NOT RECOMMENDED FOR NEW DESIGNS
Precision EdgeВ® PrecisionSY100HA643
EdgeВ®
SY100HA643 DUAL SUPPLY
OCTAL ECL-TO-TTL Micrel, Inc. FEATURES
в– ECL/TTL version of popular ECLinPSв„ў E111
в– 400ps within device skew Precision EdgeВ® в– 800ps part-to-part skew
в– Latch DESCRIPTION в– Differential internal design
в– VBB output 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 singlesupply 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. в– Dual supply
в– Reset/Enable
в– Multiple TTL and ECL power/ground pins …
