參數(shù)資料
型號(hào): 74HCT192N
廠商: NXP SEMICONDUCTORS
元件分類: 通用總線功能
英文描述: Presettable synchronous BCD decade up/down counter
中文描述: HCT SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL DECADE COUNTER, PDIP16
文件頁(yè)數(shù): 5/13頁(yè)
文件大小: 99K
代理商: 74HCT192N
December 1990
5
Philips Semiconductors
Product specification
Presettable synchronous BCD decade
up/down counter
74HC/HCT192
FUNCTION TABLE
Notes
1.
H = HIGH voltage level
L = LOW voltage level
X = don’t care
= LOW-to-HIGH clock transition
TC
U
= CP
U
at terminal count up (HLLH)
TC
D
= CP
D
at terminal count down (LLLL)
2.
3.
OPERATING MODE
INPUTS
OUTPUTS
MR
PL
CP
U
X
X
X
X
L
H
H
CP
D
L
H
L
H
X
X
H
D
0
X
X
L
L
H
H
X
X
D
1
X
X
L
L
X
X
X
X
D
2
X
X
L
L
X
X
X
X
D
3
X
X
L
L
H
H
X
X
Q
0
L
L
L
L
Q
1
L
L
L
L
Q
n
= D
n
Q
n
= D
n
count up
count down
Q
2
L
L
L
L
Q
3
L
L
L
L
TC
U
H
H
H
H
L
H
H
(2)
H
TC
D
L
H
L
H
H
H
H
H
(3)
reset (clear)
H
H
L
L
L
L
L
L
X
X
L
L
L
L
H
H
parallel load
count up
count down
Fig.4 Functional diagram.
相關(guān)PDF資料
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74HCT192 Presettable synchronous BCD decade up/down counter
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