SY100HA643 Datasheet | Micrel Semiconductor

Micrel, Inc. NOT REMENDED FOR NEW DESIGNS DUAL SUPPLY OCTAL ECL-TO-TTL Precision Edge® Precision SYE1d00g He A®643 Features - ECL/TTL version of popular ECLin PS™ 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 patible with MC100H643 - Higher performance than H643 versions - Industrial temperature availability - Available in 28-pin PLCC package BLOCK DIAGRAM Q0 Q1 Q2 D D VBB 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 singlesupply 1:9 version of the same function, with higher performance than the H643 versions. The device Features a 48m A TTL output stage, with AC performance specified into a 20p F 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...