1

®

FN7027

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143

Copyright © Intersil Americas Inc. 2003. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.

All other trademarks mentioned are the property of their respective owners.

EL2021

Monolithic Pin Driver

The EL2021 is designed to drive

programmed voltages into difficult

loads. It has the required circuitry to be

used as the pin driver electronics in board test systems.

Capable of overpowering logic outputs, the part can

accurately drive independently set high and low levels with

programmed Slew Rates into reactive loads. It can also be

placed into high impedance to monitor the load without

having to disconnect. Previous board testers had

multiplexing schemes to reduce the number of pin drivers

required. With the small size and power consumption of the

monolithic EL2021, a driver per node with little or no

multiplexing becomes practical. Since only a few pins of

“bed-of-nails” board testers need be active at any given time,

the power-down feature saves substantial power in large

systems.

Pinout

EL2021

(18-PIN DIP)

TOP VIEW

Features

• Wide range of programmable analog output levels

• 0.5 Ampere output drive with external transistors

• Programmable Slew Rate

• Low overshoot with large capacitive loads-stable with

500pF

• 3-state output

• Power-down capability

• Wide supply range

• Overcurrent sense

Applications

• Loaded circuit board testers

• Digital testers

• Programmable 4-quadrant power supplies

Block Diagram

Ordering Information

PART NUMBER

TEMP. RANGE

PACKAGE

PKG. NO.

EL2021CJ

0°C to +75°C

CerDIP

MDP0031

Truth Table

E

OE

DATA

COMMENTS

00

0

Active

00

1

Active

0

1

X

High-Z

Third State

1

X

X

Undefined

Power-down

Data Sheet

November 1993, Rev. F

OBS

OLE

TE P

ROD

UCT

NO R

ECO

MME

NDE

D RE

PLA

CEM

ENT

cont

act o

ur Te

chni

cal S

uppo

rt Ce

nter

at

1-88

8-INT

ERS

IL or

www

.inte

rsil.c

om/t

sc