參數(shù)資料
型號(hào): 74HC161
廠商: NXP Semiconductors N.V.
元件分類: 通用總線功能
英文描述: Presettable synchronous 4-bit binary counter; asynchronous reset
中文描述: 可預(yù)置同步4位二進(jìn)制計(jì)數(shù)器;異步復(fù)位
文件頁(yè)數(shù): 10/12頁(yè)
文件大?。?/td> 83K
代理商: 74HC161
December 1990
10
Philips Semiconductors
Product specification
Presettable synchronous 4-bit binary
counter; asynchronous reset
74HC/HCT161
t
su
set-up time
D
n
to CP
set-up time
PE to CP
set-up time
CEP, CET to CP
hold time
D
n
, PE, CEP,
CET to CP
maximum clock pulse
frequency
18
8
23
27
ns
4.5
Fig.11
t
su
30
17
38
45
ns
4.5
Fig.11
t
su
40
17
50
60
ns
4.5
Fig.12
t
h
0
7
0
0
ns
4.5
Figs 11 and 12
f
max
23
41
18
15
MHz
4.5
Fig.8
SYMBOL
PARAMETER
T
amb
(
°
C)
UNIT
TEST CONDITIONS
74HCT
V
CC
(V)
WAVEFORMS
+
25
40 to
+
85
40 to
+
125
min.
typ.
max.
min.
max.
min.
max.
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