2

PRELIMINARY

SY100EL1003

Micrel

D

D

EN

OUT

OUT

LH

LH

L

H

LLL

H

XX

H

H

L

NOTE:

1. L = LOW, H = HIGH, X = don't care

Pin

Function

Separate positive power supply pins help

to isolate sensitive circuitry from noise

generating function. +5V for PECL operation

or ground for ECL operation.

Most negative power supply input. Ground

for PECL operation or -5V for ECL operation.

This pin provides a reference voltage for use

in single ended applications or when the

input signal is AC coupled into the device.

D,D

These differential ECL/PECL 100K

compatible inputs receive NRZ data.

EN

This ECL/PECL 100K compatible input enables

Laser Driver - modulation current transitions to

zero when asserted HIGH.

OUT, OUT

Open collector outputs from the modulation

buffer drive these differential current outputs.

MC

An external voltage sets the main value of

An external resistor sets the source current

NC

These pins are not connected.

Symbol

Rating

Value

Unit

0 to -7.0

V

0 to -6.0

V

Output Current

75

mA

Operating Temperature Range

–40 to +85

°°C

Power Dissipation

500

mW

NOTE:

1. Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded. This is a stress rating only and functional operation is not implied

at conditions other than those detailed in the operational sections of this data sheet. Exposure to ABSOLUTE MAXIMUM RATlNG conditions for extended

periods may affect device reliability.

PIN NAMES

Symbol

Rating

Value

Unit

Power Supply Voltage

–4.75 to -5.25

V

Resistor to Adjust Current

10 to 100

Ω

Resistor to Dissipate Power

10 to 50

Ω

Laser Diode Serial Resistor

0 to 50

Ω

NOTE: