參數(shù)資料
型號: MC74F163AD
廠商: MOTOROLA INC
元件分類: 通用總線功能
英文描述: SYNCHRONOUS PRESETTABLE BINARY COUNTER
中文描述: F/FAST SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, PDSO16
封裝: SOIC-16
文件頁數(shù): 1/4頁
文件大小: 99K
代理商: MC74F163AD
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
o
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
MC74FXXXAN Plastic
MC74FXXXAD SOIC
Ceramic
16
1
D SUFFIX
SOIC
CASE 751B-03
*MR for MC74F161A
*SR for MC74F163A
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