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DS8921 Datasheet(PDF) 1 Page - Texas Instruments

Part # DS8921
Description  Differential Line Driver and Receiver Pair
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

DS8921 Datasheet(HTML) 1 Page - Texas Instruments

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5.0 V
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DS8921, DS8921A, DS8921AT
SNLS374D – MAY 1998 – REVISED JANUARY 2015
DS8921x Differential Line Driver and Receiver Pair
1 Features
3 Description
The DS8921, DS8921A, and DS8921AT devices are
1
12-ns Typical Propagation Delay
differential line driver and receiver pairs designed
Output Skew: 0.5 ns Typical
specifically for applications meeting the ST506,
Meets the Requirements of EIA Standard RS-422
ST412, and ESDI disk drive standards. In addition,
these devices meet the requirements of the EIA
Complementary Driver Outputs
standard RS-422.
High Differential or Common-Mode Input Voltage
Ranges of ±7 V
The DS8921x receivers offer an input sensitivity of
200 mV over a ±7 V common mode operating range.
±0.2 V Receiver Sensitivity Over the Input Voltage
Hysteresis is incorporated (typically 70 mV) to
Range
improve noise margin for slowly changing input
Receiver Input Hysteresis: 70 mV Typical
waveforms.
DS8921AT Industrial Temperature Operation:
The DS8921x drivers are designed to provide
(
−40°C to +85°C)
unipolar differential drive to twisted-pair or parallel
wire transmission lines. Complementary outputs are
2 Applications
logically ANDed and provide an output skew of 0.5 ns
(typical) with propagation delays of 12 ns.
Differential Line Driver and Receiver for:
ST506 Disk Drive Standard
The DS8921x devices are designed to be compatible
with TTL and CMOS.
ST412 Disk Drive Standard
ESDI Disk Drive Standard
Device Information(1)
RS-422 Interface
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DS8921
SOIC (8)
4.90 mm x 3.91 mm
DS8921A
PDIP (8)
9.81 mm x 6.35 mm
DS8921AT
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
SPACE
Typical Application Block Diagram
Simplified Functional Block Diagram
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.


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