5

SY100S863

Micrel, Inc.

M9999-032406

hbwhelp@micrel.com or (408) 955-1690

PECL-TO-PECL SWITCHING WAVEFORMS

Figure 2. PECL-to-PECL Transition — Propagation Delay and Transition Times

PULSE

GENERATOR

DQ

Q

EN

DUT

450

Ω

-3V

0V

CH C

50

Ω

CH A

CH B

OSCILLOSCOPE

0.1µ

0.1µ

2V

–3V

USE OSCILLOSCOPE

INTERNAL 50

Ω LOAD

FOR TERMINATION.

50

Ω

Figure 1. PECL-to-PECL AC Test Circuit

PECL DATA

ENABLE

PECL OUTPUT

PECL-TO-PECL TEST CIRCUITRY