參數(shù)資料
型號(hào): 74HCT160
廠商: NXP Semiconductors N.V.
元件分類: 通用總線功能
英文描述: Presettable synchronous BCD decade counter; asynchronous reset(預(yù)置同步BCD十進(jìn)制計(jì)數(shù)器;異步復(fù)位;)
中文描述: 可預(yù)置同步BCD碼十進(jìn)制計(jì)數(shù)器,異步復(fù)位(預(yù)置同步BCD碼十進(jìn)制計(jì)數(shù)器,異步復(fù)位;)
文件頁(yè)數(shù): 4/9頁(yè)
文件大?。?/td> 63K
代理商: 74HCT160
December 1990
4
Philips Semiconductors
Product specification
Presettable synchronous BCD decade
counter; asynchronous reset
74HC/HCT160
FUNCTION TABLE
Notes
1.
The TC output is HIGH when CET is HIGH and the counter is at terminal count (HLLH).
H = HIGH voltage level
h = HIGH voltage level one set-up time prior to the LOW-to-HIGH CP transition
L = LOW voltage level
I = LOW voltage level one set-up time prior to the LOW-to-HIGH CP transition
q = lower case letters indicate the state of the referenced output one set-up time prior to the LOW-to-HIGH CP
transition
X = don’t care
= LOW-to-HIGH CP transition
OPERATING MODE
INPUTS
OUTPUTS
MR
CP
CEP
CET
PE
D
n
X
I
h
X
X
X
Q
n
L
L
H
count
q
n
q
n
TC
reset (clear)
parallel load
L
H
H
H
H
H
X
X
X
X
X
X
h
I
X
X
X
X
h
X
I
X
I
I
h
h
h
L
L
(1)
count
hold
(do nothing)
(1)
(1)
L
Fig.4 Functional diagram.
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