1

®

FN7035

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

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EL1056A, EL1056

Monolithic High-Speed Pin Driver

The EL1056 is designed to drive high-

quality test signals into close or

terminated loads. It has a dispersion of

250ps or less — 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 oxide isolated process,

which eliminates the possibility of latch-up and provides a

very durable circuit.

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 3pF,

even for back-driven signals with as much as 2.5V/µs slew

rate. The E pins put the output in an even higher impedance

state, guaranteed to 150nA leakage in the EL1056A. This

allows accurate measurements on the bus without

disconnecting the EL1056 with a relay.

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.

Pinout

EL1056A, EL1056

(24-PIN THERMAL SOL PACKAGE)

TOP VIEW

Features

• Wide ±12V output levels

• 250ps dispersion

• 3ns delay times

• 1V/ns slew rate—adjustable

• Low overshoot and aberrations in 50

Ω systems

• Three-state output

• Power-down mode reduces output leakage to

nanoamperes

• Overcurrent sense flag available to protect internal output

devices

• Buffered analog inputs

• Differential logic inputs are compatible with ECL, TTL, and

CMOS

Applications

• Memory testers

• ASIC testers

• Functional board testers

• Analog/digital incoming component verifiers

• Logic emulators

*and Heat-spreader

Ordering Information

PART

NUMBER

TEMP.

RANGE

PACKAGE

PKG. NO.

EL1056CM

0°C to +75°C

24-Pin Thermal SOL

MDP0027

EL1056ACM

0°C to +75°C

24-Pin Thermal SOL

MDP0027

Data Sheet

March 1993, Rev. A

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