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19-3560; Rev 0; 1/05
Video Switch for Dual SCART Connectors
General Description
The MAX7457 4-channel video switch is ideal for antialiasing and DAC-smoothing video applications or wherever analog video is reconstructed from a digital data stream such as cable/satellite/terrestrial set-top boxes (STBs), DVD players, hard disk recorders (HDRs), and personal video recorders (PVRs). The MAX7457 filters and buffers CVBS and RGB video signals, making it ideal for dual SCART (peritelevision) STBs with an auxiliary CVBS input. The MAX7457 operates from a single +5V supply and has a flat passband out to 5MHz with a stopband attenuation of 43dB at 27MHz, making it ideal for NTSC, PAL, and standard-definition digital TV (SDTV) video systems. The MAX7457 output buffers have a fixed gain of +6dB and are capable of driving two standard 150 video loads. The channel for CVBS video has high-frequency boost circuitry that enhances picture sharpness with up to +1.2dB of gain boost without degradation in the stopband. The video output drivers can be disabled by an external control input. The MAX7457 is available in a 16-pin, 5mm x 5mm x 0.8mm TQFN package, and is specified over the extended (-40C to +85C) temperature range.
Features
4-Channel Video Filter/Buffer for RGB and CVBS Signals with Auxiliary Input Allows Auxiliary Input for CVBS Video LoopThrough Applications Filter Response Ideal for NTSC, PAL, and Interlaced SDTV Video Signals 43dB (typ) Stopband Attenuation at 27MHz 0.75dB (max) Passband Ripple Out to 5MHz Blanking Level Voltage on Cable <1V Each Channel Drives Two 150 Video Loads +5V Single-Supply Operation Available in 5mm x 5mm x 0.8mm, 16-Pin TQFN
MAX7457
Ordering Information
PART MAX7457ETE TEMP RANGE -40C to +85C PIN-PACKAGE 16 TQFN-EP* PKG CODE T1655-2
Applications
STBs/HDRs Game Consoles Desktop Video Editors DVD Players Digital VCRs
*EP = Exposed pad. Pin Configuration appears at end of data sheet.
Typical Operating Circuit
VCC SELA 0.1F INA2 0.1F 2-TO-1 MUX LOWPASS FILTER SYNC DETECTOR +6dB OUTA 75 * 75 75 * 75
AUXILIARY VIDEO SOURCE (VCR, DVD, ETC.) ENCODER
CVBS D/A
INA1
75 0.1F R D/A INB LOWPASS FILTER +6dB OUTB 75
*
75
*
75
75 0.1F G D/A INC LOWPASS FILTER +6dB OUTC 75
*
75
*
75
75 0.1F B D/A IND LOWPASS FILTER +6dB OUTD 75
*
75
*
75
MAX7457
GND DISABLE
*OPTIONAL CAPACITORS
________________________________________________________________ Maxim Integrated Products
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.
Video Switch for Dual SCART Connectors MAX7457
ABSOLUTE MAXIMUM RATINGS
VCC to GND ..............................................................-0.3V to +6V INA1, INA2, INB, INC, IND to GND ............-0.3V to (VCC + 0.3V) OUTA, OUTB, OUTC, OUTD to GND .........-0.3V to (VCC + 0.3V) SELA, DISABLE to GND .............................-0.3V to (VCC + 0.3V) Maximum Current into Any Pin Except VCC and GND .....50mA Continuous Power Dissipation (TA = +70C) 16-Pin TQFN (derate 20.8mW/C above +70C)..........................................................1666.7mW Operating Temperature Range ...........................-40C to +85C Storage Temperature Range .............................-65C to +150C Junction Temperature ......................................................+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 = +5V 5%, CL = 0 to 20pF, RL = 75 to GND for DC-coupled load, RL = 75 to VCC/2 for AC-coupled load, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = 5V, TA = +25C.)
PARAMETER Passband Flatness Stopband Attenuation Differential Gain Differential Phase Signal-to-Noise Ratio ASB dG d SNR SYMBOL CONDITIONS Channel INA_ f = 100kHz to 5MHz, relative to 100kHz f 27MHz 5-step modulated staircase 5-step modulated staircase Peak signal (2VP-P) to RMS noise, f = 100Hz to 50MHz Channel INA_ Group Delay Deviation Line-Time Distortion Field-Time Distortion Clamp Settling Time Output DC Clamp Level Low-Frequency Gain Accuracy Low-Frequency Gain Matching Group Delay Matching Channel-to-Channel Crosstalk Disabled Output Impedance Output Short-Circuit Current AV AV(MATCH) tg(MATCH) XTALK ZDISABLE ISC tg HDIST VDIST tCLAMP Deviation from 100kHz to 4.1MHz 18s, 100 IRE bar 130 lines, 18s, 100 IRE bar To 1% Channel INA_ Channel INB, INC, IND f = 100kHz, relative to gain of +6dB Low-frequency channel-to-channel matching, f = 100kHz Low-frequency channel-to-channel matching, f = 100kHz f = 100kHz to 3.58MHz At 5MHz OUT_ shorted to GND or VCC 2 -60 2 70 0.6 1.1 -3 300 0.9 1.5 1.1 1.8 +3 4 Channels INB, INC, IND Channels INB, INC, IND MIN +0.9 -0.75 40 TYP +1.2 +0.15 43 0.15 0.15 80 17 11 30 20 0.3 0.5 ns % % Lines V % % ns dB k mA 0.5 0.5 MAX +1.5 +0.75 dB dB % Degrees dB UNITS
2
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Video Switch for Dual SCART Connectors
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +5V 5%, CL = 0 to 20pF, RL = 75 to GND for DC-coupled load, RL = 75 to VCC/2 for AC-coupled load, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = 5V, TA = +25C.)
PARAMETER Input Leakage Current Input Dynamic Swing Mux Crosstalk SUPPLY Supply Voltage Range Supply Current Power-Supply Rejection Ratio LOGIC INTERFACE Logic Input High Voltage Logic Input Low Voltage Logic Input Current VIH VIL VIL = 0 (sink), VIH = VCC (source) 2.0 0.8 10 V V A VCC ICC PSRR No load VIN = 100mVP-P, f = 0 to 3.5MHz 4.75 100 40 5.25 140 V mA dB SYMBOL IIN Channel INA_ Channels INB, INC, IND f = 100kHz to 4.1MHz -60 CONDITIONS MIN TYP MAX 10 1.2 0.9 UNITS A VP-P dB
MAX7457
Typical Operating Characteristics
(VCC = +5V, TA = +25C, unless otherwise noted.)
AMPLITUDE vs. FREQUENCY
MAX7457 toc01
PASSBAND AMPLITUDE vs. FREQUENCY
1.5 1.0 CHANNEL INA_
MAX7457 toc02
PHASE RESPONSE vs. FREQUENCY
150 100 PHASE (DEGREES) 50 0 -50 -100 -150 -200
MAX7457 toc03
2.0
200
0
AMPLITUDE (dB)
AMPLITUDE (dB)
-20
0.5 0 -0.5 CHANNELS INB/INC/IND -1.0
-40
-60 CHANNEL INA_ -80 1 10 FREQUENCY (MHz) 100
-1.5 -2.0 0.1 1 FREQUENCY (MHz) 10
0.1
1 FREQUENCY (MHz)
10
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3
Video Switch for Dual SCART Connectors MAX7457
Typical Operating Characteristics (continued)
(VCC = +5V, TA = +25C, unless otherwise noted.)
GROUP DELAY vs. FREQUENCY
MAX7457 toc04
2T RESPONSE (1 IRE = 7.14mV)
MAX7457 toc05
MODULATED 12.5T RESPONSE (1 IRE = 7.14mV)
MAX7457 toc06
100 90 GROUP DELAY (ns) 80 70 60 50 40 0.1 1 FREQUENCY (MHz)
IN_ 300mV/div
IN_ 300mV/div
OUT_ 300mV/div
OUT_ 300mV/div
10
200ns/div
400s/div
DIFFERENTIAL GAIN (%)
SUPPLY CURRENT vs. TEMPERATURE
MAX7457 toc07
DIFFERENTIAL GAIN
0.3 0.2 0.1 0 -0.1 -0.2 -0.3 1 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 1 2 3 4 5 6 7 2 3 4 5 6 7
MAX7457 toc08
MULTIBURST RESPONSE
MAX7457 toc09
120 INPUTS BIASED TO +2V NO LOAD SUPPLY CURRENT (mA) 110
IN_ 250mV/div
100 DIFFERENTIAL PHASE (DEGREES)
DIFFERENTIAL PHASE
OUT_ 250mV/div
90
80 -40 -15 10 35 60 85 TEMPERATURE (C)
10s/div
4
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Video Switch for Dual SCART Connectors
Pin Description
PIN 1 2 3 4 5 6, 8, 14 7 9 10 11 12 13 15 16 -- NAME INB INC IND DISABLE SELA N.C. GND VCC OUTD OUTC OUTB OUTA INA2 INA1 EP FUNCTION Channel INB Video Input. Use channel INB for the red (R) signal. AC-couple INB with a series 0.1F capacitor. Channel INC Video Input. Use channel INC for the green (G) signal. AC-couple INC with a series 0.1F capacitor. Channel IND Video Input. Use channel IND for the blue (B) signal. AC-couple IND with a series 0.1F capacitor. Disable Logic Input. A logic low on DISABLE enables the output buffers. A logic high on DISABLE disables all buffer outputs and puts them in a high-impedance state. Select A Input. A logic low on SELA selects INA1 and a logic high on SELA selects INA2. No Connection. Not internally connected. Ground +5V Supply Input Channel D Video Output. OUTD can be either AC- or DC-coupled. Channel C Video Output. OUTC can be either AC- or DC-coupled. Channel B Video Output. OUTB can be either AC- or DC-coupled. Channel A Video Output. OUTA can be either AC- or DC-coupled. Channel INA2 Video Input. Connect auxiliary CVBS to INA2. AC-couple INA2 with a series 0.1F capacitor. Channel INA1 Video Input. Connect CVBS to INA1. AC-couple INA1 with a series 0.1F capacitor. Exposed Pad. Connect to GND for improved thermal heat sinking.
MAX7457
Detailed Description
The MAX7457 4-channel video switch filters and buffers video encoder DAC outputs in applications such as STBs, HDRs, DVD players, and digital VCRs. The MAX7457 offers an auxiliary CVBS loop-through feature required in dual SCART applications. Audio and video switching in SCART STBs utilize a costly integrated A/V switch offering high-end features such as volume control and high audio-drive capability. A more cost-effective solution uses the MAX7457 for the video switching along with low-cost standard passive analog switches for the audio switching. The MAX7457 reconstructs and cleans up analog video signals from the video encoder's DAC output. Each channel consists of a lowpass filter and an output video buffer that drives two standard 150 video loads. The MAX7457 operates from a single +5V supply and has a nominal cutoff frequency of 5MHz, optimized for NTSC, PAL, and SDTV.
Filter
Filter Response The reconstruction filter consists of two 2nd-order Sallen-Key stages. The Butterworth-type response features a maximally flat passband for NTSC and PAL bandwidths. The stopband offers at least 43dB (typ) of attenuation at the video encoder's DAC sampling frequency of 27MHz (see the Typical Operating Characteristics). High-Frequency Boost INA1/INA2 have +1.2dB of high-frequency boost that increases image sharpness by compensating for signal degradation and rolloff in the video encoder. Channels INB/INC/IND (RGB) do not boost high-frequency signals and have a flat response over the video bandwidth.
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5
Video Switch for Dual SCART Connectors MAX7457
Output Buffers
Each output buffer has a fixed gain of +6dB and can drive two 150 video loads with a 2VP-P signal. The MAX7457 can drive an AC-coupled load or drive a DCcoupled load, eliminating the large coupling capacitors. The output buffers drive DC loads with an output blanking level of less than 1V. Output Clamp Level The video signal processed by channel INA_ (CVBS video signal) must include a sync pulse. This sync pulse provides the required timing to all four channels. When channel INA_ detects a sync pulse, the DC restore loop is activated. The function of the loop is to set the DC level of the video signal to a specified voltage. See Table 1 for clamp levels.
Applications Information
Input Considerations
Use 0.1F ceramic capacitors to AC-couple the inputs. The input capacitors store a DC level so the outputs are clamped to an appropriate DC voltage level.
Output Considerations
The outputs are typically connected to a 75 series back-match resistor followed by the video cable. Because of the inherent divide-by-two of this configuration, the voltage on the video cable is always less than 1V, complying with industry-standard video requirements such as the European SCART standard (which allows up to 2V of DC on the video cable). The video buffer can also drive an AC-coupled video load. An output capacitor as low as 220F provides good video performance.
Table 1. Output Clamp Level
CHANNEL A B C D CLAMP LEVEL (V) 0.9 1.5 1.5 1.5
Power-Supply Bypassing and Layout
The MAX7457 operates from a single +5V supply. Bypass VCC to GND with a 0.1F capacitor. Place all external components as close to the device as possible.
Exposed Pad
The TQFN package has an exposed pad on the bottom of the package. This pad is electrically connected to GND and should be connected to the ground plane for improved thermal conductivity. Do not route signals under this package.
Input Multiplexer
The MAX7457 has a 2-to-1 input multiplexer at channel INA_. The input to the CVBS channel comes from either a DAC output or from a CVBS source and is selected by SELA. Pull SELA low to select INA1 or high to select INA2.
Pin Configuration
INA1 INA2 N.C.
Chip Information
TRANSISTOR COUNT: 4579 PROCESS: BiCMOS
TOP VIEW
16
15
14
13
INB INC IND DISABLE
OUTA 12 OUTB 11 OUTC 10 OUTD 9 VCC 8 N.C.
1 2
MAX7457
3 4 5 SELA 6 N.C. 7 GND
TQFN
6
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Video Switch for Dual SCART Connectors
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.)
D2 D D/2 MARKING k L
C L
MAX7457
b D2/2
0.10 M C A B
AAAAA
E/2 E2/2 E (NE-1) X e
C L
E2
PIN # 1 I.D.
DETAIL A
e (ND-1) X e
e/2
PIN # 1 I.D. 0.35x45 DETAIL B
e
L1
L
C L
C L
L
L
e 0.10 C A 0.08 C
e
C
A1 A3
PACKAGE OUTLINE, 16, 20, 28, 32, 40L THIN QFN, 5x5x0.8mm
-DRAWING NOT TO SCALE-
21-0140
I
1 2
COMMON DIMENSIONS
PKG. 16L 5x5 20L 5x5 28L 5x5 32L 5x5 40L 5x5 SYMBOL MIN. NOM. MAX. MIN. NOM. MAX. MIN. NOM. MAX. MIN. NOM. MAX. MIN. NOM. MAX.
EXPOSED PAD VARIATIONS PKG. CODES T1655-2 T1655-3 T1655N-1 T2055-3
D2
3.10 3.10 3.10 3.10 3.10 3.25 3.25 2.70 2.70 3.25 2.70 3.25 3.25 3.10 3.10 3.10 3.10 3.30 3.20 3.20 3.20 3.20 3.20 3.35 3.35 2.80 2.80 3.35 2.80 3.35 3.35 3.20 3.20 3.20 3.20 3.40 3.00 3.00 3.00 3.00 3.00 3.15 3.15 2.60 2.60 3.15 2.60 3.15 3.15 3 3.00 3 3.00 3.00 3.00 3.20
E2
exceptions
L
MIN. NOM. MAX. MIN. NOM. MAX. 0.15
DOWN BONDS ALLOWED
A A1 A3 b D E e k L
0.70 0.75 0.80 0.70 0.75 0.80 0.70 0.75 0.80 0.70 0.75 0.80 0.70 0.75 0.80 0 0.02 0.05 0 0.02 0.05 0 0.02 0.05 0 0.02 0.05 0 0.02 0.05 0.20 REF. 0.20 REF. 0.20 REF. 0.20 REF. 0.20 REF. 0.25 0.30 0.35 0.25 0.30 0.35 0.20 0.25 0.30 0.20 0.25 0.30 0.15 0.20 0.25 4.90 5.00 5.10 4.90 5.00 5.10 4.90 5.00 5.10 4.90 5.00 5.10 4.90 5.00 5.10 4.90 5.00 5.10 4.90 5.00 5.10 4.90 5.00 5.10 4.90 5.00 5.10 4.90 5.00 5.10 0.65 BSC. 0.50 BSC. 0.40 BSC. 0.80 BSC. 0.50 BSC.
- 0.25 - 0.25 0.25 - 0.25 - 0.25 0.35 0.45 0.30 0.40 0.50 0.45 0.55 0.65 0.45 0.55 0.65 0.30 0.40 0.50 0.40 0.50 0.60 L1 - 0.30 0.40 0.50 40 N 16 20 28 32 ND 10 4 5 7 8 10 4 5 7 8 NE ----WHHB WHHC WHHD-1 WHHD-2 JEDEC
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 0.25 mm AND 0.30 mm FROM TERMINAL TIP.
3.00 3.00 3.00 3.00 3.00 T2055-4 T2055-5 3.15 T2855-3 3.15 T2855-4 2.60 T2855-5 2.60 3.15 T2855-6 T2855-7 2.60 T2855-8 3.15 T2855N-1 3.15 T3255-3 3.00 T3255-4 3.00 T3255-5 3.00 T3255N-1 3.00 T4055-1 3.20
3.10 3.10 3.10 3.10 3.10 3.25 3.25 2.70 2.70 3.25 2.70 3.25 3.25 3.10 3.10 3.10 3.10 3.30
3.20 3.20 3.20 3.20 3.20 3.35 3.35 2.80 2.80 3.35 2.80 3.35 3.35 3.20 3.20 3.20 3.20 3.40
** ** ** ** ** 0.40 ** ** ** ** ** 0.40 ** ** ** ** ** **
YES NO NO YES NO YES YES YES NO NO YES YES NO YES NO YES NO YES
** SEE COMMON DIMENSIONS TABLE
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, EXCEPT EXPOSED PAD DIMENSION FOR T2855-3 AND T2855-6. 10. WARPAGE SHALL NOT EXCEED 0.10 mm. 11. MARKING IS FOR PACKAGE ORIENTATION REFERENCE ONLY. 12. NUMBER OF LEADS SHOWN ARE FOR REFERENCE ONLY. 13. LEAD CENTERLINES TO BE AT TRUE POSITION AS DEFINED BY BASIC DIMENSION "e", 0.05.
PACKAGE OUTLINE, 16, 20, 28, 32, 40L THIN QFN, 5x5x0.8mm
-DRAWING NOT TO SCALE-
21-0140
I
2 2
_______________________________________________________________________________________
QFN THIN.EPS
7
Video Switch for Dual SCART Connectors MAX7457
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.)
QFN THIN.EPS
L
D2 D D/2 MARKING k L
C L
b D2/2
0.10 M C A B
AAAAA
E/2 E2/2 E (NE-1) X e
C L
E2
PIN # 1 I.D.
DETAIL A
e (ND-1) X e
e/2
PIN # 1 I.D. 0.35x45 DETAIL B
e
L1
L
C L
C L
L
e 0.10 C A 0.08 C
e
C
A1 A3
PACKAGE OUTLINE, 16, 20, 28, 32, 40L THIN QFN, 5x5x0.8mm
-DRAWING NOT TO SCALE-
21-0140
I
1 2
COMMON DIMENSIONS
PKG. 16L 5x5 20L 5x5 28L 5x5 32L 5x5 40L 5x5 SYMBOL MIN. NOM. MAX. MIN. NOM. MAX. MIN. NOM. MAX. MIN. NOM. MAX. MIN. NOM. MAX.
EXPOSED PAD VARIATIONS PKG. CODES T1655-2 T1655-3 T1655N-1 T2055-3
D2
3.10 3.10 3.10 3.10 3.10 3.25 3.25 2.70 2.70 3.25 2.70 3.25 3.25 3.10 3.10 3.10 3.10 3.30 3.20 3.20 3.20 3.20 3.20 3.35 3.35 2.80 2.80 3.35 2.80 3.35 3.35 3.20 3.20 3.20 3.20 3.40 3.00 3.00 3.00 3.00 3.00 3.15 3.15 2.60 2.60 3.15 2.60 3.15 3.15 3 3.00 3 3.00 3.00 3.00 3.20
E2
exceptions
L
MIN. NOM. MAX. MIN. NOM. MAX. 0.15
DOWN BONDS ALLOWED
A A1 A3 b D E e k L
0.70 0.75 0.80 0.70 0.75 0.80 0.70 0.75 0.80 0.70 0.75 0.80 0.70 0.75 0.80 0 0.02 0.05 0 0.02 0.05 0 0.02 0.05 0 0.02 0.05 0 0.02 0.05 0.20 REF. 0.20 REF. 0.20 REF. 0.20 REF. 0.20 REF. 0.25 0.30 0.35 0.25 0.30 0.35 0.20 0.25 0.30 0.20 0.25 0.30 0.15 0.20 0.25 4.90 5.00 5.10 4.90 5.00 5.10 4.90 5.00 5.10 4.90 5.00 5.10 4.90 5.00 5.10 4.90 5.00 5.10 4.90 5.00 5.10 4.90 5.00 5.10 4.90 5.00 5.10 4.90 5.00 5.10 0.80 BSC. 0.65 BSC. 0.50 BSC. 0.40 BSC. 0.50 BSC.
- 0.25 - 0.25 0.25 - 0.25 - 0.25 0.35 0.45 0.30 0.40 0.50 0.45 0.55 0.65 0.45 0.55 0.65 0.30 0.40 0.50 0.40 0.50 0.60 - 0.30 0.40 0.50 16 40 N 20 28 32 ND 4 10 5 7 8 4 10 5 7 8 NE WHHB ----WHHC WHHD-1 WHHD-2 JEDEC L1
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 0.25 mm AND 0.30 mm FROM TERMINAL TIP.
3.00 3.00 3.00 3.00 3.00 T2055-4 T2055-5 3.15 T2855-3 3.15 T2855-4 2.60 T2855-5 2.60 3.15 T2855-6 T2855-7 2.60 T2855-8 3.15 T2855N-1 3.15 T3255-3 3.00 T3255-4 3.00 T3255-5 3.00 T3255N-1 3.00 T4055-1 3.20
3.10 3.10 3.10 3.10 3.10 3.25 3.25 2.70 2.70 3.25 2.70 3.25 3.25 3.10 3.10 3.10 3.10 3.30
3.20 3.20 3.20 3.20 3.20 3.35 3.35 2.80 2.80 3.35 2.80 3.35 3.35 3.20 3.20 3.20 3.20 3.40
** ** ** ** ** 0.40 ** ** ** ** ** 0.40 ** ** ** ** ** **
YES NO NO YES NO YES YES YES NO NO YES YES NO YES NO YES NO YES
** SEE COMMON DIMENSIONS TABLE
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, EXCEPT EXPOSED PAD DIMENSION FOR T2855-3 AND T2855-6. 10. WARPAGE SHALL NOT EXCEED 0.10 mm. 11. MARKING IS FOR PACKAGE ORIENTATION REFERENCE ONLY. 12. NUMBER OF LEADS SHOWN ARE FOR REFERENCE ONLY. 13. LEAD CENTERLINES TO BE AT TRUE POSITION AS DEFINED BY BASIC DIMENSION "e", 0.05.
PACKAGE OUTLINE, 16, 20, 28, 32, 40L THIN QFN, 5x5x0.8mm
-DRAWING NOT TO SCALE-
21-0140
I
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.
8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc.

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