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MC74ACT163MEL Datasheet(PDF) 1 Page - ON Semiconductor |
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MC74ACT163MEL Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 15 page © Semiconductor Components Industries, LLC, 2006 March, 2006 − Rev. 7 1 Publication Order Number: MC74AC161/D MC74AC161, MC74ACT161, MC74AC163, MC74ACT163 Synchronous Presettable Binary Counter The MC74AC161/74ACT161 and MC74AC163/74ACT163 are high−speed synchronous modulo−16 binary counters. 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 MC74AC161/74ACT161 has an asynchronous Master Reset input that overrides all other inputs and forces the outputs LOW. The MC74AC163/74ACT163 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 125 MHz • Outputs Source/Sink 24 mA • ′ACT161 and ′ACT163 Have TTL Compatible Inputs w These devices are available in Pb−free package(s). Specifications herein apply to both standard and Pb−free devices. Please see our website at www.onsemi.com for specific Pb−free orderable part numbers, or contact your local ON Semiconductor sales office or representative. 15 16 14 13 12 11 10 2 1 3 4 567 VCC 9 8 TC Q0 Q1 Q2 Q3 CET PE *R CP P0 P1 P2 P3 CEP GND Figure 1. Pinout: 16−Lead Packages Conductors (Top View) PIN ASSIGNMENT PIN FUNCTION CEP Count Enable Parallel Input CET Count Enable Trickle Input CP Clock Pulse Input MR (′161) Asynchronous Master Reset Input SR (′163) Synchronous Reset Input P0−P3 Parallel Data Inputs PE Parallel Enable Input Q0−Q3 Flip−Flop Outputs TC Terminal Count Output http://onsemi.com DIP−16 N SUFFIX CASE 648 1 16 SO−16 D SUFFIX CASE 751B 1 16 See general marking information in the device marking section on page 11 of this data sheet. DEVICE MARKING INFORMATION 1 16 EIAJ−16 M SUFFIX CASE 966 See detailed ordering and shipping information in the package dimensions section on page 12 of this data sheet. ORDERING INFORMATION |
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