Datasheet > DS8921

DS8921

更新时间： 2024-11-30 02:58:15

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描述
Differential Line Driver and Receiver Pair

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数据手册

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DS8921 数据手册

DS8921, DS8921A, DS8921AT

www.ti.com

SNLS374C –MAY 1998–REVISED APRIL 2013

DS8921/DS8921A/DS8921AT Differential Line Driver and Receiver Pair

Check for Samples: DS8921, DS8921A, DS8921AT

FEATURES

DESCRIPTION

The DS8921, DS8921A are Differential Line Driver

•

12 ns Typical Propagation Delay

Output Skew - 0.5 ns Typical

and Receiver pairs designed specifically for

applications meeting the ST506, ST412 and ESDI

Disk Drive Standards. In addition, these devices meet

the requirements of the EIA Standard RS-422.

Meet the Requirements of EIA Standard RS-

422

•

Complementary Driver Outputs

The DS8921, DS8921A receivers offer an input

sensitivity of 200 mV over a ±7V common mode

operating range. Hysteresis is incorporated (typically

70 mV) to improve noise margin for slowly changing

input waveforms.

High Differential or Common-Mode Input

Voltage Ranges of ±7V

•

±0.2V Receiver Sensitivity over the Input

Voltage Range

The DS8921, DS8921A drivers are designed to

provide unipolar differential drive to twisted pair or

parallel wire transmission lines. Complementary

outputs are logically ANDed and provide an output

skew of 0.5 ns (typ.) with propagation delays of

12 ns.

•

Receiver Input Hysteresis-70 mV Typical

DS8921AT Industrial Temperature Operation:

(−40°C to +85°C)

The DS8921, DS8921A are designed to be

compatible with TTL and CMOS.

Connection Diagram

DS8921/DS8921A/DS8921AT

See Package Number D (R-PDSO-G8) or P (R-PDIP-T8)

Truth Table

Receiver

Driver

Input

V_OUT

Input

V_OUT

_ID≥ V_TH(MAX)

_ID≤ V_TH(MIN)

Open

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.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...15

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