MC10H641, MC100H641 Single Supply PECL to TTL 1:9 Clock Distribution Chip Description The MC10H/100H641 is a single supply, low skew translating 1:9 clock driver. Devices in the ON Semiconductor H641 translator series MC10H641, MC100H641 GTGT Q6Q6 VTVT Q7Q7 VTVT Q8Q8 GTGT Table 1. PIN DESCRIPTION 25 24 23 22 21 20 19 Pins Function GT 26 18 V BB GT, VT TTL GND, TTL V CC GE, VE ECL GND, ECL V CC Q5 27 17 D D, D Signal Input (Positive ECL) V V Reference Output (Positive ECL) BB BB VT 28 16 D Q0 Q8 Signal Outputs (TTL) EN Enable Input (Positive ECL) Q4 15 VE 1 LEN Latch Enable Input (Positive ECL) VT 2 14 LEN Q3 3 13 GE GT 4 12 EN 56 789 10 11 GT Q2 VT Q1 VT Q0 GT Figure 1. Pinout: PLCC28 (Top View) TTL Outputs Q0 Q1 Q2 Q3 PECL Input D DQ Q4 D V BB Q5 LEN EN Q6 Q7 Q8 Figure 2. Logic Diagram