鈩?/div>
up
to 15 Mbps
TTL- and CMOS-Input Compatibility
Output Short-Circuit Protection
Interchangeable With National
Semiconductor鈩?DS9638
D OR P PACKAGE
(TOP VIEW)
V
CC
1A
2A
GND
1
2
3
4
8
7
6
5
1Y
1Z
2Y
2Z
description
The uA9638C is a dual high-speed differential line driver designed to meet ANSI Standard EIA / TIA-422-B. The
inputs are TTL and CMOS compatible and have input clamp diodes. Schottky-diode-clamped transistors are
used to minimize propagation delay time. This device operates from a single 5-V power supply and is supplied
in an 8-pin package.
The uA9638 provides the current needed to drive low-impedance loads at high speeds. Typically used with
twisted-pair cabling and differential receiver(s), base-band data transmission can be accomplished up to and
exceeding 15 Mbps in properly designed systems. The uA9637A dual line receiver is commonly used as the
receiver. For even faster switching speeds in the same pin configuration, see the SN75ALS191.
The uA9638C is characterized for operation from 0擄C to 70擄C.
logic symbol
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8
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logic diagram
2
8
7
6
5
1Y
1Z
2Y
2Z
1A
2
1Y
1Z
2Y
2Z
1A
2A
3
2A
3
鈥?This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
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.
National Semiconductor is a trademark of National Semiconductor Corporation.
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.
Copyright
漏
1994, Texas Instruments Incorporated
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
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