參數(shù)資料
型號: 933714600653
廠商: NXP SEMICONDUCTORS
元件分類: 計數(shù)器
英文描述: HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, PDSO16
封裝: SOT-109, SO-16
文件頁數(shù): 6/10頁
文件大?。?/td> 102K
代理商: 933714600653
December 1990
5
Philips Semiconductors
Product specication
Presettable synchronous 4-bit binary
up/down counter
74HC/HCT191
FUNCTION TABLE
TC AND RC FUNCTION TABLE
Notes
1. H = HIGH voltage level
L = LOW voltage level
I
= LOW voltage level one set-up time prior to the LOW-to-HIGH CP transition
X = don’t care
↑ = LOW-to-HIGH CP transition
= one LOW level pulse
= TC goes LOW on a LOW-to-HIGH CP transition
OPERATING MODE
INPUTS
OUTPUTS
PL
U/D
CE
CP
Dn
Qn
parallel load
L
X
L
H
L
H
count up
H
L
I
X
count up
count down
H
I
X
count down
hold (do nothing)
HXHX
X
no change
INPUTS
TERMINAL COUNT STATE
OUTPUTS
U/D
CE
CP
Q0
Q1
Q2
Q3
TC
RC
H
L
H
L
H
L
X
H
L
H
L
H
L
H
L
H
L
H
Fig.4 Functional diagram.
相關(guān)PDF資料
PDF描述
935188600112 HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, PDSO16
935188600118 HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, PDSO16
933715080653 HCT SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, PDSO16
933669460652 HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, PDIP16
933715250653 HCT SERIES, ASYN NEGATIVE EDGE TRIGGERED 14-BIT UP BINARY COUNTER, PDSO16
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