M74HCT273 datasheet(5/10 Pages) STMICROELECTRONICS

No. de pieza	M74HCT273

Descripción Electrónicos	OCTAL D TYPE FLIP FLOP WITH CLEAR

PDF	10 Pages

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Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

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

Symbol

Parameter

Test Conditions

Value

Unit

VCC

(V)

TA =25

54HC and 74HC

-40 to 85

74HC

-55 to 125

54HC

Min.

Typ.

Max.

Min.

Max.

Min.

Max.

tTLH

tTHL

Output Transition

Time

4.5

151922

tPLH

tPHL

Propagation

Delay Time

(CLOCK - Q)

4.5

tPLH

tPHL

Propagation

Delay Time

(CLEAR - Q)

4.5

fMAX

Maximum Clock

Frequency

4.5

MHz

CIN

Input Capacitance

CPD (*)

Power Dissipation

Capacitance

(*) 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/8 (per Flip FLop), and the

total CPD when n pcs of Flip Flop operate can be gained by the following equations: CPD (total) = 32 + 11 x n

SWITCHING CHARACTERISTICS TEST WAVEFORM

TEST CIRCUIT ICC (Opr.)

M54/M74HCT273

5/10

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