M74HCT174 datasheet(5/11 Pages) STMICROELECTRONICS

Part #	M74HCT174

Description	HEX D-TYPE FLIP FLOP WITH CLEAR

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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5 / 11 page

AC ELECTRICAL CHARACTERISTICS (CL =50 pF, Input tr =tf =6 ns)

Symbol

Parameter

Test Conditions

Value

Unit

VCC

(V)

TA =25

oC

54HC and 74HC

-40 to 85

oC

74HC

-55 to 125

oC

54HC

Min.

Typ.

Max.

Min.

Max.

Min.

Max.

tTLH

tTHL

Output Transition

Time

4.5

8

151922

ns

tPLH

tPHL

Propagation

Delay Time

(CK - Q)

4.5

18

28

35

ns

tPHL

Propagation

Delay Time

(CLR - Q)

4.5

18

28

35

42

ns

fMAX

Maximum Clock

Frequency

4.5

30

54

24

MHz

tW(H)

tW(L)

Minimum Pulse

Width

(CLOCK)

4.5

8

151922

ns

tW(L)

Minimum Pulse

Width

(CLR)

4.5

8

151922

ns

ts

Minimum Set-up

Time

4.5

2

101315

ns

th

Minimum Hold

Time

4.5

5

6

8

ns

tREM

Minimum

Removal Time

4.5

5

ns

CIN

Input Capacitance

5

10

pF

CPD (*)

Power Dissipation

Capacitance

68

pF

(*) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load.

(Refer to Test Circuit). Average operting current can be obtained by the following equation. ICC(opr) = CPD

•VCC •fIN +ICC/6 (per FLIP/FLOP)

And the total CPD when N pcs of FLIP FLOP operate can be gained by the following equation: CPD (total)= 38 + 15 x n

M54/M74HCT174

5/11

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