TLF6824

June 1988

DP8212DP8212M 8-Bit InputOutput Port

General Description

The DP8212DP8212M is an 8-bit inputoutput port con-

tained in a standard 24-pin dual-in-line package The device

which is fabricated using Schottky Bipolar technology is

part of National Semiconductor’s 8080A support family The

DP8212DP8212M can be used to implement latches gat-

ed buffers or multiplexers Thus all of the major peripheral

and inputoutput functions of a microcomputer system can

be implemented with this device

The

DP8212DP8212M

includes

an

8-bit

latch

with

TRI-STATE

output buffers and device selection and con-

trol logic Also included is a service request flip-flop for the

generation and control of interrupts to the microprocessor

Features

Y

8-Bit data latch and buffer

Y

Service request flip-flop for generation and control of

interrupts

Y

025 mA input load current

Y

TRI-STATE TTL output drive capability

Y

Outputs sink 15 mA

Y

Asynchronous latch clear

Y

365V output for direct interface to INS8080A

Y

Reduces system package count by replacing buffers

latches and multiplexers in microcomputer systems

8080A Microcomputer Family Block Diagram

TLF6824 – 1

TRI-STATE

is a registered trademark of National Semiconductor Corp

C1995 National Semiconductor Corporation

RRD-B30M105Printed in U S A