器件名称:
MC74ACT162D
功能描述:
SYNCHRONOUS PRESETTABLE BCD DECADE COUNTER
文件大小:
323.51KB 共14页
简 介:
MC74AC160 MC74ACT160 MC74AC162 MC74ACT162 Synchronous Presettable BCD Decade Counter The MC74AC160/74ACT160 and MC74AC162/74ACT162 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 MC74AC160/74ACT160 has an asynchronous Master Reset input that overrides all other inputs and forces the outputs LOW. The MC74AC162/74ACT162 has a Synchronous Reset input that overrides counting and parallel loading and allows all 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 Outputs Source/Sink 24 mA ′ACT160 and ′ACT162 Have TTL Compatible Inputs VCC 16 TC 15 Q0 14 Q1 13 Q2 12 Q3 11 CET 10 PE 9 D SUFFIX CASE 751B-05 PLASTIC N SUFFIX CASE 648-08 PLASTIC SYNCHRONOUS PRESETTABLE BCD DECADE COUNTER 1 *R 2 CP 3 P0 4 P1 5 P2 6 P3 7 CEP 8 GND LOGIC SYMBOL PIN NAMES CEP CET CP MR SR P0–P3 PE Q0–Q3 TC Count Enable Parallel Input Count Enable Trickle Input Clock Pulse Input (′160) Asynchronous Master Reset Input (′162) Synchronous Reset Input Parallel Data Inputs Parallel Enable Input Flip-Flop Outputs Terminal Count Output PE P0 P1 P2 P3 CEP CET TC CP *R Q0 Q1 Q2 Q3 *MR for ′160 *SR for ′162 FACT DATA 5-1 MC74AC160 MC74ACT160 MC74AC……
