DM8334

更新时间： 2024-11-24 09:53:59

品牌	Logo	应用领域
美国国家半导体 - NSC		锁存器
页数	文件大小	规格书
6页	151K
描述
8-Bit Addressable Latch

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数据手册

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DM8334 数据手册

June 1989

9334/DM9334 8-Bit Addressable Latch

General Description

The DM9334 is a high speed 8-bit Addressable Latch de-

signed for general purpose storage applications in digital

systems. It is a multifunctional device capable of storing sin-

gle line data in eight addressable latches, and being a one-

of-eight decoder and demultiplexer with active level high

outputs. The device also incorporates an active level low

common clear for resetting all latches, as well as an active

level low enable.

When operating the device as an addressable latch, chang-

ing more than one bit of the address could impose a tran-

sient wrong address. Therefore, this should only be done

while in the memory mode.

The function tables summarize the operation of the product.

Features

Common clear

The DM9334 has four modes of operation which are shown

in the mode selection table. In the addressable latch mode,

data on the data line (D) is written into the addressed latch.

The addressed latch will follow the data input with all non-

addressed latches remaining in their previous states. In the

memory mode, all latches remain in their previous state and

are unaffected by the data or address inputs.

Easily expandable

Random (addressable) data entry

Serial to parallel capability

8 bits of storage/output of each bit available

Active high demultiplexing/decoding capability

Alternate Military/Aerospace device (9334) is available.

Contact a National Semiconductor Sales Office/Distrib-

utor for specifications.

In the one-of-eight decoding or demultiplexing mode, the

addressed output will follow the state of the D input with all

other inputs in the low state. In the clear mode all outputs

are low and unaffected by the address and data inputs.

Connection Diagram

Dual-In-Line Package

TL/F/6609–1

Order Number 9334DMQB, 9334FMQB, DM9334J or DM9334N

See NS Package Number J16A, N16E or W16A

1995 National Semiconductor Corporation

TL/F/6609

RRD-B30M105/Printed in U. S. A.

12 3 4 5 6

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