U74LVC273

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

2 of 5

www.unisonic.com.tw

QW-R126-057 .A

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PIN CONFIGURATION

1

2

3

4

5

6

7

17

16

15

14

13

12

11

GND

MR

Q0

D0

D1

Q1

Q2

Q6

Q5

D5

D4

Q4

CP

8

9

10

D3

Q3

D2

20

19

18

D7

Q7

D6

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FUNCTION TABLE

MODE

INPUTS

OUTPUT

INPUT( MR )

CP

Dn

Qn

Reset (clear)

L

X

X

L

Load “ 1 ”

H

↑

h

H

Load “ 0 ”

H

↑

l

L

H = High voltage level；L = Low voltage level；X = Don’t care；↑= LOW-to-HIGH clock transition

h = HIGH voltage level one set-up time prior to the LOW-to-HIGH CP transition

l = LOW voltage level one set-up time prior to the LOW-to-HIGH CP transition

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LOGIC SYMBOL