74VHC273 データシートの表示（PDF） - STMicroelectronics

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74VHC273

OCTAL D-TYPE FLIP FLOP WITH CLEAR

STMicroelectronics 

74VHC273

Figure 2: Input Equivalent Circuit

Table 3: Truth Table

CLEAR

L

H

H

H

INPUTS

D

X

L

H

X

X : Don’t Care

Figure 3: Logic Diagram

Table 2: Pin Description

PIN N°

1

2, 5, 6, 9, 12,

15, 16,19

3, 4, 7, 8, 13,

14, 17, 18

11

10

20

SYMBOL

CLEAR

Q0 to Q7

NAME AND FUNCTION

Asynchronous Master

Reset (Active LOW)

Flip-Flop Outputs

D0 to D7 Data Inputs

CLOCK

GND

VCC

Clock Input (LOW-to-HIGH

Edge Triggered)

Ground (0V)

Positive Supply Voltage

OUTPUT

FUNCTION

B

Q

X

L

CLEAR

L

H

Qn

NO CHANGE

This logic diagram has not be used to estimate propagation delays

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