© 2000 Fairchild Semiconductor Corporation

DS010248

www.fairchildsemi.com

October 1989

Revised August 2000

100352

Low Power 8-Bit Buffer with Cut-Off Drivers

General Description

put follows its D input when the OEN pin is LOW. A HIGH

on OEN holds the outputs in a cut-off state. The cut-off

state is designed to be more negative than a normal ECL

LOW level. This allows the output emitter-followers to turn

off when the termination supply is

−2.0V, presenting a high

impedance to the data bus. This high impedance reduces

termination power and prevents loss of low state noise

margin when several loads share the bus.

The 100352 outputs are designed to drive a doubly termi-

nated 50

Ω transmission line (25Ω load impedance). All

inputs have 50 k

Ω pull-down resistors.

Features

s Cut-off drivers

s Drives 25

Ω load

s Low power operation

s 2000V ESD protection

s Voltage compensated operating range

= −4.2V to −5.7V

s Available to industrial grade temperature range

Ordering Code:

Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Logic Symbol

Pin Descriptions

Connection Diagrams

24-Pin DIP

28-Pin PLCC

Order Number

Package Number

Package Description

100352PC

N24E

24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-010, 0.400 Wide

100352QC

V28A

28-Lead Plastic Lead Chip Carrier (PLCC), JEDEC MO-047, 0.450 Square

100352QI

V28A

28-Lead Plastic Lead Chip Carrier (PLCC), JEDEC MO-047, 0.450 Square

Industrial Temperature Range (

−40°C to +85°C)

Pin Names

Description

Data Inputs

OEN

Output Enable Input

Data Outputs

NC

No Connect