Datasheet > 逻辑 > 总线驱动器/收发器> 74ABT646CMSAX

74ABT646CMSAX

更新时间： 2024-11-05 23:23:59

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		总线收发器逻辑集成电路光电二极管信息通信管理
页数	文件大小	规格书
9页	100K
描述
Single 8-bit Bus Transceiver

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中文翻译

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数据手册

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74ABT646CMSAX 数据手册

April 1992

Revised November 1999

74ABT646

Octal Transceivers and Registers with 3-STATE Outputs

General Description

Features

The ABT646 consists of bus transceiver circuits with 3-

STATE, D-type flip-flops, and control circuitry arranged for

multiplexed transmission of data directly from the input bus

or from the internal registers. Data on the A or B bus will be

clocked into the registers as the appropriate clock pin goes

to a high logic level. Control OE and direction pins are pro-

vided to control the transceiver function. In the transceiver

mode, data present at the high impedance port may be

stored in either the A or the B register or in both. The select

controls can multiplex stored and real-time (transparent

mode) data. The direction control determines which bus

will receive data when the enable control OE is Active

LOW. In the isolation mode (control OE HIGH), A data may

be stored in the B register and/or B data may be stored in

the A register.

■ Independent registers for A and B buses

■ Multiplexed real-time and stored data

■ A and B output sink capability of 64 mA, source capabil-

ity of 32 mA

■ Guaranteed output skew

■ Guaranteed multiple output switching specifications

■ Output switching specified for both 50 pF and 250 pF

loads

■ Guaranteed simultaneous switching noise level and

dynamic threshold performance

■ Guaranteed latchup protection

■ High impedance glitch free bus loading during entire

power up and power down cycle

■ Nondestructive hot insertion capability

Ordering Code:

Order Number Package Number

Package Description

74ABT646CSC

74ABT646CMSA

74ABT646CMTC

M24B

MSA24

MTC24

24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-153, 4.4mm Wide

24-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide

24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

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

Connection Diagram

Pin Descriptions

Pin Names

A₀–A₇

Description

Data Register A Inputs/3-STATE Outputs

Data Register B Inputs/3-STATE Outputs

Clock Pulse Inputs

B₀–B₇

CPAB, CPBA

SAB, SBA

Select Inputs

Output Enable Input

DIR

Direction Control Input

DS010978

www.fairchildsemi.com

12 3 4 5 6 7...9

中文翻译

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与74ABT646CMSAX相关器件

型号	品牌	获取价格	描述	数据表
74ABT646CMTC	FAIRCHILD	获取价格	Octal Transceivers and Registers with 3-STATE Outputs
74ABT646CMTC	TI	获取价格	ABT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, PLASTIC, TSSOP-24
74ABT646CMTCX	FAIRCHILD	获取价格	Single 8-bit Bus Transceiver
74ABT646CMTCX	TI	获取价格	ABT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, PLASTIC, TSSOP-24
74ABT646CMTCX_NL	FAIRCHILD	获取价格	Registered Bus Transceiver, ABT Series, 1-Func, 8-Bit, True Output, BICMOS, PDSO24, 4.40 M
74ABT646CPC	TI	获取价格	IC ABT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDIP24, 0.300 INCH, PLASTIC, DIP
74ABT646CSC	FAIRCHILD	获取价格	Octal Transceivers and Registers with 3-STATE Outputs
74ABT646CSC	TI	获取价格	ABT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, 0.300 INCH, PLASTIC, SOIC-2
74ABT646CSCX	TI	获取价格	ABT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, 0.300 INCH, PLASTIC, SOIC-2
74ABT646CSCX	FAIRCHILD	获取价格	Single 8-bit Bus Transceiver

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