74VHC257M データシートの表示（PDF） - STMicroelectronics

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74VHC257M

QUAD 2 CHANNEL MULTIPLEXER (3-STATE)

STMicroelectronics 

74VHC257

AC ELECTRICAL CHARACTERISTICS (Input tr = tf = 3ns)

Test Condition

Value

Symbol

Parameter

VCC CL

(V) (pF)

tPLH Propagation Delay 3.3(*) 15

tPHL Time A, B to Y

3.3(*) 50

5.0(**) 15

5.0(**) 50

tPLH Propagation Delay 3.3(*) 15

tPHL Time

SELECT to Y

3.3(*) 50

5.0(**) 15

5.0(**) 50

tPZL

tPZH

Output Enable

Time

3.3(*) 15

3.3(*) 50

5.0(**) 15

5.0(**) 50

tPLZ

tPHZ

Output Disable

Time

3.3(*) 50

5.0(**) 50

(*) Voltage range is 3.3V ± 0.3V

(**) Voltage range is 5.0V ± 0.5V

RL = 1KΩ

RL = 1KΩ

RL = 1KΩ

RL = 1KΩ

RL = 1KΩ

RL = 1KΩ

TA = 25°C

-40 to 85°C -55 to 125°C Unit

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

5.8 9.3 1.0 11.0 1.0 11.0

8.3 12.8 1.0 14.5 1.0 14.5

ns

3.6 5.9 1.0 7.0 1.0 7.0

5.1 7.9 1.0 9.0 1.0 9.0

7.0 11.0 1.0 13.0 1.0 13.0

9.5 14.5 1.0 16.5 1.0 16.5

ns

4.0 6.8 1.0 8.0 1.0 8.0

5.5 8.8 1.0 10.0 1.0 10.0

6.7 10.5 1.0 12.5 1.0 12.5

9.2 14.0 1.0 16.0 1.0 16.0

ns

3.6 6.8 1.0 8.0 1.0 8.0

5.1 8.8 1.0 10.0 1.0 10.0

8.6 12.0 1.0 13.5 1.0 13.5

ns

5.7 7.9 1.0 9.0 1.0 9.0

CAPACITIVE CHARACTERISTICS

Test Condition

Value

Symbol

Parameter

TA = 25°C

-40 to 85°C -55 to 125°C Unit

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

CIN Input Capacitance

6 10

10

10 pF

COUT

Output

Capacitance

8

pF

CPD Power Dissipation

Capacitance

18

pF

(note 1)

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/4 (per

channel)

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