74VHCT139AM datasheet(4/8 Pages) STMICROELECTRONICS

Nome de Peças	74VHCT139AM

Descrição Electrónicos	DUAL 2 TO 4 DECODER/DEMULTIPLEXER

PDF	8 Pages

Scroll/Zoom	100%

Fabricante Electrônico	STMICROELECTRONICS [STMicroelectronics]

Página de início	http://www.st.com

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CAPACITIVE CHARACTERISTICS

Symb ol

Parameter

T est Cond ition s

Val ue

Un it

TA =25

-40 to 85

Min.

Typ .

Max.

Min .

Max.

CIN

Input Capacitance

CPD

Power Dissipation

Capacitance (note 1)

1) CPD isdefined as the value of the IC’sinternal equivalent capacitance which is calculated fromthe operating current consumption without load. (Referto

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

• VCC • fIN +ICC/2 (per Decoder)

AC ELECTRICAL CHARACTERISTICS (Input tr =tf =3 ns)

Symb ol

Parameter

Test Co nditi on

Val ue

Un it

VCC

(V)

(pF )

TA =25

-40 to 85

Min.

Typ .

Max.

Min .

Max.

tPLH

tPHL

Propagation Delay

Time

A, B, to Y

5.0

(*)

7.2

11.0

1.0

13.0

5.0

(*)

9.7

14.5

1.0

16.5

tPLH

tPHL

Propagation Delay

Time

Gto Y

5.0

(*)

6.4

9.2

1.0

11.0

5.0

(*)

8.9

12.7

1.0

14.5

(*) Voltage range is 5V

± 0.5V

TEST CIRCUIT

CL = 15/50 pF or equivalent (includes jig and probe capacitance)

RT =ZOUT of pulse generator (typically 50

Ω)

74VHCT139A

4/8

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