M54HC139 datasheet(4/9 Pages) STMICROELECTRONICS

No. de pieza	M54HC139

Descripción Electrónicos	M54HC138F1R M74HC138M1R M74HC138B1R M74HC138C1R

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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

(A, B - Y)

2.0

130

165

195

4.5

6.0

tPLH

tPHL

Propagation

Delay Time

(G - Y)

2.0

110

140

165

4.5

6.0

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

TEST CIRCUIT ICC (Opr.)

INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF

SWITCHING CHARACTERISTICS TEST.

SWITCHING CHARACTERISTICS TEST CIR-

CUIT

M54/M74HC139

4/9

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