參數(shù)資料
型號: MC74ACT161
廠商: ON SEMICONDUCTOR
元件分類: 通用總線功能
英文描述: SYNCHRONOUS PRESETTABLE BINARY COUNTER
中文描述: 同步預(yù)置二進(jìn)制計數(shù)器
文件頁數(shù): 1/12頁
文件大小: 309K
代理商: MC74ACT161
5-1
FACT DATA
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
15
16
14
13
12
11
10
2
1
*R
3
4
5
6
7
VCC
9
8
TC
Q0
Q1
Q2
Q3
CET
PE
CP
P0
P1
P2
P3
CEP
GND
PIN NAMES
CEP
CET
CP
MR
SR
P0–P3
PE
Q0–Q3
TC
Count Enable Parallel Input
Count Enable Trickle Input
Clock Pulse Input
(
161) Asynchronous Master Reset Input
(
163) Synchronous Reset Input
Parallel Data Inputs
Parallel Enable Input
Flip-Flop Outputs
Terminal Count Output
SYNCHRONOUS
PRESETTABLE
BINARY COUNTER
N SUFFIX
CASE 648-08
PLASTIC
D SUFFIX
CASE 751B-05
PLASTIC
LOGIC SYMBOL
*MR for
161
*SR for
163
PE P0P1P2
CEP
CET
CP
*R Q0Q1Q2Q3
P3
TC
相關(guān)PDF資料
PDF描述
MC74ACT163 SYNCHRONOUS PRESETTABLE BINARY COUNTER
MC74AC161 SYNCHRONOUS PRESETTABLE BINARY COUNTER
MC74AC163N SYNCHRONOUS PRESETTABLE BINARY COUNTER
MC74ACT161D SYNCHRONOUS PRESETTABLE BINARY COUNTER
MC74ACT163N SYNCHRONOUS PRESETTABLE BINARY COUNTER
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