74LVX4245 데이터 시트보기 (PDF) - STMicroelectronics

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74LVX4245

OCTAL DUAL SUPPLY BUS TRANSCEIVER

STMicroelectronics 

74LVX4245

Table 10: Capacitive Characteristics

Test Condition

Value

Symbol Parameter

CINA

CI/O

CPD

CPD

Input

Capacitance

Input/Output

Capacitance

Dynamic Low

Level Quiet

Output (note 1)

A to B

Dynamic Low

Level Quiet

Output (note 1)

B to A

VCCA VCCB

(V) (V)

open open

3.3 5.0

3.3 5.0

3.3 5.0

TA = 25 °C

-40 to 85 °C -55 to 125°C Unit

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

4.5 10

10

10 V

10

V

55

V

40

V

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 current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/8 (per circuit)

Figure 3: Test Circuit

tPLH, tPHL

tPZLH, tPLZ

tPZH, tPHZ

TEST

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

RL = R1 = 500Ω or equivalent

RT = ZOUT of pulse generator (typically 50Ω)

6/13

SWITCH

Open

2VCC

Open

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