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DS9638 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. DS9638
Description  RS-422 Dual High Speed Differential Line Driver
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com

DS9638 Datasheet(HTML) 1 Page - National Semiconductor (TI)

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RS-422 Dual High Speed Differential Line Driver
General Description
The DS9638 is a Schottky, TTL compatible, dual differential
line driver designed specifically to meet the EIA Standard
RS-422 specifications. It is designed to provide unipolar dif-
ferential drive to twisted pair or parallel wire transmission
lines. The inputs are TTL compatible. The outputs are similar
to totem pole TTL outputs, with active pull-up and pull-down.
The device features a short circuit protected active pull-up
with low output impedance and is specified to drive 50
transmission lines at high speed. The mini-DIP provides high
package density.
n Single 5V supply
n Schottky technology
n TTL and CMOS compatible inputs
n Output short circuit protection
n Input clamp diodes
n Complementary outputs
n Minimum output skew (<1.0 ns typical)
n 50 mA output drive capability for 50
Ω transmission lines
n Meets EIA RS-422 specifications
n Propagation delay of less than 10 ns
n “Glitchless” differential output
n Delay time stable with VCC and temperature variations
(<2.0 ns typical) (
Figure 3)
n Extended temperature range
Connection Diagram
8-Lead DIP
Top View
Order Number DS9638CM or DS9638CN
See NS Package Number M08A or N08E
For Complete Military Product Specifications,
refer to the appropriate SMD or MDS.
Order Number DS9638MJ/883
See NS Package Number J08A
May 1998
© 1998 National Semiconductor Corporation

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