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ST34C87 Datasheet(PDF) 1 Page - Exar Corporation

Part No. ST34C87
Description  QUAD RS-422 CMOS Differential Line Driver
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Maker  EXAR [Exar Corporation]
Homepage  http://www.exar.com
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ST34C87 Datasheet(HTML) 1 Page - Exar Corporation

   
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ST34C87
...the analog plus companyTM
QUAD RS-422 CMOS
Differential Line Driver
Rev. 1.01
E1991
EXAR Corporation, 48720 Kato Road, Fremont, CA 94538
z (510) 668-7000 z FAX (510) 668-7017
1
June 1997-3
FEATURES
D Pin-to-Pin Compatible with National DS34C87
D Low Power CMOS Design
D Three-State Outputs with Enable Pin
D Meets the EIA RS-422 Requirements
D Low Propagation Delays
D High Speed
GENERAL DESCRIPTION
The ST34C87 is a CMOS quad differential line driver
designed to meet the standard RS-422 requirements and
digital data transmission over balanced lines. To improve
noise margin and output stability for slow changing input
signals, special hysteresis is built in the ST34C87 circuit.
The ST34C87 is a high speed CMOS line driver designed
to operate with MFM / RLL controllers and hard disk
drives as well as RS-422
digital data transmission
applications. ST34C87 is suitable for low power 5V
operation with high input voltage protection devices.
ORDERING INFORMATION
Part No.
Package
Operating
Temperature Range
ST34C87CP16
16 Lead 300 Mil PDIP
0
°C to +70°C
ST34C87CF16
16 Lead 150 Mil JEDEC SOIC
0
°C to +70°C
ST34C87IP16
16 Lead 300 Mil PDIP
-40
°C to +85°C
ST34C87IF16
16 Lead 150 Mil JEDEC SOIC
-40
°C to +85°C
Figure 1. Block Diagram
INPUT A
OUTPUTA+
OUTPUT A-
ENABLE A/B
OUTPUTB-
OUTPUTB+
INPUT B
INPUT D
OUTPUT D+
OUTPUT D-
OUTPUT C-
OUTPUT C+
INPUT C
ENABLE C/D


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