M74HC27 datasheet(4/9 Pages) STMICROELECTRONICS

No. de pieza	M74HC27

Descripción Electrónicos	TRIPLE 3-INPUT NOR GATE

PDF	9 Pages

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Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

Página de inicio	http://www.st.com

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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

2.0

110

4.5

151922

6.0

131619

tPLH

tPHL

Propagation

Delay Time

2.0

100

115

4.5

6.0

141720

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/3 (per Gate)

SWITCHING CHARACTERISTICS TEST CIRCUIT

INPUT WAVEFORM IS THE SAVE AS THAT IN CASE OF SWITCHING CHARACTERISTICS TEST.

TEST CIRCUIT ICC (Opr.)

M54/M74HC27

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