參數(shù)資料
型號(hào)： 933714720653
廠商： NXP SEMICONDUCTORS
元件分類： 計(jì)數(shù)器
英文描述： HC/UH SERIES, ASYN NEGATIVE EDGE TRIGGERED 3-BIT UP DECADE COUNTER, PDSO16
封裝： SOT-109, SO-16
文件頁(yè)數(shù)： 6/11頁(yè)
文件大?。?/td> 132K
代理商： 933714720653
December 1990
4
Philips Semiconductors
Product specication
Dual decade ripple counter
74HC/HCT390
Fig.4 Functional diagram.
BCD COUNT SEQUENCE
FOR 1/2 THE “390”
Notes
1. Output Q0 connected to nCP1
with counter input on nCP0.
H = HIGH voltage level
L = LOW voltage level
COUNT
OUTPUTS
Q0
Q1
Q2
Q3
0
LLLL
1
H
LLL
2L
H
L
3
HHL
L
4
LLH
L
5H
L
H
L
6
L
HHL
7
HHHL
8
LLLH
9
H
LLH
BI-QUINARY COUNT SEQUENCE
FOR 1/2 THE “390”
Note
1. Output Q3 connected to nCP0
with counter input on nCP1.
COUNT
OUTPUTS
Q0
Q1
Q2
Q3
0
LLLL
1L
H
L
2
LLH
L
3
L
HHL
4
LLLH
5
H
LLL
6
HHL
L
7H
L
H
L
8
HHHL
9
H
LLH
Fig.5 Logic diagram (one counter).
相關(guān)PDF資料
PDF描述
935189330112 HC/UH SERIES, ASYN NEGATIVE EDGE TRIGGERED 3-BIT UP DECADE COUNTER, PDSO16
935189930118 HCT SERIES, ASYN NEGATIVE EDGE TRIGGERED 3-BIT UP DECADE COUNTER, PDSO16
935189060112 HC/UH SERIES, ASYN NEGATIVE EDGE TRIGGERED 3-BIT UP DECADE COUNTER, PDSO16
935189060118 HC/UH SERIES, ASYN NEGATIVE EDGE TRIGGERED 3-BIT UP DECADE COUNTER, PDSO16
935189930112 HCT SERIES, ASYN NEGATIVE EDGE TRIGGERED 3-BIT UP DECADE COUNTER, PDSO16
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