TI-SN75LVDS9638.pdf
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SN75LVDS31, SN75LVDS9638
HIGH-SPEED DIFFERENTIAL LINE DRIVERS
SLLS359C – JUNE 1999 – REVISED JUNE 2001
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
Meets or Exceeds the Requirements of
ANSI TIA/EIA-644 Standard
D
Low-Voltage Differential Signaling With
Typical Output Voltage of 350 mV and a
100-Ω Load
D
Signaling Rates up to 155 Mbps
D
Operates From a Single 3.3-V Supply
D
Driver at High Impedance When Disabled or
With V
CC
= 0
D
Low-Voltage TTL (LVTTL) Logic Input
Levels
D
Characterized For Operation From
0°C to 70°C
description
The SN75LVDS31 and SN75LVDS9638 are
differential line drivers that implement the
electrical characteristics of low-voltage differential
signaling (LVDS). This signaling technique lowers
the output voltage levels of 5-V differential
standard levels (such as TIA/EIA-422B) to reduce
the power, increase the switching speeds, and allow operation with a 3.3-V supply rail. Any of the four
current-mode drivers will deliver a minimum differential output voltage magnitude of 247 mV into a 100-Ω load
when enabled.
The intended application of these devices and signaling technique is for point-to-point baseband data
transmission over controlled impedance media of approximately 100 Ω. The transmission media may be
printed-circuit board traces, backplanes, or cables. The ultimate rate and distance of data transfer is dependent
upon the attenuation characteristics of the media and the noise coupling to the environment.
The SN75LVDS31 and SN75LVDS9638 are characterized for operation from 0°C to 70°C.
Copyright 2001, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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1A
1Y
1Z
G
2Z
2Y
2A
GND
V
CC
4A
4Y
4Z
G
3Z
3Y
3A
SN75LVDS31D (Marked as 75LVDS31)
SN75LVDS31PW (Marked as DS31)
(TOP VIEW)
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2
3
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5
V
CC
1A
2A
GND
1Y
1Z
2Y
2Z
SN75LVDS9638D (Marked as DF638 or 7L9638)
SN75LVDS9638DGK (Marked as AXK)
(TOP VIEW)
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