Datasheet > 74ACTQ657

74ACTQ657

更新时间： 2024-10-31 23:24:03

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
10页	99K
描述
Quiet Series Octal Bidirectional Transceiver with 8-Bit Parity Generator/Checker and 3-STATE Outputs

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74ACTQ657 数据手册

January 1990

Revised September 2000

74ACQ657 • 74ACTQ657

Quiet Series Octal Bidirectional Transceiver with

8-Bit Parity Generator/Checker and 3-STATE Outputs

General Description

Features

■ Guaranteed simultaneous switching noise level and

The ACQ/ACTQ657 contains eight non-inverting buffers

with 3-STATE outputs and an 8-bit parity generator/

checker. Intended for bus oriented applications, the device

combines the 245 and the 280 functions in one package.

dynamic threshold performance

■ Guaranteed pin-to-pin skew AC performance

■ Combines the 245 and the 280 functions in one package

■ 300 mil 24-pin slim dual-in-line package

■ Outputs source/sink 24 mA

The ACQ/ACTQ utilizes Fairchild Quiet Series technol-

ogy to guarantee quiet output switching and improved

dynamic threshold performance. FACT Quiet Series fea-

tures GTO output control and undershoot corrector in

addition to a split ground bus or superior performance.

■ ACTQ has TTL-compatible inputs

Ordering Code:

Order Number Package Number

Package Description

74ACQ657SPC

74ACTQ657SC

74ACTQ657SPC

N24C

M24B

N24C

24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide

24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code

Logic Symbols

Connection Diagram

IEEE/IEC

Pin Descriptions

Pin Names

Description

A₀–A₇

B₀–B₇

T/R

Data Inputs/3-STATE Outputs

Transmit/Receive Input

Enable Input

PARITY

ODD/EVEN

ERROR

Parity Input/3-STATE Output

ODD/EVEN Parity Input

Error 3-STATE Output

FACT , Quiet Series , FACT Quiet Series , and GTO are trademarks of Fairchild Semiconductor Corporation.

DS010636

www.fairchildsemi.com

12 3 4 5 6 7...10

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