MM74HCT273N datasheet(4/8 Pages) FAIRCHILD

Part #	MM74HCT273N

Description	Octal D-Type Flip-Flop with Clear

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

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AC Electrical Characteristics

VCC

5V, TA 25qC, CL 15 pF, tr tf 6 ns

AC Electrical Characteristics

VCC

5.0V

r 10%, CL 50 pF, tr tf 6 ns unless otherwise specified

Note 5: CPD determines the no load dynamic power consumption, PD CPD VCC

2 f I

CC VCC, and the no load dynamic current consumption,

IS CPD VCC

2 f I

CC.

Symbol

Parameter

Conditions

Typ

Guaranteed

Units

Limits

fMAX

Maximum Operating Frequency

68

30

MHz

tPHL, tPLH

Maximum Propagation Delay from Clock to Q

18

30

ns

tPHL, tPLH

Maximum Propagation Delay from Clear to Q

21

30

ns

tREM

Minimum Removal Time, Clear to Clock

15

ns

tS

Minimum Set-Up Time D to Clock

6

20

ns

tH

Minimum Hold Time Clock to D

35

ns

tW

Minimum Pulse Width Clock or Clear

10

16

ns

Symbol

Parameter

Conditions

TA 25qCTA 40qC to 85qCTA 55qC to 125qCUnits

Typ

Guaranteed Limits

fMAX

Maximum Operating

68

27

21

18

MHz

Frequency

tPHL, tPLH Maximum Propagation

22

37

46

56

ns

Delay from Clock to Q

tPHL, tPLH Maximum Propagation

25

35

44

52

ns

Delay from Clear to Q

tREM

Minimum Removal

15

6

7

ns

Time Clear to Clock

tS

Minimum Set-Up Time

6

20

25

30

ns

D to Clock

tH

Minimum Hold Time

35

5

ns

Clock to D

tW

Minimum Pulse Width

10

16

25

30

ns

Clock or Clear

tr, tf

Maximum Input Rise

500

ns

and Fall Time, Clock

tTHL, tTLH Maximum Output Rise

11

15

19

22

ns

and Fall Time

CPD

Power Dissipation

(Per Flip-Flop)

50

pF

Capacitance (Note 5)

CIN

Maximum Input

6

10

pF

Capacitance

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MM74HCT273N Datasheet(PDF) 4 Page - Fairchild Semiconductor

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