TLF10200

June 1989

93L28

Dual 8-Bit Shift Register

General Description

The 93L28 is a high speed serial storage element providing

16 bits of storage in the form of two 8-bit registers The

multifunctional capability of this device is provided by sever-

al features 1) additional gating is provided at the input to

both shift registers so that the input is easily multiplexed

between two sources 2) the clock of each register may be

provided separately or together 3) both the true and com-

plementary outputs are provided from each 8-bit register

and both registers may be master cleared from a common

input

Features

Y

2-input multiplexer provided at data input of each

register

Y

Gated clock input circuitry

Y

Both true and complementary outputs provided from

last bit of each register

Y

Asynchronous master reset common to both registers

Connection Diagram

Dual-In-Line Package

TLF10200 – 1

Order Number 93L28DMQB or 93L28FMQB

See NS Package Number J16A or W16A

Logic Symbol

TLF10200 – 2

Pin

Description

Names

S

Data Select Input

D0 D1

Data Inputs

CP

Clock Pulse Input (Active HIGH)

Common (Pin 9)

Separate (Pins 7 and 10)

MR

Master Reset Input (Active LOW)

Q7

Last Stage Output

Q7

Complementary Output

C1995 National Semiconductor Corporation

RRD-B30M105Printed in U S A