SN54LVC257A, SN74LVC257A

QUADRUPLE 2LINE TO 1LINE DATA SELECTORS/MULTIPLEXERS

WITH 3STATE OUTPUTS

SCAS294N − JANUARY 1993 − REVISED OCTOBER 2003

4

POST OFFICE BOX 655303

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

SN54LVC257A

SN74LVC257A

UNIT

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP†

MAX

MIN

TYP†

MAX

UNIT

IOH = −100 µA

1.65 V to 3.6 V

VCC−0.2

IOH = −100 µA

2.7 V to 3.6 V

VCC−0.2

IOH = −4 mA

1.65 V

1.2

VOH

IOH = −8 mA

2.3 V

1.7

V

VOH

IOH = −12 mA

2.7 V

2.2

2.2

V

IOH = −12 mA

3 V

2.4

2.4

IOH = −24 mA

3 V

2.2

2.2

IOL = 100 A

1.65 V to 3.6 V

0.2

IOL = 100 µA

2.7 V to 3.6 V

0.2

VOL

IOL = 4 mA

1.65 V

0.45

V

VOL

IOL = 8 mA

2.3 V

0.7

V

IOL = 12 mA

2.7 V

0.4

0.4

IOL = 24 mA

3 V

0.55

0.55

II

VI = 5.5 V or GND

3.6 V

±5

±5

µA

IOZ

VO = VCC or GND

3.6 V

±15

±10

µA

ICC

VI = VCC or GND, IO = 0

3.6 V

10

10

µA

∆ICC

One input at VCC − 0.6 V,

Other inputs at VCC or GND

2.7 V to 3.6 V

500

500

µA

Ci

VI = VCC or GND

3.3 V

5

5

pF

Co

VO = VCC or GND

3.3 V

5

5

pF

† All typical values are at VCC = 3.3 V, TA = 25°C.

switching characteristics over recommended operating free-air temperature range (unless

otherwise noted) (see Figure 1)

SN54LVC257A

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 2.7 V

VCC = 3.3 V

± 0.3 V

UNIT

(INPUT)

(OUTPUT)

MIN

MAX

MIN

MAX

tpd

A or B

Y

5.4

1

4.6

ns

tpd

A/B

Y

7.5

1

6.4

ns

ten

OE

Y

6.7

1

5.6

ns

tdis

OE

Y

4.7

0.5

4.3

ns

tsk(o)

1

ns