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74VHCT257A

QUAD 2 CHANNEL MULTIPLEXER (3-STATE)

STMicroelectronics 

74VHCT257A

DC SPECIFICATIONS

Symb ol

Parameter

VIH High Level Input

Voltage

VIL Low Level Input

Voltage

VOH High Level Output

Voltage

VOL Low Level Output

Voltage

IOZ High Impedance

Output Leakage

Current

II Input Leakage Current

ICC Quiescent Supply

Current

∆ICC Additional Worst Case

Supply Current

IOPD Output Leakage

Current

Test Conditions

V CC

( V)

4.5 to 5.5

4.5 to 5.5

4.5

4.5

4.5

4.5

4.5 to 5.5

IO=-50 µA

IO=-8 mA

IO=50 µA

IO=8 mA

VI = VIH or VIL

VO = 0V to 5.5V

0 to 5.5

5.5

VI = 5.5V or GND

VI = VCC or GND

5.5

One Input at 3.4V,

other input at VCC or

GND

0

VOUT = 5.5V

Value

TA = 25 oC

Min. Typ. Max.

2

-40 to 85 oC

Min . Max.

2

0.8

0.8

4.4 4.5

4.4

3.94

3.8

0.0 0.1

0.1

0.36

0.44

±0.25

±2.5

±0.1

±1.0

4

40

1.35

1.5

0.5

5.0

Un it

V

V

V

V

µA

µA

µA

mA

µA

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

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Parameter

tPLH Propagation Delay

tPHL Time A, B to Y

tPLH Propagation Delay

tPHL Time SELECT to Y

tPZL Output Enable Time

tPZH

tPLZ Output Disable Time

tPHZ

(*) Voltage range is 5V ± 0.5V

Test Condition

V CC

CL

( V)

(pF)

5.0(*)

15

5.0(*)

50

5.0(*)

15

5.0(*)

50

5.0(*)

15

5.0(*)

50

5.0(*)

50

Value

TA = 25 oC

Min. Typ. Max.

5.8 9.3

8.3 12.8

7.0 11.0

9.5 14.5

6.7 10.5

9.2 14.0

8.6 12.0

-40 to 85 oC

Min . Max.

1.0 11.0

1.0 14.5

1.0 13.0

1.0 16.5

1.0 12.5

1.0 16.0

1.0 13.5

Unit

ns

ns

ns

ns

4/9

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