HD74ACT161 Datasheet, PDF (1/9 Pages) Hitachi Semiconductor – Synchronous Presettable Binary Counter

HD74ACT161/HD74ACT163
Synchronous Presettable Binary Counter
REJ03D0279–0200Z
(Previous ADE-205-402 (Z))
Rev.2.00
Jul.16.2004
Description
The HD74ACT161 and HD74ACT163 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 HD74ACT161 have an
asynchronous Master Reset input that overrides all other inputs and forces the outputs Low. The HD74ACT163 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.
Features
• Synchronous Counting and Loading
• High-Speed Synchronous Expansion
• Typical Count Rate of 125 MHz
• Outputs Source/Sink 24 mA
• HD74ACT161 and HD74ACT163 have TTL-Compatible Inputs
• Ordering Information: Ex. HD74ACT161
Part Name
Package Type Package Code Package Abbreviation Taping Abbreviation (Quantity)
HD74ACT161FPEL SOP-16 pin (JEITA) FP-16DAV
FP
EL (2,000 pcs/reel)
HD74ACT161RPEL SOP-16 pin (JEDEC) FP-16DNV
RP
EL (2,500 pcs/reel)
Notes: 1. Please consult the sales office for the above package availability.
2. The packages with lead-free pins are distinguished from the conventional products by adding V at the end of
the package code.
Pin Arrangement
*R 1
CP 2
P0 3
P1 4
P2 5
P3 6
CEP 7
GND 8
(Top view)
16 VCC
15 TC
14 Q0
13 Q1
12 Q2
11 Q3
10 CET
9 PE
Rev.2.00, Jul.16.2004, page 1 of 8