Datasheet > 74AC646SCX

74AC646SCX

更新时间： 2024-11-17 23:24:03

品牌	Logo	应用领域
其他 - ETC		总线收发器逻辑集成电路光电二极管
页数	文件大小	规格书
9页	82K
描述
Single 8-bit Bus Transceiver

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74AC646SCX 数据手册

November 1988

Revised October 2000

74AC646 • 74ACT646

Octal Transceiver/Register with 3-STATE Outputs

General Description

Features

■ Independent registers for A and B buses

■ Multiplexed real-time and stored data transfers

■ 3-STATE outputs

The AC/ACT646 consist of registered bus transceiver cir-

cuits, with outputs, D-type flip-flops and control circuitry

providing multiplexed transmission of data directly from the

input bus or from the internal storage registers. Data on the

A or B bus will be loaded into the respective registers on

the LOW-to-HIGH transition of the appropriate clock pin

(CPAB or CPBA). The four fundamental data handling

functions available are illustrated in Figures 1, 2, 3, and

Figure 4.

■ 300 mil dual-in-line package

■ Outputs source/sink 24 mA

■ ACT646 has TTL compatible inputs

Ordering Code:

Order Number Package Number

Package Description

74AC646SC

M24B

N24C

M24B

N24C

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

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

74AC646SPC

74ACT646SC

74ACT646SPC

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

Data Register A Inputs

Data Register A Outputs

Data Register B Inputs

Data Register B Outputs

Clock Pulse Inputs

CPAB, CPBA

SAB, SBA

Transmit/Receive Inputs

Output Enable Input

DIR

Direction Control Input

FACT is a trademark of Fairchild Semiconductor Corporation.

DS010132

www.fairchildsemi.com

12 3 4 5 6 7...9

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与74AC646SCX相关器件

型号	品牌	获取价格	描述	数据表
74AC646SCX_NL	FAIRCHILD	获取价格	Registered Bus Transceiver, AC Series, 1-Func, 8-Bit, True Output, CMOS, PDSO24, 0.300 INC
74AC646SCXR	FAIRCHILD	获取价格	Registered Bus Transceiver, AC Series, 1-Func, 8-Bit, True Output, CMOS, PDSO24, SOIC-24
74AC646SJ	TI	获取价格	AC SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, SOIC-24
74AC646SJX	TI	获取价格	AC SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, SOIC-24
74AC646SPC	FAIRCHILD	获取价格	Octal Transceiver/Register with 3-STATE Outputs
74AC646SPCQR	FAIRCHILD	获取价格	Registered Bus Transceiver, 1-Func, 8-Bit, True Output, CMOS, PDIP24,
74AC648	FAIRCHILD	获取价格	Octal Transceiver/Register with 3-STATE Outputs
74AC648D	ETC	获取价格	Single 8-Bit Inverting Bus Transceiver
74AC648DB	ETC	获取价格	Single 8-Bit Inverting Bus Transceiver
74AC648DC	FAIRCHILD	获取价格	Registered Bus Transceiver, AC Series, 1-Func, 8-Bit, Inverted Output, CMOS, CDIP24, CERAM