M74HC139B1R datasheet(5/9 Pages) STMICROELECTRONICS

No de pièce	M74HC139B1R

Description	DUAL 2 TO 4 DECODER/DEMULTIPLEXER

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Fabricant	STMICROELECTRONICS [STMicroelectronics]

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M74HC139

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CAPACITIVE CHARACTERISTICS

1) 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 operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/2(per circuit)

TEST CIRCUIT

CL = 50pF or equivalent (includes jig and probe capacitance)

RT = ZOUT of pulse generator (typically 50Ω)

WAVEFORM : PROPAGATION DELAY TIMES (f=1MHz; 50% duty cycle)

Symbol

Parameter

Test Condition

Value

Unit

VCC

(V)

TA = 25°C

-40 to 85°C

-55 to 125°C

Min.

Typ.

Max.

Min.

Max.

Min.

Max.

CIN

Input Capacitance

5.0

5

101010

pF

CPD

Power Dissipation

Capacitance (note

1)

5.0

46

pF

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STMicroelectronics	M74HC139B1R	239Kb / 9P	M54HC138F1R M74HC138M1R M74HC138B1R M74HC138C1R

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