SY10H842L_06 Datasheet, PDF (1/6 Pages) Micrel Semiconductor – 3.3V SINGLE SUPPLY QUAD PECL-TO-TTL OUTPUT ENABLE

Micrel, Inc.
3.3V SINGLE SUPPLY QUAD
PECL-TO-TTL OUTPUT ENABLE
Precision Edge^®
Precision _SE^SYd^Y110g^00HHe^88®4422LL
SY10H842L
SY100H842L
FEATURES
■ 3.3V power supply
■ Translates positive ECL-to-TTL (PECL-to-TTL)
■ 300ps pin-to-pin skew
■ 500ps part-to-part skew
■ Differential internal design for increased noise
immunity and stable threshold inputs
■ VBB reference output
■ Single supply
■ Enable input
■ Extra TTL and ECL power/ground pins to reduce
cross-talk/noise
■ High drive capability: 24mA each output
■ Fully compatible with industry standard 10K, 100K
I/O levels
■ Available in 16-pin SOIC package
Precision Edge^®
DESCRIPTION
The SY10/100H842L are single supply, low skew
translating 1:4 clock drivers.
The devices feature a 24mA TTL output stage, with
AC performance specified into a 20pF load capacitance.
A HIGH on the enable pin (EN) forces all outputs LOW.
As frequencies increase to 40MHz and above, precise
timing and shaping of clock signals becomes extremely
important. The H842 solves several clock distribution
problems such as minimizing skew 300ps), maximizing
clock fanout (24mA drive), and precise duty cycle control
through a proprietary differential internal design.
The 10K version is compatible with 10KH ECL logic
levels. The 100K version is compatible with 100K levels.
BLOCK DIAGRAM
TTL Outputs
Q0
Q1
Q2
PIN NAMES
Pin
GT
VT
VE
GE
D, D
VBB
Q0 - Q3
EN
Function
TTL Ground (0V)
TTL VCC (+3.3V)
ECL VCC (+3.3V)
ECL Ground (0V)
Signal Input (PECL)
VBB Reference Output (PECL)
Signal Outputs (TTL)
Enable Input (PECL)
Q3
ECL Input
D
D
VBB
EN
Precision Edge is a registered trademark of Micrel, Inc.
M9999-102606
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1
Rev.: F Amendment: /0
Issue Date: October 2006