DS9638MJ/883 NSC [National Semiconductor], DS9638MJ/883 Datasheet

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DS9638MJ/883

Manufacturer Part Number
DS9638MJ/883
Description
RS-422 Dual High Speed Differential Line Driver
Manufacturer
NSC [National Semiconductor]
Datasheet

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© 1998 National Semiconductor Corporation
DS9638
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.
Connection Diagram
For Complete Military Product Specifications,
DS009622
Order Number DS9638CM or DS9638CN
See NS Package Number M08A or N08E
refer to the appropriate SMD or MDS.
See NS Package Number J08A
Order Number DS9638MJ/883
8-Lead DIP
Top View
Features
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 (
n 50 mA output drive capability for 50
n Meets EIA RS-422 specifications
n Propagation delay of less than 10 ns
n “Glitchless” differential output
n Delay time stable with V
n Extended temperature range
(
<
2.0 ns typical) ( Figure 3 )
DS009622-1
<
CC
1.0 ns typical)
and temperature variations
transmission lines
www.national.com
May 1998

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DS9638MJ/883 Summary of contents

Page 1

... Figure Extended temperature range 8-Lead DIP DS009622-1 Top View Order Number DS9638CM or DS9638CN See NS Package Number M08A or N08E refer to the appropriate SMD or MDS. Order Number DS9638MJ/883 See NS Package Number J08A May 1998 < 1.0 ns typical) transmission lines and temperature variations CC ...

Page 2

Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Range Ceramic DIP Molded DIP and SO-8 Lead Temperature Recommended Operating Conditions Supply Voltage ( ...

Page 3

Switching Characteristics = 5.0V 25˚ Symbol Parameter t Propagation Delay PHL t PLH t Fall Time, 90%–10 Rise Time, 10%–90 –t Skew Between Outputs PO PO A/A and B/B DC Test ...

Page 4

DC Test Circuit (Continued) Note 6: The pulse generator has the following characteristics: C includes probe and jig capacitance. L PRR = 500 kHz 100 ns 5.0 ns FIGURE 3. ...

Page 5

... Physical Dimensions inches (millimeters) unless otherwise noted Ceramic Dual-In-Line Package (J) Order Number DS9638MJ/883 NS Package Number J08A Ceramic Dual-In-Line Package (M) Order Number DS9638CM NS Package Number M08A 5 www.national.com ...

Page 6

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DE- VICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMI- CONDUCTOR ...

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