74LCX139 データシートの表示（PDF） - STMicroelectronics

部品番号

コンポーネント説明

メーカー

74LCX139

LOW VOLTAGE CMOS DUAL 2 TO 4 DECODER/DEMULTIPLEXER

STMicroelectronics 

74LCX139

CAPACITIVE CHARACTERISTICS

Test Condition

Value

Symbol

Parameter

VCC

(V)

TA = 25 °C

Unit

Min. Typ. Max.

CIN

Input Capacitance

3.3

VIN = 0 to VCC

6

pF

CPD Power Dissipation Capacitance

3.3

(note 1)

fIN = 10MHz

VIN = 0 or VCC

26

pF

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 gate)

TEST CIRCUIT

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

RL = 500Ω or equivalent

RT = ZOUT of pulse generator (typically 50Ω)

5/9

Share Link: