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19-1779; Rev 2; 10/02
15kV ESD-Protected, 10Mbps, 3V/5V, Low-Power Quad RS-422/RS-485 Receivers
________________General Description
The MAX3093E/MAX3094E are rugged, low-power, quad, RS-422/RS-485 receivers featuring electrostatic discharge (ESD) protection for use in harsh environments. All receiver inputs are protected to 15kV using IEC 1000-4-2 Air-Gap Discharge, 8kV using IEC 10004-2 Contact Discharge, and 15kV using the Human Body Model. The MAX3093E operates from a +5V supply, while the MAX3094E operates from a +3.3V supply. Receiver propagation delays are guaranteed to within 8ns of a predetermined value, thereby ensuring device-to-device matching across production lots. The devices feature a 1nA low-power shutdown mode in which the receiver outputs are high impedance. When active, these receivers have a fail-safe feature that guarantees a logic-high output if the input is open circuit. They also have a quarter-unit-load input impedance that allows 128 receivers on a bus. The MAX3093E/MAX3094E are pin-compatible, lowpower upgrades to the industry-standard '34C86. They are available in space-saving TSSOP, narrow SO, and PDIP packages.
____________________________Features
o ESD Protection 15kV--IEC 1000-4-2 Air-Gap Discharge 8kV--IEC 1000-4-2 Contact Discharge 15kV--Human Body Model o Guaranteed Propagation-Delay Tolerance Between All ICs 8ns (MAX3093E) 10ns (MAX3094E) o Single +3V Operation (MAX3094E) Single +5V Operation (MAX3093E) o 16-Pin TSSOP o 10Mbps Data Rate o Allow up to 128 Receivers on the Bus o 1nA Low-Power Shutdown Mode o 2.4mA Operating Supply Current o Pin-Compatible Upgrades to '34C86
MAX3093E/MAX3094E
_______________Ordering Information
PART MAX3093ECUE MAX3093ECSE MAX3093ECPE MAX3093EEUE MAX3093EESE MAX3093EEPE MAX3094ECUE MAX3094ECSE MAX3094ECPE MAX3094EEUE MAX3094EESE MAX3094EEPE TEMP RANGE 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C PIN-PACKAGE 16 TSSOP 16 Narrow SO 16 Plastic DIP 16 TSSOP 16 Narrow SO 16 Plastic DIP 16 TSSOP 16 Narrow SO 16 Plastic DIP 16 TSSOP 16 Narrow SO 16 Plastic DIP
________________________Applications
Telecommunications Equipment Rugged RS-422/RS-485/RS-423 Bus Receiver Receivers for ESD-Sensitive Applications Level Translators
________________Functional Diagram
VCC
ENBD ENAC A+ A AB+ B BC+ C CD+ D DGND
MAX3093E MAX3094E
YA
Pin Configuration
TOP VIEW
A- 1 A YB A+ 2 YA 3 ENAC 4 YC C YD YC 5 C+ 6 C- 7 GND 8 16 VCC 15 B14 B+ B
MAX3093E MAX3094E
13 YB 12 ENBD 11 YD 10 D+ 9 DD
TSSOP/SO/DIP 1
________________________________________________________________ Maxim Integrated Products
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, 10Mbps, 3V/5V, Low-Power Quad RS-422/RS-485 Receivers MAX3093E/MAX3094E
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC).............................................................+7V Control Input Voltage (ENAC, ENBD).........-0.3V to (VCC + 0.3V) Receiver Input Voltage (_+, _-)............................................25V Receiver Output Voltage (Y_).....................-0.3V to (VCC + 0.3V) Output Short-Circuit Duration (Y_, one output) ..........Continuous Continuous Power Dissipation (TA = +70C) TSSOP (derate 9.4mW/C above +70C) ....................755mW SO (derate 8.7mW/C above +70C) ...........................696mW Plastic DIP (derate 10.5mW/C above +70C) ............762mW Operating Temperature Ranges MAX309_EC_ _ ..................................................0C to +70C MAX309_EE_ _ ...............................................-40C to +85C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +160C 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.
DC ELECTRICAL CHARACTERISTICS--MAX3093E
(VCC = +5V 5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5.0V, TA = +25C.) (Note 1) PARAMETER Receiver Differential Input Threshold Receiver Input Hysteresis Receiver Input Current (_+, _-) Enable Input Current (ENAC/ENBD) Enable Input High Voltage (ENAC/ENBD) Enable Input Low Voltage (ENAC/ENBD) Receiver Output High Voltage Receiver Output Low Voltage Three-State Current at Receiver Output Output Short-Circuit Current Receiver Input Resistance Supply Current ESD Protection (Note 2) VIH VIL VOH VOL IOZR IOSR RIN ICC IOUT = -4mA, VID = 200mV, output enabled, Figure 1 IOUT = 4mA, VID = -200mV, output enabled, Figure 1 0 VOUT VCC, output disabled 0 VOUT VCC, output enabled -7V VCM 12V No load, output enabled Output disabled Human Body Model IE C1000-4-2 Air-Gap Discharge IE C1000-4-2 Contact Discharge 7 48 2.4 0.001 15 15 8 kV 3.5 10 VCC - 1.5 0.4 1 75 2.0 0.8 IIN SYMBOL VTH CONDITIONS -7V VCM 12V VCM = 0 VCC = 0 or 5.25V VIN = 12V VIN = -7V MIN -200 45 250 -200 1 TYP MAX 200 UNITS mV mV A A V V V V A mA k mA A
2
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15kV ESD-Protected, 10Mbps, 3V/5V, Low-Power Quad RS-422/RS-485 Receivers
SWITCHING CHARACTERISTICS--MAX3093E
(VCC = +5V 5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5.0V, TA = +25C.) PARAMETER SYMBOL CONDITIONS VCC = +5V 5%, TA = TMIN to TMAX TA = +85C VCC = 5.25V Input-to-Output Propagation Delay tPLH, tPHL TA = +70C TA = +25C TA = -40C TA = +85C VCC = 4.75V TA = +70C TA = +25C TA = -40C Device-to-Device PropagationDelay Matching Propagation-Delay Skew (tPLH - tPHL) Output Enable Time to Low Level Output Enable Time to High Level Output Disable Time from Low Level Output Disable Time from High Level Maximum Data Rate tSK tZL tZH tLZ tHZ fMAX MIN 65 78 76 71 65 82 80 74 68 82 76 79 73 90 86 TYP MAX 98 94 92 87 81 98 96 90 84 16 -2 600 600 60 60 10 10 800 800 100 100 ns ns ns ns ns ns Mbps ns UNITS
MAX3093E/MAX3094E
|VID| = 3V,
Figure 2
|VID| = 3V, Figure 2, matched conditions
Figure 2 Figure 3 Figure 3 Figure 3 Figure 3
DC ELECTRICAL CHARACTERISTICS--MAX3094E
(VCC = +3.0V to +3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +3.3V, TA = +25C.) (Note 1) PARAMETER Receiver Differential Input Threshold Receiver Input Hysteresis Receiver Input Current (_+, _-) Enable Input Current (ENAC/ENBD) Enable Input High Voltage (ENAC/ENBD) Enable Input Low Voltage (ENAC/ENBD) Receiver Output High Voltage VIH VIL VOH IOUT = -1.5mA, VID = 200mV, output enabled, Figure 1 VCC - 0.4 2.0 0.8 IIN SYMBOL VTH CONDITIONS -7V VCM 12V VCM = 0 VCC = 0 or 3.6V VIN = 12V VIN = -7V MIN -200 45 250 -200 1 TYP MAX 200 UNITS mV mV A A V V V
_______________________________________________________________________________________
3
15kV ESD-Protected, 10Mbps, 3V/5V, Low-Power Quad RS-422/RS-485 Receivers MAX3093E/MAX3094E
DC ELECTRICAL CHARACTERISTICS--MAX3094E (continued)
(VCC = +3.0V to +3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +3.3V, TA = +25C.) (Note 1) PARAMETER Receiver Output Low Voltage Three-State Current at Receiver Output Output Short-Circuit Current Receiver Input Resistance Supply Current ESD Protection (Note 2) SYMBOL VOL IOZR IOSR RIN ICC CONDITIONS IOUT = 2.5mA, VID = -200mV, output enabled, Figure 1 0 VOUT VCC, output disabled 0 VOUT VCC, output enabled -7V VCM 12V No load, outputs enabled Outputs disabled Human Body Model IEC 1000-4-2 Air-Gap Discharge IEC 1000-4-2 Contact Discharge 4 48 2.4 0.001 15 15 8 kV 4.0 10 MIN TYP MAX 0.4 1 60 UNITS V A mA k mA A
SWITCHING CHARACTERISTICS--MAX3094E
(VCC = +3.0V to +3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +3.3V, TA = +25C.) PARAMETER SYMBOL CONDITIONS VCC = +3.3V 5%, TA = TMIN to TMAX TA = +85C VCC = 3.60V Input-to-Output Propagation Delay tPLH, tPHL TA = +70C TA = +25C TA = -40C TA = +85C VCC = 3.00V TA = +70C TA = +25C TA = -40C Device-to-Device PropagationDelay Matching Propagation-Delay Skew (tPLH - tPHL) Output Enable Time to Low Level Output Enable Time to High Level Output Disable Time from Low Level Output Disable Time from High Level Maximum Data Rate tSK tZL tZH tLZ tHZ fMAX MIN 69 88 86 78 69 103 100 91 82 101 92 88 79 113 98 TYP MAX 123 108 106 98 89 123 120 111 102 20 -1 600 600 80 80 10 10 1000 1000 180 180 ns ns ns ns ns ns Mbps ns UNITS
|VID| = 3V,
Figure 2
|VID| = 3V, Figure 2, matched conditions
Figure 2 Figure 3 Figure 3 Figure 3 Figure 3
Note 1: All currents into the device are positive; all currents out of the device are negative. All voltages are referred to device ground, unless otherwise noted. Note 2: Receiver inputs (_+, _-). 4 _______________________________________________________________________________________
15kV ESD-Protected, 10Mbps, 3V/5V, Low-Power Quad RS-422/RS-485 Receivers
Typical Operating Characteristics
(VCC = +5V for MAX3093E, VCC = +3.3V for MAX3094E, TA = +25C, unless otherwise noted.)
OUTPUT LOW VOLTAGE vs. TEMPERATURE
MAX3093/94E-02
MAX3093E/MAX3094E
OUTPUT CURRENT vs. OUTPUT LOW VOLTAGE
MAX3093/94E-01
OUTPUT CURRENT vs. OUTPUT HIGH VOLTAGE
30 25 OUTPUT CURRENT (mA) 20 15 10 MAX3094E 5 0 MAX3093E
0.9 OUTPUT LOW VOLTAGE (V) 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0
IOUT = 8mA
MAX3093E -40 OUTPUT CURRENT (mA)
-30
-20 MAX3094E -10
MAX3094E MAX3093E
0 0 1 2 3 4 5 OUTPUT LOW VOLTAGE (V)
0
1
2
3
4
5
-40
-15
10
35
60
85
OUTPUT HIGH VOLTAGE (V)
TEMPERATURE (C)
OUTPUT HIGH VOLTAGE vs. TEMPERATURE
MAX3093/94E-04
SUPPLY CURRENT vs. TEMPERATURE
MAX3093/94E-05
SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE
MAX3093/94E-06
5 MAX3093E OUTPUT HIGH VOLTAGE (V) 4
3.0
20 SHUTDOWN SUPPLY CURRENT (nA)
2.8 SUPPLY CURRENT (mA)
15
3 MAX3094E 2
2.6 MAX3093E/MAX3094E 2.4
10 MAX3093E MAX3094E 5
1 IOUT = -8mA -40 -15 10 35 60 85
2.2
0
2.0 -40 -15 10 35 60 85 TEMPERATURE (C) TEMPERATURE (C)
0 -40 -15 10 35 60 85 TEMPERATURE (C)
MAX3093E PROPAGATION DELAY vs. TEMPERATURE
MAX3093/94E-07
MAX3094E PROPAGATION DELAY vs. TEMPERATURE
VID = 3V CL = 15pF
MAX3093/94E-08
120
VID = 3V CL = 15pF
140 130 PROPAGATION DELAY (ns) 120 110 100 90 80
PROPAGATION DELAY (ns)
110
100
90
80
70 -40 -15 10 35 60 85 TEMPERATURE (C)
-40
-15
10
35
60
85
TEMPERATURE (C)
_______________________________________________________________________________________
MAX3093/94E-03
-50
1.0
5
15kV ESD-Protected, 10Mbps, 3V/5V, Low-Power Quad RS-422/RS-485 Receivers MAX3093E/MAX3094E
Typical Operating Characteristics (continued)
(VCC = +5V for MAX3093E, VCC = +3.3V for MAX3094E, TA = +25C, unless otherwise noted.) SHUTDOWN TIMING
MAX3093/94E TOC09
MAX3093E Y VOLTAGE
5V/div
MAX3094E Y VOLTAGE G VOLTAGE
2V/div
2V/div
TIME (200ns/div) CIRCUIT OF FIGURE 3, S1 OPEN, S2 CLOSED, S3 = 1V
Pin Description
PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 6 NAME AA+ YA ENAC YC C+ CGND DD+ YD ENBD YB B+ BVCC Inverting Receiver A Input Noninverting Receiver A Input Receiver A Output. Enabled when ENAC = high. YA will be logic high if A+ > A- by 200mV, and low if A+ < A- by 200mV. It will be logic high if A+ and A- remain floating. Otherwise, the state is undetermined. YA goes high impedance when ENAC = low. Receiver Output A and C Enable High. A logic high on this input enables receivers A and C. Receiver C Output. Same functionality as YA. Noninverting Receiver C Input Inverting Receiver C Input Ground Inverting Receiver D Input Noninverting Receiver D Input Receiver D Output. Enabled when ENBD = high. YD will be logic high if D+ > D- by 200mV, and low if D+ < D- by 200mV. It will be a logic high if D+ and D- remain floating. Otherwise, the state is undetermined. YD goes high impedance when ENBD = low. Receiver Output B and D Enable High. A logic high on this input enables receivers B and D. Receiver B Output. Same functionality as YD. Noninverting Receiver B Input Inverting Receiver B Input Positive Supply FUNCTION
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15kV ESD-Protected, 10Mbps, 3V/5V, Low-Power Quad RS-422/RS-485 Receivers MAX3093E/MAX3094E
|VID| = 3V
VID R ENAC = VCC or ENBD = VCC VID R OUT CL 15pF
VOL
IOL (+)
VOH
IOH (-) IN 1.5V 1.5V
3.0V
0 tPLH tPHL VCC OUT VCC/2 VCC/2 0
Figure 1. Receiver VOH and VOL
Figure 2. Receiver Propagation Delay
+1V -1V
S3 1k VID R ENAC, ENBD CL 15pF
S1 VCC S2
3V ENAC ENBD 1.5V 1.5V 0 tZH tHZ VOH OUT 0.25V VCC/2 0 S1 OPEN S2 CLOSED S3 = 1V 0.25V S1 CLOSED S2 OPEN S3 = -1V OUT VCC/2 ENAC ENBD tLZ tZL
3V
0
VCC
VOL
Figure 3. Receiver Enable and Disable Times
_______________________________________________________________________________________
7
15kV ESD-Protected, 10Mbps, 3V/5V, Low-Power Quad RS-422/RS-485 Receivers MAX3093E/MAX3094E
_______________Detailed Description
15kV ESD Protection
As with all Maxim devices, ESD-protection structures are incorporated on all pins to protect against ESDs encountered during handling and assembly. The MAX3093E/MAX3094E receiver inputs have extra protection against static electricity found in normal operation. Maxim's engineers have developed stateof-the-art structures to protect these pins against 15kV ESD without damage. After an ESD event, the MAX3093E/MAX3094E continue working without latchup. ESD protection can be tested in several ways. The receiver inputs are characterized for protection to the following: * 15kV using the Human Body Model * 8kV using the Contact Discharge Method specified in IEC 1000-4-2 (formerly IEC 801-2) * 15kV using the Air-Gap Method specified in IEC 1000-4-2 (formerly IEC 801-2) ESD Test Conditions ESD performance depends on a number of conditions. Contact Maxim for a reliability report that documents test setup, methodology, and results. Human Body Model Figure 4a shows the Human Body Model, and Figure 4b shows the current waveform it generates when discharged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of interest, which is then discharged into the device through a 1.5k resistor. IEC 1000-4-2 Since January 1996, all equipment manufactured and/or sold in the European community has been required to meet the stringent IEC 1000-4-2 specification. The IEC 1000-4-2 standard covers ESD testing and performance of finished equipment; it does not specifically refer to integrated circuits. The MAX3093E/MAX3094E help you design equipment that meets Level 4 (the highest level) of IEC 1000-4-2, without additional ESD-protection components. The main difference between tests done using the Human Body Model and IEC 1000-4-2 is higher peak current in IEC 1000-4-2. Because series resistance is lower in the IEC 1000-4-2 ESD test model (Figure 5a), the ESD-withstand voltage measured to this standard is generally lower than that measured using the Human Body Model. Figure 5b shows the current waveform for the 8kV IEC 1000-4-2 Level 4 ESD Contact Discharge test. The Air-Gap test involves approaching the device with a charge probe. The Contact-Discharge method connects the probe to the device before the probe is energized. Machine Model The Machine Model for ESD testing uses a 200pF storage capacitor and zero-discharge resistance. It mimics the stress caused by handling during manufacturing and assembly. All pins (not just RS-485 inputs) require this protection during manufacturing. Therefore, the Machine Model is less relevant to the I/O ports than are the Human Body Model and IEC 1000-4-2.
Low-Power Shutdown Mode
The function tables show the functionality of the enable inputs. The MAX3093E/MAX3094E enter shutdown when ENAC and ENBD are low. In shutdown, all outputs go high impedance and the devices typically draw less than 1nA. The devices exit shutdown by taking either ENAC or ENBD high. The typical shutdown exit time is 600ns.
Function Tables
ENAC 1 1 1 0 0 ENBD X X X 1 0 (IN+ - IN-) 200mV -200mV Open X X OUTPUT YA OR YC 1 0 1 High-Z High OUTPUT YB OR YD 1 0 1 High-Z High-Z DEVICE MODE On On On On Shutdown DEVICE MODE On On On On Shutdown
ENBD 1 1 1 0 0
ENAC X X X 1 0
(IN+ - IN-) 200mV -200mV Open X X
X = don't care, High-Z = high impedance
8
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15kV ESD-Protected, 10Mbps, 3V/5V, Low-Power Quad RS-422/RS-485 Receivers MAX3093E/MAX3094E
RC 1M CHARGE-CURRENT LIMIT RESISTOR HIGHVOLTAGE DC SOURCE RD 1.5k DISCHARGE RESISTANCE DEVICE UNDER TEST HIGHVOLTAGE DC SOURCE RC 50M to 100M CHARGE-CURRENT LIMIT RESISTOR RD 330 DISCHARGE RESISTANCE DEVICE UNDER TEST
Cs 100pF
STORAGE CAPACITOR
Cs 150pF
STORAGE CAPACITOR
Figure 4a. Human Body ESD Test Model
Figure 5a. IEC 1000-4-2 ESD Test Model
IP 100% 90% AMPERES 36.8% 10% 0 0 tRL TIME
Ir
PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE) IPEAK
I 100% 90%
10% tDL CURRENT WAVEFORM tr = 0.7ns to 1ns 30ns 60ns t
Figure 4b. Human Body Model Current Waveform
Figure 5b. IEC 1000-4-2 ESD-Generator Current Waveform
_______________________________________________________________________________________
9
15kV ESD-Protected, 10Mbps, 3V/5V, Low-Power Quad RS-422/RS-485 Receivers MAX3093E/MAX3094E
Applications Information
Propagation-Delay Matching
The MAX3093E/MAX3094E exhibit propagation delays that are closely matched from one device to another, even between devices from different production lots. This feature allows multiple data lines to receive data and clock signals with minimal skewing with respect to each other. The MAX3093E receiver propagation delays are trimmed to a predetermined value 8ns, while the MAX3094E delays are trimmed to a predetermined value 10ns.
VCC 1k A
MAX3093E MAX3094E
150
128 Receivers on the Bus
The standard RS-485 input impedance is 12k (oneunit load). The standard RS-485 transmitter can drive 32 unit loads. The MAX3093E/MAX3094E present a 1/4unit-load input impedance (48k), which allows up to 128 receivers on a bus. Any combination of these RS485 receivers with a total of 32-unit loads can be connected to the same bus.
1k
B
Figure 6. External Fail-Safe Implementation
Fail-Safe Implementation
The MAX3093E/MAX3094E receiver inputs guarantee a logic high output when the inputs are open circuit (no termination resistor used). This occurs when the transmitter is removed from the bus or when all transmitter outputs are high impedance. However, when the line is terminated and the transmitters are disabled, the differential voltage between the A and B inputs falls below the 200mV RS-485 sensitivity threshold. Consequently, the outputs become undefined. To maintain a failsafe receiver output while using a terminating resistor, input A must be biased at least 200mV above input B. The resistor-divider network shown in Figure 6 is recommended.
Chip Information
TRANSISTOR COUNT: 676
10
______________________________________________________________________________________
15kV ESD-Protected, 10Mbps, 3V/5V, Low-Power Quad RS-422/RS-485 Receivers
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.)
TSSOP4.40mm.EPS
MAX3093E/MAX3094E
______________________________________________________________________________________
11
15kV ESD-Protected, 10Mbps, 3V/5V, Low-Power Quad RS-422/RS-485 Receivers MAX3093E/MAX3094E
Package Information (continued)
(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.)
SOICN .EPS
INCHES DIM A A1 B C e E H L MAX MIN 0.069 0.053 0.010 0.004 0.014 0.019 0.007 0.010 0.050 BSC 0.150 0.157 0.228 0.244 0.016 0.050
MILLIMETERS MAX MIN 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 1.27 BSC 3.80 4.00 5.80 6.20 0.40 1.27
N
E
H
VARIATIONS:
1
INCHES
MILLIMETERS MIN 4.80 8.55 9.80 MAX 5.00 8.75 10.00 N MS012 8 AA 14 AB 16 AC
TOP VIEW
DIM D D D
MIN 0.189 0.337 0.386
MAX 0.197 0.344 0.394
D C
A e B A1
0 -8 L
FRONT VIEW
SIDE VIEW
PROPRIETARY INFORMATION TITLE:
PACKAGE OUTLINE, .150" SOIC
APPROVAL DOCUMENT CONTROL NO. REV.
21-0041
B
1 1
12
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15kV ESD-Protected, 10Mbps, 3V/5V, Low-Power Quad RS-422/RS-485 Receivers
Package Information (continued)
(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.)
MAX3093E/MAX3094E
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 _____________________13 (c) 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
PDIPN.EPS

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