EL1056AC/EL1056C
Monolithic High-Speed Pin Driver
Features
g
# 250 ps dispersion
# 3 ns delay times
# 1V/ns slew rateÐadjustable
General Description
The EL1056 is designed to drive high-quality test signals into
close or terminated loads. It has a dispersion of 250 ps or less Ð
whether due to signal size or direction of edge. It can output a
very wide 24V output span, encompassing all logic families as
well as analog levels. The EL1056 is fabricated in Elantec’s ox-
ide isolated process, which eliminates the possibility of latch-up
and provides a very durable circuit.
# Wide 12V output levels
# Low overshoot and aberrations in
50X systems
# 3-state output
# Power-down mode reduces
output leakage to nanoamperes
The output can be turned off in two ways; the OE pins allow
the output to be put in a high-impedance state which makes the
output look like a large resistance in parallel with 3 pF, even for
back-driven signals with as much as 2.5V/ms slew rate. The E
pins put the output in an even higher impedance state, guaran-
teed to 150 nA leakage in the EL1056A. This allows accurate
measurements on the bus without disconnecting the EL1056
with a relay.
# Overcurrent sense flag available
to protect internal output devices
# Buffered analog inputs
# Differential logic inputs are
compatible with ECL, TTL, and
CMOS
The EL1056 incorporates an output current sense which can
warn the system controller that excessive output current is
flowing. The trip point is set by two external resistors.
Applications
# Memory testers
# ASIC testers
# Functional board testers
Connection Diagram
# Analog/digital incoming
component verifiers
24-Lead Thermal SOL Package
# Logic emulators
Ordering Information
Ý
Outline
Part No.
Temp. Range
Package
a
EL1056CM 0 C to 75 C
24-Lead
MDP0027
MDP0027
§
§
Thermal SOL
a
EL1056ACM 0 C to 75 C
24-Lead
§
§
Thermal SOL
1056–1
*and Heat-spreader
Top View
Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a ‘‘controlled document’’. Current revisions, if any, to these
specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.
©
1993 Elantec, Inc.
ELANTEC [ ELANTEC SEMICONDUCTOR ]
