TLF5702

November 1995

DM2502 DM2503 DM2504 Successive Approximation

Registers

General Description

The DM2502 DM2503 and DM2504 are 8-bit and 12-bit

TTL registers designed for use in successive approximation

AD converters These devices contain all the logic and

control circuits necessary in combination with a DA con-

verter to perform successive approximation analog-to-digital

conversions

The DM2502 has 8 bits with serial capability and is not ex-

pandable The DM2503 has 8 bits and is expandable with-

out serial capability The DM2504 has 12 bits with serial

capability and expandability

All three devices are available in ceramic DIP ceramic flat-

pak and molded Epoxy-B DIPs The DM2502 DM2503 and

Features

Y

Complete logic for successive approximation AD con-

verters

Y

8-bit and 12-bit registers

Y

Capable of short cycle or expanded operation

Y

Continuous or start-stop operation

Y

Compatible with DA converters using any logic code

Y

Active low or active high logic outputs

Y

Use as general purpose serial-to-parallel converter or

ring counter

Logic Diagram

DM2502 DM2503

DM2504

TLF5702 – 1

Order Number DM2502J DM2502CJ DM2503J

or DM2503CJ

See NS Package J16A

Order Number DM2502CN or DM2503CN

See NS Package N16A

Order Number DM2502W DM2502CW DM2503W

or DM2503CW

See NS Package W16A

Order Number DM2504F or DM2504CJ

See NS Package F24D

Order Number DM2504J or DM2504CJ

See NS Package J24A

Order Number DM2504CN

See NS Package N24A

C1995 National Semiconductor Corporation

RRD-B30M115Printed in U S A