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19-3801; Rev 2; 1/06
15kV ESD-Protected USB Transceivers with External/Internal Pullup Resistors
General Description
The MAX13481E/MAX13482E/MAX13483E 15kV ESDprotected USB-compliant transceivers interface lowvoltage ASICs with USB devices. The transceivers fully comply to USB 2.0 when operating at full-speed (12Mbps). The transceivers also operate with VL as low as 1.6V, ensuring compatibility with low-voltage ASICs. The MAX13481E/MAX13482E/MAX13483E feature a logic-selectable suspend mode that reduces current consumption. Integrated 15kV ESD circuitry protects D+ and D- bus connections. The MAX13481E/MAX13482E/MAX13483E operate over the extended -40C to +85C temperature range and are available in a 16-pin (3mm x 3mm) thin QFN package.
Features
Active-Low Enumeration Input Controls D+ Pullup Resistor (MAX13482E) Active-Low Enumeration Input Controls Internal Pullup Switch (MAX13481E) 15kV ESD Protection on D+ and D USB 2.0 Full-Speed Compliant Transceiver VBUS Detection (MAX13482E/MAX13483E) +1.60V to +3.6V VL Allows Connection with LowVoltage ASICs No Power-Supply Sequencing Required Pin Compatible with MIC2551A (MAX13481E) Pin Compatible with DP1680 (MAX13483E) Pin Compatible with DP1681 (MAX13481E) Pin Compatible with DP1682 (MAX13482E)
MAX13481E/MAX13482E/MAX13483E
Applications
Cell Phones PDAs Digital Still Cameras
Selector Guide
PART MAX13481EETE MAX13482EETE MAX13483EETE ENUM INPUT -- INTERNAL 1.5k RESISTOR -- -- VBUS DETECTION -- PART
Ordering Information
PIN-PACKAGE TOP MARK ADF ADI ADJ PKG CODE T1633-4 T1633-4 T1633-4
MAX13481EETE 3mm X 3mm TQFN-EP* MAX13482EETE 3mm X 3mm TQFN-EP* MAX13483EETE 3mm X 3mm TQFN-EP*
*EP = Exposed Paddle.
Typical Operating Circuits appear at end of data sheet.
Pin Configurations
VTRM VTRM
TOP VIEW
OE
D+
D+
12 VPU (VPUR) 13
11
10
9 8 N.C. SUS GND ENUM I.C. 13
12
11
10
OE 9 8 N.C. SUS GND N.C. 7 6 5 4 VM
D-
*EP
VBUS 14 VL 15 N.C. (BD) 16 1 SP (N.C.) 2 RCV 3 VP 4 VM 7 VBUS 14
*EP MAX13483E
VL 15 BD 16 1 N.C. 2 RCV 3 VP
MAX13481E MAX13482E
6 5
TQFN 3mm x 3mm
TQFN 3mm x 3mm *EXPOSED PADDLE
*EXPOSED PADDLE ( ) MAX13482E ONLY
________________________________________________________________ Maxim Integrated Products
D-
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
15kV ESD-Protected USB Transceivers with External/Internal Pullup Resistors MAX13481E/MAX13482E/MAX13483E
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND, unless otherwise noted.) VBUS, VL, ..................................................................-0.3V to +7V VTRM, VPUR, VPU .....................................-0.3V to (VBUS + 0.3V) Input Voltage (D+, D-) ..............................................-0.3V to +7V VM, VP, SUS, RCV, ENUM, BD, OE, ............-0.3V to (VL + 0.3V) Short-Circuit Current to VCC or GND (D+, D-)... ........... 150mA Maximum Continuous Current (all other pins) ..................15mA Continuous Power Dissipation (TA = +70C) 16-Pin, 3mm x 3mm TQFN (derate 15.6mW/C above +70C).......................................................................1250mW Operating Temperature Range ...........................-40C to +85C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VCC = +4V to +5.5V, VL = +1.6V to +3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V, VL = +2.5V, TA = +25C.) (Note 1)
PARAMETER SUPPLY INPUTS (VBUS, VTRM, VL) VBUS Input Range VL Input Range Regulated Supply-Voltage Output Operating VCC Supply Current VBUS VL VVTRM IVCC Full-speed transmitting/receiving at 12Mbps, CL = 50pF on D+ and D- (Note 2) Full-speed transmitting/receiving at 12Mbps, CL = 15pF receiver outputs, VL = 2.5V (Note 2) Full-speed idle, VD+ > 2.7V, VD- < 0.3V SE0: VD+ < 0.3V, VD- < 0.3V 250 250 4.0 1.6 3.0 3.3 5.5 3.6 3.6 10 V V V mA SYMBOL CONDITIONS MIN TYP MAX UNITS
Operating VL Supply Current Full-Speed Idle and SE0 Supply Current Static VL Supply Current Suspend Supply Current Disabled-Mode Supply Current Sharing-Mode VL Supply Current Disable-Mode Load Current on D+ and DSharing-Mode Load Current on D+ and DUSB Power-Supply Detection Threshold USB Power-Supply Detection Hysteresis VL Supply-Voltage Detection Threshold
IVL
2.5 350 350 5 35 20 5
mA
IVCC(IDLE)
A A A A A
IVL(STATIC) Full-speed idle, SE0 or suspend mode IVCC(SUSP) VM = VP = open, ENUM = SUS = OE = high IVCC(DIS) VL = GND or open VBUS = GND or open, OE = low, IVL(SHARING) VP = low or high, VM = low or high, SUS = high, ENUM = high IDX(DISABLE) VL = GND or open, VD_ = 0 or 5.5V IDX(SHARING) VBUS = GND or open, VD_ = 0 or 5.5V VTH_H VTH_L VHYST VTH(VL) Supply present Supply lost VL 1.7V VL < 1.7V 75 0.85 3.6
5 20
A A
0.8 0.7
V
mV V
2
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15kV ESD-Protected USB Transceivers with External/Internal Pullup Resistors
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +4V to +5.5V, VL = +1.6V to +3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V, VL = +2.5V, TA = +25C.) (Note 1)
PARAMETER SYMBOL ENUM = VL MAX13481E MAX13482 (Note 3) VIH VIL VOH VOL ILKG Measured from input to GND VDI VCM VIL VIH VHYS VOL VOH CIND ROUT RL = 1.5k from D+ or D- to 3.6V RL = 15k to GND Three-state driver D_ to GND 2.8 -1 20 2 15 8 15 2.0 250 0.3 3.6 +1 |(VD+ - VD-)| Include VDI 200 0.8 2.5 0.8 VP, VM, OE, ENUM, SUS VP, VM, OE, ENUM, SUS VP, VM, RCV, BD, ISOURCE = 2mA VP, VM, RCV, BD, ISINK = 2mA -1 10 VL - 0.4 0.4 +1 1.425 0.7 x VL 0.3 x VL CONDITIONS MIN -1 10 1.575 TYP MAX +1 UNITS A k V V V V A pF mV V V V mV V V A pF kV kV
MAX13481E/MAX13482E/MAX13483E
ANALOG VOLTAGE OUTPUTS (VPU, VPUR) Off-State Leakage ILZ VPU Switch Resistance VPUR Pullup Resistance Input-High Voltage Input-Low Voltage Output Voltage High Output Voltage Low Input Leakage Current Input Capacitance ANALOG INPUT/OUTPUTS (D+, D-) Differential Input Sensitivity Differential Common-Mode Voltage Range Single-Ended Input-Low Voltage Single-Ended Input-High Voltage Hysteresis Output Voltage Low Output Voltage High Off-State Leakage Current Transceiver Capacitance Driver Output Impedance ESD PROTECTION (D+, D-) Human Body Model IEC 61000-4-2 Contact Discharge
DIGITAL INPUTS/OUTPUTS (VP,VM, RCV, OE, ENUM, SUS, BD)
TIMING CHARACTERISTICS
(VCC = +4V to +5.5V, VL = +1.6V to +3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V, VL = +2.5V, TA = +25C.) (Note 1)
PARAMETER Rise Time D+/DFall Time D+/DRise- and Fall-Time Matching SYMBOL tFR tFF tFR/tFF CONDITIONS 10% to 90% of |VOH-VOL| (Figures 1, 9) 90% to 10% of |VOH-VOL| (Figures 1, 9) Excluding the first transition from idle state, (Figure 1) (Note 2) MIN 4 4 90 TYP MAX 20 20 110 UNITS ns ns %
DRIVER CHARACTERISTICS (CL = 50pF)
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15kV ESD-Protected USB Transceivers with External/Internal Pullup Resistors MAX13481E/MAX13482E/MAX13483E
TIMING CHARACTERISTICS (continued)
(VCC = +4V to +5.5V, VL = +1.6V to +3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V, VL = +2.5V, TA = +25C.) (Note 1)
PARAMETER Output Signal Crossover Voltage Driver Propagation Delay Driver-Enabled Delay Time Driver Disabled Delay RECEIVER (CL = 15pF) Differential Receiver Propagation Delay Single-Ended Receiver Propagation Delay Single-Ended Receiver Disable Delay Single-Ended Receiver Enable Delay tPLH_RCV tPHL_RCV tPLH_SE tPHL_SE tPHZ_SE tPLZ_SE tPZH_SE tPZL_SE Low-to-high transition (Figures 4, 9) High-to-low transition (Figures 4, 9) Low-to-high transition (Figures 4, 9) High-to-low transition (Figures 4, 9) High-to-off transition (Figure 5) Off-to-low transition (Figure 5) Off-to-high transition (Figure 5) Off-to-low transition (Figure 5) 20 20 12 12 15 15 15 15 ns ns ns ns SYMBOL VCRS tPLH_DRV tPHL_DRV tPZH_DRV tPZL_DRV tPHZ_DRV tPLZ_DRV CONDITIONS (Figure 2) (Note 2) Low-to-high transition (Figure 2) High-to-low transition (Figure 2) Off-to-high transition (Figures 3, 10) Off-to-low transition (Figures 3, 10) High-to-off transition (Figures 3, 10) Low-to-off transition (Figures 3, 10) MIN 1.3 TYP MAX 2 18 18 20 20 20 20 UNITS V ns ns ns ns ns ns
Note 1: Parameters are 100% production tested at +25C, unless otherwise noted. Limits over temperature are guaranteed by design. Note 2: Guaranteed by design, not production tested. Note 3: Including external 27 series resistor.
Typical Operating Characteristics
(VBUS = 5V, VL = +3.3V, TA = +25C, unless otherwise noted.)
DIFFERENTIAL RECEIVER PROPAGATION DELAY vs. VL
MAX13481E toc01
DIFFERENTIAL RECEIVER PROPAGATION DELAY vs. TEMPERATURE
MAX13481E toc02
SINGLE-ENDED RECEIVER PROPAGATION DELAY vs. VL
6 PROPAGATION DELAY (ns) 5 4 3 2 1 0 TA = +25C TA = -40C TA = +85C
MAX13481 toc03
14.0 13.5 PROPAGATION DELAY (ns) 13.0 12.5 12.0 11.5 11.0 10.5 10.0 1.6 2.0 2.4 VL (V) 2.8 3.2 TA = -40C TA = +25C TA = +85C
16 15 14 PROPAGATION DELAY (ns) 13 12 11 10 9 8 7 6
7
3.6
-40
-15
10 35 TEMPERATURE (C)
60
85
1.6
2.0
2.4 VL (V)
2.8
3.2
3.6
4
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15kV ESD-Protected USB Transceivers with External/Internal Pullup Resistors MAX13481E/MAX13482E/MAX13483E
Typical Operating Characteristics (continued)
(VBUS = 5V, VL = +3.3V, TA = +25C, unless otherwise noted.)
SINGLE-ENDED RECEIVER PROPAGATION DELAY vs. TEMPERATURE
MAX13481E toc04
TRANSMITTER SKEW vs. TEMPERATURE
1.8 1.6 TRANSMITTER SKEW (ns) 1.4 1.2 1.0 0.8 0.6 0.4 0.2
MAX13481E toc05
VL SUSPEND CURRENT vs. TEMPERATURE
MAX13481E toc06
5
2.0
100
VL SUSPEND CURRENT (A)
4 PROPAGATION DELAY (ns)
10
3
1
2
1
0.1
0 -40 -15 10 35 TEMPERATURE (C) 60 85
0 -40 -15 10 35 TEMPERATURE (C) 60 85
0.01 -40 -15 10 35 60 85 TEMPERATURE (C)
VBUS SUSPEND CURRENT vs. VBUS
MAX13481E toc07
VBUS SUPPLY CURRENT vs. D+/D- CAPACITANCE
MAX13481E toc08
VL SUPPLY CURRENT vs. D+/D- CAPACITANCE
1.45 VBUS SUPPLY CURRENT (mA) 1.40 1.35 1.30 1.25 1.20 1.15 1.10 1.05 1.00 VL = 1.8V VL = 2.5V
MAX13481E toc09
20 19 VBUS SUPPLY CURRENT (A) 18 17 16 15 14 13 4.0 4.3 4.6 4.9 VBUS (V) 5.2 TA = -40C TA = +25C
18 16 VBUS SUPPLY CURRENT (mA) 14 12 10 8 6 4 2 0
1.50
TA = +85C
5.5
0 10 20 30 40 50 60 70 80 90 100 CAPACITANCE (pF)
0 10 20 30 40 50 60 70 80 90 100 CAPACITANCE (pF)
TRANSMIT MODE (OE = LOW)
MAX13481E toc10
RECEIVE MODE (OE = HIGH)
MAX13481E toc11
SUSPEND MODE
MAX13481E toc12
VP 1V/div
D+ 1V/div
SUS 2V/div
D+ VM D+ RCV 1V/div D2V/div D-
1V/div D10ns/div 10ns/div
RCV 2V/div 20ns/div
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15kV ESD-Protected USB Transceivers with External/Internal Pullup Resistors MAX13481E/MAX13482E/MAX13483E
Typical Operating Characteristics (continued)
(VBUS = 5V, VL = +3.3V, TA = +25C, unless otherwise noted.)
TRANSMISSION IN SUSPEND MODE
MAX13481E toc13
BUS DETECT RESPONSE
MAX13481E toc14
D+ 1V/div DVP 1V/div BD 1V/div VBUS 2V/div
VM 20ns/div 1s/div
OE, VP, VM TIMING
MAX13481E toc15
EYE DIAGRAM
4 OE 2V/div D+ AND D- (V) VP 2V/div 3 2 1 0 -1
MAX13481E toc16
VM 2V/div
20ns/div
0
10
20
30
40
50
60
70
80
TIME (ns)
Pin Description
PIN MAX13481E MAX13482E MAX13483E NAME FUNCTION
8, 16 1 2 3
1, 8 -- 2 3
1, 5, 8 -- 2 3
N.C. SP RCV VP
No Connection. Not internally connected. Connect to VL for Pin Compatibility to the MIC2551A or Leave Floating. Not internally connected. Differential Receiver Output. RCV responds to the differential input on D+ and D-. RCV asserts low when SUS = VL. Receiver Output/Driver Input. VP functions as a receiver output when OE = VL. VP duplicates D+ when receiving. VP functions as a driver input when OE = GND.
6
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15kV ESD-Protected USB Transceivers with External/Internal Pullup Resistors
Pin Description (continued)
PIN 4 5 6 7 4 5 6 7 4 -- 6 7 NAME VM ENUM GND SUS FUNCTION Receiver Output/Driver Input. VM functions as a receiver output when OE = VL. VM duplicates D- when receiving. VM functions as a driver input when OE = GND. Active-Low Enumerator-Function-Selection Input. ENUM controls the pullup resistor or switch connection. See the ENUM section. Ground Suspend Input. Drive SUS low for normal operation. Drive SUS high for low-power state. RCV asserts low and D+/ D- are high impedance in suspend mode. VP and VM remain active in suspend mode. Output Enable. Drive OE to GND to enable the D+/D- transmitter outputs. Drive OE to VL to disable the transmitter outputs. OE also controls the I/O directions of VP and VM (see Tables 3 and 4). USB Input/Output. For OE = GND, D- functions as a USB output with VM providing the input signal. For OE = VL, D- functions as a USB input with VM functioning as a single-ended receiver output. USB Input/Output. For OE = GND, D+ functions as a USB output with VP providing the input signal. For OE = VL, D+ functions as a USB input with VP functioning as a singleended receiver output. Regulated Output Voltage. VTRM provides a 3.3V output derived from VBUS. Bypass VTRM to GND with a 1F (min) low-ESR capacitor such as ceramic or plastic film types. VTRM provides power to internal circuitry, the internal D+ pullup resistor, VPU and VPUR. Do not use VTRM to power external circuitry. Pullup Voltage. For ENUM = GND, VPU is pulled to an internal 3.3V voltage. Connect a 1.5k resistor between D+ and VPU for full-speed operation. For ENUM = VL, VPU is high impedance. Internally Connected. Leave open. Do not connect to external circuitry. Internal Pullup Resistor. VPUR is pulled to an internal 3.3V voltage through a 1.5k resistor (ENUM = GND). Connect VPUR to D+ for full-speed operation. For ENUM = VL, VPU is high impedance. USB-Side Power-Supply Input. Connect a +4V to +5.5V power supply to VBUS. VBUS supplies power to the internal regulator. Bypass VBUS to GND with a 1F ceramic capacitor. Connect VBUS and VTRM together when powering the MAX13481E/MAX13482E/ MAX13483E with an external power supply. Digital Input/Output Connection Logic Supply. Connect a +1.6V to +3.6V supply to VL. Bypass VL to GND with a 0.1F (min) low-ESR ceramic capacitor. USB Detector Output (Push/Pull). A high at BD signals to the ASIC that VBUS is present. Exposed Paddle. Connect EP to GND.
MAX13481E/MAX13482E/MAX13483E
9
9
9
OE
10
10
10
D-
11
11
11
D+
12
12
12
VTRM
13 -- --
-- -- 13
-- 13 --
VPU I.C. VPUR
14
14
14
VBUS
15 -- EP
15 16 EP
15 16 EP
VL BD EP
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15kV ESD-Protected USB Transceivers with External/Internal Pullup Resistors MAX13481E/MAX13482E/MAX13483E
Detailed Description
The MAX13481E/MAX13482E/MAX13483E 15kV ESDprotected USB-compliant transceivers convert singleended or differential logic-level signals to USB signals, and USB signals to single-ended or differential logic signals. These devices fully comply to USB 2.0 when operating at full-speed (12Mbps), and operate with VL as low as 1.6V, ensuring compatibility with low-voltage ASICs. Integrated 15kV ESD-circuitry protection protects D+ and D- bus connections. The MAX13481E/MAX13483E require an external 1.5k pullup resistor to VTRM for full-speed operation. The MAX13481E requires an external 1.5k pullup resistor and feature an active-low enumeration function that connects a +3.3V voltage at VPU. The MAX13482E features an active-low enumeration function that connects a 1.5k pullup resistor at VPUR for full-speed operation. The MAX13482E/MAX13483E also provide a bus detect (BD) output that asserts high when VBUS > 3.6V.
Applications Information
Power-Supply Configurations
Normal Operating Mode Connect VL and VBUS to system power supplies (Table 1). Connect VL to a +1.6V to +3.6V supply. Connect VBUS to a +4.0V to +5.5V supply or to the VBUS connector. Alternatively, these parts can derive power from a single Li+ cell. Connect the battery to VBUS. VTRM remains above +3.0V for VBUS as low as +3.1V. Additionally, the devices can be powered by an external +3.3V 10% voltage regulator. Connect VBUS and VTRM to an external +3.3V voltage regulator. VBUS no longer consumes current to power the internal linear regulator in this configuration. The bus detect function (BD) on the MAX13482E and MAX13483E does not function when the device is powered this way. Disable Mode Connect VBUS to a system power supply and leave VL unconnected or connect to GND. D+ and D- enter a tristate mode and VBUS (or VBUS and VTRM) consumes less than 20A of supply current. D+ and D- withstand external signals up to +5.5V in disable mode (Table 2).
Table 1. Power-Supply Configuration
VBUS (V) +4.0 to +5.5 +4.0 to +5.5 GND or floating +3.1 to +4.5 +3.0 to +3.6 VTRM (V) +3.0 to +3.6 output +3.0 to +3.6 output High Z +3.0 to +3.6 output +3.0 to +3.6 input VL (V) +1.6 to +3.6 GND or floating +1.6 to +3.6 +1.6 to +3.6 +1.6 to +3.6 CONFIGURATION Normal mode Disable mode Sharing mode Battery supply Voltage regulator supply NOTES -- Table 2 Table 2 --
Table 2. Disable-Mode and Sharing-Mode Connection
INPUTS/OUTPUTS VBUS / VTRM VL D+ and DVP and VM RCV BD (MAX13482E/MAX13483E) DISABLE MODE 4V to 5.5V Floating or connected to GND High impedance Invalid* Invalid* Invalid* SHARING MODE Floating or connected to GND 1.6V to 3.6V input High impedance For OE = low, high impedance For OE = high, output logic high Undefined Low
*High impedance or logic low
8
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15kV ESD-Protected USB Transceivers with External/Internal Pullup Resistors
Sharing Mode Connect VL to a system power supply and leave VBUS (or VBUS and VTRM) unconnected or connect to GND. D+ and D- enter a tri-state mode, allowing other circuitry to share the USB D+ and D- lines. VL consumes less than 20A of supply current. D+ and D- withstand external signals up to +5.5V in sharing mode (Table 2).
MAX13481E/MAX13482E/MAX13483E
Table 3. Transmit Truth Table (OE = 0)
INPUTS VP 0 0 1 1 VM 0 1 0 1 D+ 0 0 1 1 OUTPUTS D0 1 0 1
Device Control OE
OE controls the direction of communication. Drive OE low to transfer data from the logic side to the USB side. For OE = low, VP and VM serve as differential driver inputs to the USB transmitter. Drive OE high to transfer data from the USB side to the logic side. For OE = high, VP and VM serve as single-ended receiver outputs from the USB inputs (D+ and D-). RCV serves as a differential receiver output, regardless of the state of OE.
Table 4a. Receive Truth Table (OE = 1)
INPUTS D+ 0 0 1 1 D0 1 0 1 VP 0 0 1 1 OUTPUTS VM 0 1 0 1 RCV RCV* 0 1 X
ENUM (MAX13481E/MAX13482E) The MAX13481E/MAX13482E feature an active-low enumerate function that allows software control of the 1.5k pullup resistor and switch to D+ for full-speed operation. For the MAX13481E, connect a 1.5k pullup resistor between D+ and VPU. The MAX13481E provides an internal switch that pulls VPU to a +3.3V voltage. Drive ENUM high to disconnect VPU from voltage. Drive ENUM low to connect VPU and the external pullup resistor to the +3.3V voltage. The MAX13482E has an internal 1.5k resistor that connects at VPUR. Connect VPUR directly to D+. Drive ENUM high to disconnect the internal pullup resistor at VPUR. Drive ENUM low to connect the internal pullup resistor to VPUR.
SUS The SUS state determines whether the MAX13481E/ MAX13482E/MAX13483E operate in normal mode or in suspend mode. Connect SUS to GND to enable normal operation. Drive SUS high to enable suspend mode. RCV asserts low and VP and VM remain active in suspend mode (Tables 3 and 4). In suspend mode, supply current is reduced.
* = Last state X = Undefined
Table 4b. Receive Truth Table (OE = 1, SUS = 1)
INPUTS D+ 0 0 1 1 D0 1 0 1 VP 0 0 1 1 OUTPUTS VM 0 1 0 1 RCV 0 0 0 0
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15kV ESD-Protected USB Transceivers with External/Internal Pullup Resistors MAX13481E/MAX13482E/MAX13483E
VTRM An internal linear regulator generates the VTRM voltage (+3.3V, typ). VTRM derives power from VBUS (see the Power-Supply Configurations section). VTRM powers the internal portions of the USB circuitry and provides the pullup voltage for the MAX13481E/MAX13482E. Bypass VTRM to GND with a 1F ceramic capacitor as close to the device as possible. Do not use VTRM to provide power to any other external circuitry. D+ and DD+ and D- serve as bidirectional bus connections and are ESD-protected to 15kV (Human Body Model). For OE = low, D+ and D- serve as transmitter outputs. For OE = high, D+ and D- serve as receiver inputs. BD (MAX13482E/MAX13483E) The push-pull bus detect (BD) output monitors VBUS and asserts high if V BUS is greater than V TH_H. BD asserts low if V BUS is less than V TH_L , and the MAX13482E/MAX13483E enter sharing mode (Table 2). VBUS For most applications, VBUS connects to the VBUS terminal on the USB connector (see the Power-Supply Configurations section). VBUS can also connect to an external supply. Drive V BUS low to enable sharing mode. Bypass VBUS to GND with a 1F ceramic capacitor as close to the device as possible.
Data Transfer
Transmitting Data to the USB To transmit data to the USB, drive OE low. The MAX13481E/MAX13482E/MAX13483E transmit data to the USB differentially on D+ and D-. VP and VM serve as input signals to the differential driver and are also used to assert a single-ended zero (SE0) driver (see Table 3). Receiving Data from the USB To receive data from the USB, drive OE high and SUS low. Differential data received by D+ and D- appears at RCV. Single-ended receivers on D+ and D- drive VP and VM, respectively.
RCV
RCV monitors D+ and D- when receiving data. RCV is a logic 1 for D+ high and D- low. RCV is a logic 0 for D+ low and D- high. RCV retains its last valid state when D+ and D- are both low (single-ended zero, or SE0).
ESD Protection
D+ and D- possess extra protection against static electricity to protect the devices up to 15kV. The ESD structures withstand high ESD in all operating modes: normal operation, suspend mode, and powered down. D+ and D- provide protection to the following limits: * 15kV using the Human Body Model * 8kV using the Contact Discharge method specified in IEC 61000-4-2 * To protect VBUS from 15kV ESD, a 1F or greater capacitor must be connected from VBUS to GND.
External Components
External Capacitors The MAX13481E/MAX13482E/MAX13483E require three external capacitors for proper operation. Bypass VL to GND with a 0.1F ceramic capacitor. Bypass VBUS to GND with a 1F ceramic capacitor. Bypass V TRM to GND with a 1F (min) ceramic capacitor. Install all capacitors as close to the device as possible. External Resistor Proper USB operation requires two external resistors, each 27 1%. Install one resistor in series between D+ of the MAX13481E/MAX13482E/MAX13483E and D+ on the USB connector. Install the other resistor in series between D- of the MAX13481E/MAX13482E/MAX13483E and D- on the USB connector (see the Typical Operating Circuits). The MAX13483E requires an external 1.5k pullup resistor between VTRM and D+ for full-speed operation. The MAX13481E requires an external 1.5k pullup resistor between VPU and D+ for full-speed operation. The MAX13482E does not require an external pullup resistor but VPUR must be connected to D+ for full-speed operation.
ESD Test Conditions
ESD performance depends on a variety of conditions. Contact Maxim for a reliability report that documents test setup, test methodology, and test results.
Human Body Model
Figure 6 shows the Human Body Model and Figure 7 shows the current waveform generated when discharged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of interest, which then discharges into the test device through a 1.5k resistor.
IEC 61000-4-2
The IEC 61000-4-2 standard covers ESD testing and performance of finished equipment. It does not specifically refer to integrated circuits. The major difference between tests done using the Human Body Model and IEC 61000-4-2 is a higher peak current in IEC 61000-42, due to lower series resistance. Hence, the ESD with-
10
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15kV ESD-Protected USB Transceivers with External/Internal Pullup Resistors MAX13481E/MAX13482E/MAX13483E
Timing Diagrams
tFR, tLR VOHD 90% 90% tFF, tLF
OE 10% VOLD VP/VM CONNECTED TO GND, D+/D- CONNECTED TO PULLUP 10%
Figure 1. Rise and Fall Times
D+/D-
tPLZ_DRV
tPZL_DRV
VM
VP AND VM RISE/FALL TIMES < 4ns OE VP/VM CONNECTED TO VL, D+/D- CONNECTED TO PULLDOWN
VP tPLH_DRV tPHL_DRV D+/D-
D-
tPHZ_DRV VCRS_F , VCRS_L
tPZH_DRV
D+
Figure 2. Timing of VP and VM to D+ and D-
Figure 3. Driver's Enable and Disable Timing
stand voltage measured to IEC 61000-4-2 generally is lower than that measured using the Human Body Model. Figure 8 shows the IEC 61000-4-2 model. The Contact Discharge method connects the probe to the device before the probe is charged.
Machine Model
The Machine Model for ESD tests all connections using a 200pF storage capacitor and zero discharge resis-
tance. Its objective is to emulate the stress caused by contact that occurs with handling and assembly during manufacturing. All pins require this protection during manufacturing, not just inputs and outputs. After PC board assembly, the Machine Model is less relevant to I/O ports.
______________________________________________________________________________________
11
15kV ESD-Protected USB Transceivers with External/Internal Pullup Resistors MAX13481E/MAX13482E/MAX13483E
Timing Diagrams (continued)
RC 1M
+3V INPUT RISE/FALL TIME < 4ns
RD 1.5k DISCHARGE RESISTANCE DEVICE UNDER TEST
CHARGE-CURRENTLIMIT RESISTOR
D+/D0V
HIGHVOLTAGE DC SOURCE
Cs 100pF
STORAGE CAPACITOR
VL tPLH_RCV, tPLH_SE tPHL_RCV, tPHL_SE
Figure 6. Human Body ESD Test Model
RCV, VM, AND VP
IP 100% 90%
Ir
PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE)
Figure 4. D+/D- Timing to VP, VM, and RCV
AMPERES 36.8% 10% 0
OE
0
tRL
D+/D- CONNECTED TO GND, VP/VM CONNECTED TO PULLUP VP/VM
TIME tDL CURRENT WAVEFORM
Figure 7. Human Body Model Current Waveform
tPLZ_SE
tPZL_SE
RC 50 to 100
OE D+/D- CONNECTED TO +3V, VP/VM CONNECTED TO PULLDOWN
RD 330 DISCHARGE RESISTANCE DEVICE UNDER TEST
CHARGE-CURRENTLIMIT RESISTOR HIGHVOLTAGE DC SOURCE
VP/VM
Cs 150pF
STORAGE CAPACITOR
tPHZ_SE
tPZH_SE
Figure 5. Receiver's Enable and Disable Timing
Figure 8. IEC 61000-4-2 ESD Test Model
12
______________________________________________________________________________________
15kV ESD-Protected USB Transceivers with External/Internal Pullup Resistors MAX13481E/MAX13482E/MAX13483E
Test Circuits
TEST POINT TEST MAX13481E POINT MAX13482E MAX13483E RCV, VM, AND VP (a) LOAD FOR RCV, VM, AND VP CL 27 DUT D+/DCL + 220
Figure 10. Driver's Enable and Disable Timing MAX13481E MAX13482E MAX13483E
D+ AND DCL (b) LOAD FOR D+/D15k TEST POINT
27
Figure 9. Transmitter and Receiver Propagation Delay
______________________________________________________________________________________
13
15kV ESD-Protected USB Transceivers with External/Internal Pullup Resistors MAX13481E/MAX13482E/MAX13483E
Functional Diagrams
MAX13481E
VL
TO INTERNAL CIRCUITRY LDO REGULATOR VBUS
SUS VTRM VPU ENUM
VP VM OE
D+ LEVEL TRANSLATOR AND LOGIC D-
RCV
GND
14
______________________________________________________________________________________
15kV ESD-Protected USB Transceivers with External/Internal Pullup Resistors MAX13481E/MAX13482E/MAX13483E
Functional Diagrams (continued)
MAX13482E
BD VTH_VBUS TO INTERNAL CIRCUITRY LDO REGULATOR VBUS
VL
SUS
VTRM VPUR
ENUM
VP VM OE
D+ LEVEL TRANSLATOR AND LOGIC D-
RCV
GND
______________________________________________________________________________________
15
15kV ESD-Protected USB Transceivers with External/Internal Pullup Resistors MAX13481E/MAX13482E/MAX13483E
Functional Diagrams (continued)
MAX13483E
BD VTH TO INTERNAL CIRCUITRY LDO REGULATOR VBUS
VL
SUS VTRM
VP VM OE LEVEL TRANSLATOR AND LOGIC
D+ D-
RCV
GND
16
______________________________________________________________________________________
15kV ESD-Protected USB Transceivers with External/Internal Pullup Resistors
Typical Operating Circuits
SYSTEM SUPPLY VOLTAGE VL 0.1F VBUS VPU SP SYSTEM INTERFACE VM VP OE ENUM SUS
MAX13481E/MAX13482E/MAX13483E
1F PC USB POWER
MAX13481E
D+
1.5k 27 1% D+ 27 1% DGND VTRM 1F DGND
SYSTEM SUPPLY VOLTAGE VL 0.1F VBUS
1F PC USB POWER
MAX13482E
VPUR BD SYSTEM INTERFACE VM VP OE ENUM SUS D+ 27 1% DGND VTRM 1F DGND 27 1% D+
______________________________________________________________________________________
17
15kV ESD-Protected USB Transceivers with External/Internal Pullup Resistors MAX13481E/MAX13482E/MAX13483E
Typical Operating Circuits (continued)
SYSTEM SUPPLY VOLTAGE VL 0.1F VBUS VTRM 1F BD SYSTEM INTERFACE VM VP OE ENUM SUS
1F PC USB POWER
MAX13483E
D+
1.5k 27 1% D+ 27 1% DGND DGND
Chip Information
PROCESS: BiCMOS
18
______________________________________________________________________________________
15kV ESD-Protected USB Transceivers with External/Internal Pullup Resistors
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.)
12x16L QFN THIN.EPS
MAX13481E/MAX13482E/MAX13483E
MARKING
E E/2
(ND - 1) X e
(NE - 1) X e
D2/2
D/2 D
AAAA
C L
e D2
k
b E2/2
0.10 M C A B
C L
L
E2
C L
0.10 C 0.08 C A A2 A1 L
C L
L
e
e
PACKAGE OUTLINE 12, 16L THIN QFN, 3x3x0.8mm
21-0136
F
1 2
PKG REF. A b D E e L N ND NE A1 A2 k 0.25 0 MIN. 0.70 0.20 2.90 2.90 0.45
12L 3x3 NOM. 0.75 0.25 3.00 3.00 0.50 BSC. 0.55 12 3 3 0.02 0.20 REF 0.05 0 0.25 0.65 0.30 MAX. 0.80 0.30 3.10 3.10 MIN. 0.70 0.20 2.90 2.90
16L 3x3 NOM. 0.75 0.25 3.00 3.00 0.50 BSC. 0.40 16 4 4 0.02 0.20 REF 0.05 0.50 MAX. 0.80 0.30 3.10 3.10 PKG. CODES T1233-1 T1233-3 T1233-4 T1633-1 T1633-2 T1633F-3 T1633FH-3 T1633-4
EXPOSED PAD VARIATIONS
D2 MIN. 0.95 0.95 0.95 0.95 0.95 0.65 0.65 0.95 NOM. 1.10 1.10 1.10 1.10 1.10 0.80 0.80 1.10 MAX. 1.25 1.25 1.25 1.25 1.25 0.95 0.95 1.25 MIN. 0.95 0.95 0.95 0.95 0.95 0.65 0.65 0.95 E2 NOM. MAX. 1.10 1.10 1.10 1.10 1.10 0.80 0.80 1.10 1.25 1.25 1.25 1.25 1.25 0.95 0.95 1.25 PIN ID 0.35 x 45 0.35 x 45 0.35 x 45 0.35 x 45 0.35 x 45 0.225 x 45 0.225 x 45 0.35 x 45 JEDEC WEED-1 WEED-1 WEED-1 WEED-2 WEED-2 WEED-2 WEED-2 WEED-2
DOWN BONDS ALLOWED
NO YES YES NO YES N/A N/A NO
NOTES: 1. DIMENSIONING & TOLERANCING CONFORM TO ASME Y14.5M-1994. 2. ALL DIMENSIONS ARE IN MILLIMETERS. ANGLES ARE IN DEGREES. 3. N IS THE TOTAL NUMBER OF TERMINALS. 4. THE TERMINAL #1 IDENTIFIER AND TERMINAL NUMBERING CONVENTION SHALL CONFORM TO JESD 95-1 SPP-012. DETAILS OF TERMINAL #1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED WITHIN THE ZONE INDICATED. THE TERMINAL #1 IDENTIFIER MAY BE EITHER A MOLD OR MARKED FEATURE. 5. DIMENSION b APPLIES TO METALLIZED TERMINAL AND IS MEASURED BETWEEN 0.20 mm AND 0.25 mm FROM TERMINAL TIP. 6. ND AND NE REFER TO THE NUMBER OF TERMINALS ON EACH D AND E SIDE RESPECTIVELY. 7. DEPOPULATION IS POSSIBLE IN A SYMMETRICAL FASHION. 8. COPLANARITY APPLIES TO THE EXPOSED HEAT SINK SLUG AS WELL AS THE TERMINALS. 9. DRAWING CONFORMS TO JEDEC MO220 REVISION C. 10. MARKING IS FOR PACKAGE ORIENTATION REFERENCE ONLY 11. NUMBER OF LEADS SHOWN ARE FOR REFERENCE ONLY PACKAGE OUTLINE 12, 16L THIN QFN, 3x3x0.8
21-0136
F
2 2
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 19 (c) 2006 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc.

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