參數(shù)資料
型號(hào): HD74HC191
廠商: Hitachi,Ltd.
元件分類: 通用總線功能
英文描述: Synchronous Up/Down Decade,4-bit Binary Counter(Single Clock Line)
中文描述: 同步向上/向下十年,4 -位二進(jìn)制計(jì)數(shù)器(單時(shí)鐘線)
文件頁(yè)數(shù): 2/13頁(yè)
文件大?。?/td> 75K
代理商: HD74HC191
HD74HC190/HD74HC191
2
Features
High Speed Operation: t
pd
(Clock to Q) = 22 ns typ (C
L
= 50 pF)
High Output Current: Fanout of 10 LSTTL Loads
Wide Operating Voltage: V
CC
= 2 to 6 V
Low Input Current: 1 μA max
Low Quiescent Supply Current: I
CC
(static) = 4 μA max (Ta = 25°C)
Pin Arrangement
1
2
3
4
5
6
7
8
Q
B
Q
A
Enable G
Down/Up
Q
C
Q
D
GND
V
CC
Data A
Clock
Max/Min
Load
Data C
Data D
16
15
14
13
12
11
10
9
(Top view)
Ripple
Clock
Data B
Ripple
Clock
Outputs
Outputs
Inputs
Inputs
A
CK
Max/Min
Load
C
D
Q
D
Q
C
Dn/Up
G
Q
A
Q
B
B
Inputs
Inputs
Outputs
相關(guān)PDF資料
PDF描述
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