SY100S391_07 Datasheet, PDF (1/6 Pages) Micrel Semiconductor – LOW-POWER HEX TTL-TO-PECL TRANSLATOR

Micrel, Inc.
LOW-POWER
HEX TTL-TO-PECL
TRANSLATOR
SY100S391
SY100S391
FEATURES
DESCRIPTION
s Operates from a single +5V supply
s Differential PECL outputs
s Function and pinout compatible with Fairchild F100K
s Available in 28-pin PLCC packages
BLOCK DIAGRAM
E
The SY100S391 is a hex TTL-to-PECL translator for
converting TTL logic levels to 100K logic levels. The unique
feature of this translator is the ability to do this translation
using only one +5V supply. The differential outputs allow
each circuit to be used as an inverting/non-inverting translator,
or as a differential line driver. A common enable (E), when
LOW, holds all inverting outputs HIGH and all non-inverting
inputs LOW.
The SY100S391 is ideal for those mixed PECL/TTL
applications which only have a +5V supply available. When
used in the differential mode, the S391, due to its high
common mode rejection, overcomes voltage gradients
between the TTL and PECL ground systems.
Q0
D0
Q0
PIN NAMES
Q1
D1
Q1
Pin
Function
D0 — D5
Data Inputs (TTL)
Q2
Q0 — Q5
Data Outputs (PECL)
D2
Q2
Q0 — Q5
Inverting Data Outputs (PECL)
Q3
E
Enable Input (TTL)
D3
Q3
VCCA
VCCO for ECL Outputs
Q4
D4
Q4
Q5
D5
Q5
M9999-042307
[e-mail] or [phone]
1
Rev.: I
Amendment: /0
Issue Date: April 2007