M54HC75D 查看數據表（PDF） - STMicroelectronics

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M54HC75D

RAD HARD 4 BIT D TYPE LATCH

STMicroelectronics 

M54HC75

Table 7: Capacitive Characteristics

Test Condition

Value

Symbol

Parameter

VCC

(V)

CIN Input Capacitance 5.0

CPD Power Dissipation

Capacitance (note 5.0

1)

TA = 25°C

-40 to 85°C -55 to 125°C Unit

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

5 10

10

10 pF

30

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

Figure 4: Test Circuit

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

RT = ZOUT of pulse generator (typically 50Ω)

5/10

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