74LVC373AMTR datasheet(5/13 Pages) STMICROELECTRONICS

5 / 13 page

74LVC373A

5/13

Table 9: 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/n (per circuit)

Figure 3: Test Circuit

RT = ZOUT of pulse generator (typically 50Ω)

Table 10: Test Circuit And Waveform Symbol Value

Symbol

Parameter

Test Condition

Value

Unit

VCC

(V)

TA = 25 °C

Min.

Typ.

Max.

CIN

Input Capacitance

4pF

CPD

Power Dissipation Capacitance

(note 1)

1.8

fIN = 10MHz

2.5

3.3

Symbol

VCC

1.65 to 1.95V

2.3 to 2.7V

2.7V

3.0 to 3.6V

30pF

50pF

RL = R1

1000

Ω

500

Ω

500

Ω

500

Ω

2 x VCC

VIH

VCC

2.7V

3.0V

VCC/2

1.5V

VOH

VCC

3.0V

3.5V

VOL + 0.15V

VOL + 0.3V

VOH - 0.15V

VOH - 0.3V

tr = tr

<2.0ns

<2.5ns

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