54ACT399

更新时间： 2024-11-14 22:56:11

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
6页	141K
描述
Quad 2-Port Register

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数据手册

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54ACT399 数据手册

August 1998

54ACT399

Quad 2-Port Register

General Description

Features

n I_CCreduced by 50%

The ’AC/ACT399 is the logical equivalent of a quad 2-input

multiplexer feeding into four edge-triggered flip-flops. A com-

mon Select input determines which of the two 4-bit words is

accepted. The selected data enters the flip-flop on the rising

edge of the clock.

n Select inputs from two data sources

n Fully positive edge-triggered operation

n Outputs source/sink 24 mA

n ACT399 has TTL-compatible inputs

Logic Symbols

Connection Diagrams

Pin Assignment

for DIP and Flatpak

DS100356-1

IEEE/IEC

DS100356-3

Pin Assignment

for LCC

DS100356-5

DS100356-2

Pin Names

Description

Common Select Input

Clock Pulse Input

_0a–I _0d

_1a–I_1d

Data Inputs from Source 0

Data Inputs from Source 1

Q_a–Q_d

TRI-STATE^®is a registered trademark of National Semiconductor Corporation.

FACT^®is a registered trademark of Fairchild Semiconductor Corporation.

DS100356

www.national.com

12 3 4 5 6

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与54ACT399相关器件

型号	品牌	获取价格	描述	数据表
54ACT399D	NSC	获取价格	Quad 2-Port Register
54ACT399DMQB	FAIRCHILD	获取价格	D Flip-Flop, ACT Series, 1-Func, Positive Edge Triggered, 4-Bit, True Output, CMOS, CDIP16
54ACT399DMQB	TI	获取价格	ACT SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, TRUE OUTPUT, CDIP16, CERDIP-16
54ACT399DMQB/NOPB	TI	获取价格	ACT SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, TRUE OUTPUT, CDIP16, CERDIP-16
54ACT399DMQB-RH	NSC	获取价格	IC ACT SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, TRUE OUTPUT, CDIP16, CERAMIC, DIP-16,
54ACT399E-QMLV	ETC	获取价格	Quad D-Type Flip-Flop
54ACT399ERQMLV	ETC	获取价格	Quad D-Type Flip-Flop
54ACT399FM	TI	获取价格	ACT SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, TRUE OUTPUT, CDFP16, CERPACK-16
54ACT399FMQB	FAIRCHILD	获取价格	D Flip-Flop, ACT Series, 1-Func, Positive Edge Triggered, 4-Bit, True Output, CMOS, CDFP16
54ACT399FMQB/NOPB	TI	获取价格	ACT SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, TRUE OUTPUT, CDFP16, CERPACK-16