74ACT245 datasheet(4/9 Pages) STMICROELECTRONICS

部品番号	74ACT245

部品情報	OCTAL BUS TRANSCEIVER 3-STATE

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74ACT245

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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/16 (per

circuit)

TEST CIRCUIT

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

RL = R1 = 500Ω or equivalent

RT = ZOUT of pulse generator (typically 50Ω)

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

pF

CI/O

I/O Capacitance

5.0

10

pF

CPD

Power Dissipation

Capacitance (note

1)

5.0

fIN = 10MHz

23

pF

TEST

SWITCH

tPLH, tPHL

Open

tPZL, tPLZ

2VCC

tPZH, tPHZ

Open

同様の部品番号 - 74ACT245

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