MM74HCT109 datasheet(3/4 Pages) NSC

Part #	MM74HCT109

Description	Dual J-K Flip-Flops with Preset and Clear

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Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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AC Electrical Characteristics VCCe5V TAe25 C CLe15 pF tretfe6ns

Symbol

Parameter

Conditions

Typ

Guaranteed

Units

Limit

fMAX

Maximum Operating

50

30

MHz

Frequency

tPHL tPLH Maximum Propagation

18

30

ns

Delay from Clock to Q or Q

tPHL tPLH Maximum Propagation

18

30

ns

Delay from Preset or Clear to Q or Q

tREM

Minimum Removal Time

20

ns

Preset or Clear to Clock

tS

Minimum Setup Time

10

20

ns

JorK Clock

tH

Minimum Hold Time

b

30

ns

Clock to J or K

tW

Minimum Pulse Width

8

16

ns

Clock Preset or Clear

AC Electrical Characteristics VCCe50V g10% CLe50 pF tretfe6 ns (unless otherwise specified)

TAe25 C

74HCT

54HCT

Symbol

Parameter

Conditions

TAeb40 to 85 CTAeb55 to 125 C

Units

Typ

Guaranteed Limits

fMAX

Maximum Operating

27

22

18

MHz

Frequency

tPHL tPLH

Maximum Propagation

22

35

44

52

ns

Delay from Clock to

QorQ

tPHL tPLH

Maximum Propagation

22

35

44

52

ns

Delay from Preset

or Clear to Q or Q

tREM

Minimum Removal Time

20

25

30

ns

Preset or Clear to Clock

tS

Minimum Setup Time

10

20

25

30

ns

JorK to Clock

tH

Minimum Hold Time

b

30

0

ns

Clock to J or K

tW

Minimum Pulse Width

16

20

24

ns

Clock Preset or Clear

tr tf

Maximum Input Rise and

500

ns

Fall Time

tTHL tTLH

Maximum Output

15

19

22

ns

Rise and Fall Time

CPD

Power Dissipation

(per flip-flop)

35

pF

Capacitance (Note 5)

CIN

Maximum Input

5

10

pF

Capacitance

Note 5

CPD determines the no load dynamic power consumption PDeCPD VCC2 faICC VCC and the no load dynamic current consumption ISeCPD VCC faICC

3

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MM74HCT109 Datasheet(PDF) 3 Page - National Semiconductor (TI)

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