SY100HA643_06 Datasheet, PDF (1/5 Pages) Micrel Semiconductor – DUAL SUPPLY OCTAL ECL-TO-TTL

Micrel, Inc.
DUAL SUPPLY
OCTAL ECL-TO-TTL
Precision Edge^®
Precision^SYE¹d⁰⁰g^He^A®643
SY100HA643
FEATURES
■ ECL/TTL version of popular ECLinPS™ E111
■ 400ps within device skew
■ 800ps part-to-part skew
■ Latch
■ Differential internal design
■ VBB output
■ Dual supply
■ Reset/Enable
■ Multiple TTL and ECL power/ground pins
■ Fully compatible with MC100H643
■ Higher performance than H643 versions
■ Industrial temperature availability
■ Available in 28-pin PLCC package
BLOCK DIAGRAM
Q0
Q1
Q2
D
D
VBB
LEN
EN
D
Q
Q3
TTL OUTPUTS
Q4
Q5
Precision Edge^®
DESCRIPTION
The SY100HA643 is an enhanced dual supply, low skew
translating 1:8 clock driver. Devices in the Micrel H600
translators series utilize the 28-lead PLCC for optimal power
pinning, signal flow through and electrical performance. The
dual-supply HA643 is similar to the H641, which is a single-
supply 1:9 version of the same function, with higher
performance than the H643 versions.
The device features a 48mA TTL output stage, with AC
performance specified into a 20pF load capacitance. A
Latch is provided on-chip. When LEN is LOW (or left open,
in which case it is pulled LOW by the internal pulldowns)
the latch is transparent. A HIGH on the enable pin (EN)
forces all outputs LOW.
The 100HA643 is compatible with 100K ECL logic levels.
PIN NAMES
Pin
OGND
OVTTTL
IGND
IVT
VEE
VCCE
D, D
VBB
Q0 - Q7
EN
LEN
Function
TTL Output Ground (0V)
Output VCC (+5.0V)
Internal TTL GND (0V)
Internal TTL VCC (+5.0V)
ECL VEE (-5.2/-4.5V)
ECL Ground (0V)
Signal Input (ECL)
VBB Reference Output
Signal Outputs (TTL)
Enable Input (ECL)
Latch Enable Input (ECL)
Q6
Q7
Precision Edge is a registered trademark of Micrel, Inc.
M9999-032906
[e-mail] or [phone]
1
Rev.: H Amendment: /0
Issue Date: March 2006