SN65LVDS31_09 Datasheet, PDF (1/30 Pages) Texas Instruments – HIGH-SPEED DIFFERENTIAL LINE DRIVERS

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SN55LVDS31, SN65LVDS31
SN65LVDS3487, SN65LVDS9638
SLLS261L – JULY 1997 – REVISED JULY 2007
HIGH-SPEED DIFFERENTIAL LINE DRIVERS
FEATURES
• Meet or Exceed the Requirements of ANSI
TIA/EIA-644 Standard
• Low-Voltage Differential Signaling With
Typical Output Voltage of 350 mV and 100-Ω
Load
• Typical Output Voltage Rise and Fall Times of
500 ps (400 Mbps)
• Typical Propagation Delay Times of 1.7 ns
• Operate From a Single 3.3-V Supply
• Power Dissipation 25 mW Typical Per Driver
at 200 MHz
• Driver at High Impedance When Disabled or
With V_CC = 0
• Bus-Terminal ESD Protection Exceeds 8 kV
• Low-Voltage TTL (LVTTL) Logic Input Levels
• Pin Compatible With AM26LS31, MC3487, and
μA9638
• Cold Sparing for Space and High Reliability
Applications Requiring Redundancy
DESCRIPTION
The SN55LVDS31, SN65LVDS31, SN65LVDS3487,
and SN65LVDS9638 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 both point-to-point and
multidrop (one driver and multiple receivers) 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.
SN55LVDS31 . . . J OR W
SN65LVDS31 . . . D OR PW
(Marked as LVDS31 or 65LVDS31)
(TOP VIEW)
1A 1
1Y 2
1Z 3
G4
2Z 5
2Y 6
2A 7
GND 8
16 V_CC
15 4A
14 4Y
13 4Z
12 G
11 3Z
10 3Y
9 3A
SN55LVDS31FK
(TOP VIEW)
3 2 1 20 19
1Z ₄
18 ^4Y
G₅
17 ^4Z
NC ₆
16 ^NC
2Z ₇
15 ^G
2Y ₈
14 ^3Z
9 10 11 12 13
SN65LVDS3487D
(Marked as LVDS3487 or 65LVDS3487)
(TOP VIEW)
1A 1
1Y 2
1Z 3
1,2EN 4
2Z 5
2Y 6
2A 7
GND 8
16 V_CC
15 4A
14 4Y
13 4Z
12 3,4EN
11 3Z
10 3Y
9 3A
SN65LVDS9638D (Marked as DK638 or LVDS38)
SN65LVDS9638DGN (Marked as L38)
SN65LVDS9638DGK (Marked as AXG)
(TOP VIEW)
V_CC 1
1A 2
2A 3
GND 4
8 1Y
7 1Z
6 2Y
5 2Z
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1997–2007, Texas Instruments Incorporated