74LVX139M 查看數據表（PDF） - STMicroelectronics

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74LVX139M

LOW VOLTAGE CMOS DUAL 2 TO 4 DECODER/DEMULTIPLEXER

STMicroelectronics 

74LVX139

CAPACITIVE CHARACTERISTICS

Test Condition

Value

Symbol

Parameter

VCC

(V)

TA = 25°C

-40 to 85°C -55 to 125°C Unit

Min. Typ. Max. Min. Max. Min. Max.

CIN Input Capacitance 3.3

5

pF

CPD Power Dissipation

Capacitance

3.3

fIN = 10MHz

13

pF

(note 1)

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

Decoder)

TEST CIRCUIT

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

RT = ZOUT of pulse generator (typically 50Ω)

5/9

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