MC74F160A

SYNCHRONOUS PRESETTABLE BCD DECADE COUNTER The MC74F160A and MC74F162A are high-speed synchronous decade counters operating in the BCD (8421) sequence. They are synchronously presettable for application in programmable dividers and have two types of Count Enable inputs plus a Terminal Count output for versatility in forming synchronous multistage counters. The MC74F160A has an asynchronous Master Reset input that overrides all other inputs and forces the outputs LOW. The MC74F162A has a Synchronous Reset input that overrides counting and parallel loading and allows the outputs to be simultaneously reset on the rising edge of the clock. Synchronous Counting and Loading High-Speed Synchronous Expansion Typical Count Rate of 120 MHz CONNECTION DIAGRAM VCC 16 TC 15 Q0 14 Q1 13 Q2 12 Q3 11 CET 10 PE 9 MC74F160A MC74F162A SYNCHRONOUS PRESETTABLE BCD DECADE COUNTER FAST™ SHOTTKY TTL J SUFFIX CERAMIC CASE 620-09 16 1 16 1 N SUFFIX PLASTIC CASE 648-08 1 *R 2 CP 3 4 P1 5 P2 6 P3 7 CEP 8 GND 16 1 P0 *MR for MC74F160A *SR for MC74F162A D SUFFIX SOIC CASE 751B-03 FUNCTION TABLE SR L H H H H PE X L H H H CET X X H L X CEP X X H X L ACTION ON THE RISING CLOCK EDGE ( Reset (Clear) Load (Pn Qn) ) ORDERING INFORMATION MC74FXXXAJ MC74FXXXAN MC74FXXXAD Ceramic Plastic SOIC Count (Increment) No Change (Hold) No Change (Hold) 9 3 4 5 6 LOGIC SYMBOL H = HIGH Voltage Level; L = LOW Voltage Level; X = Don’t Care STATE DIAGRAM 0 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 7 10 2 P...