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MC74F163AD Datasheet(PDF) 1 Page - Motorola, Inc |
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MC74F163AD Datasheet(HTML) 1 Page - Motorola, Inc |
1 / 4 page 4-75 FAST AND LS TTL DATA SYNCHRONOUS PRESETTABLE BINARY COUNTER The MC74F161A and MC74F163A are high-speed synchronous modu- lo-16 binary counters. They are synchronously presettable for application in programmable dividers and have two types of Count Enable inputs plus a Ter- minal Count output for versatility in forming synchronous multistage counters. The MC74F161A has an asynchronous Master Reset input that overrides all other inputs and forces the outputs LOW. The MC74F163A has a Synchro- nous 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 Frequency of 120 MHz CONNECTION DIAGRAM 15 16 14 13 12 11 10 2 1 3 4 5 6 7 VCC 9 8 TC Q0 Q1 Q2 Q3 CET PE *R CP P0 P1 P2 P3 CEP GND *MR for MC74F161A *SR for MC74F163A FUNCTION TABLE SR PE CET CEP ACTION ON THE RISING CLOCK EDGE ( ) L X X X Reset (Clear) H L X X Load (Pn Qn) H H H H Count (Increment) H H L X No Change (Hold) H H X L No Change (Hold) H = HIGH Voltage Level; L = LOW Voltage Level; X = Don’t Care STATE DIAGRAM 15 12 1 2 3 4 5 6 7 8 9 10 11 13 14 0 VCC = PIN 16 GND = PIN 8 LOGIC SYMBOL PE P0 P1 P3 P2 CEP CET CP *R Q0 Q1 Q2 Q3 TC 1 15 7 14 13 12 11 9 3 4 5 6 10 2 MC74F161A MC74F163A SYNCHRONOUS PRESETTABLE BINARY COUNTER FAST ™ SHOTTKY TTL J SUFFIX CERAMIC CASE 620-09 N SUFFIX PLASTIC CASE 648-08 16 1 16 1 ORDERING INFORMATION MC74FXXXAJ Ceramic MC74FXXXAN Plastic MC74FXXXAD SOIC 16 1 D SUFFIX SOIC CASE 751B-03 *MR for MC74F161A *SR for MC74F163A |
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