SN54AHC257, SN74AHC257

QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS

WITH 3-STATE OUTPUTS

SCLS349C – MAY 1996 – REVISED JULY 1998

5

POST OFFICE BOX 655303

switching characteristics over recommended operating free-air temperature range,

FROM

TO

LOAD

SN54AHC257

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

LOAD

CAPACITANCE

TA = 25°C

MIN

MAX

UNIT

(INPUT)

(OUTPUT)

CAPACITANCE

MIN

TYP

MAX

MIN

MAX

tPLH*

AorB

Y

CL =15 pF

ns

tPHL*

A or B

Y

CL = 15 pF

ns

tPLH*

A/B

Y

CL =15 pF

ns

tPHL*

A/B

Y

CL = 15 pF

ns

tPZH*

OE

Y

CL =15 pF

ns

tPZL*

OE

Y

CL = 15 pF

ns

tPHZ*

OE

Y

CL =15 pF

ns

tPLZ*

OE

Y

CL = 15 pF

ns

tPLH

AorB

Y

CL =50 pF

ns

tPHL

A or B

Y

CL = 50 pF

ns

tPLH

A/B

Y

CL =50 pF

ns

tPHL

A/B

Y

CL = 50 pF

ns

tPZH

OE

Y

CL =50 pF

ns

tPZL

OE

Y

CL = 50 pF

ns

tPHZ

OE

Y

CL =50 pF

ns

tPLZ

OE

Y

CL = 50 pF

ns

* On products compliant to MIL-PRF-38535, this parameter is not production tested.

switching characteristics over recommended operating free-air temperature range,

FROM

TO

LOAD

SN74AHC257

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

LOAD

CAPACITANCE

TA = 25°C

MIN

MAX

UNIT

(INPUT)

(OUTPUT)

CAPACITANCE

MIN

TYP

MAX

MIN

MAX

tPLH

AorB

Y

CL =15 pF

ns

tPHL

A or B

Y

CL = 15 pF

ns

tPLH

A/B

Y

CL =15 pF

ns

tPHL

A/B

Y

CL = 15 pF

ns

tPZH

OE

Y

CL =15 pF

ns

tPZL

OE

Y

CL = 15 pF

ns

tPHZ

OE

Y

CL =15 pF

ns

tPLZ

OE

Y

CL = 15 pF

ns

tPLH

AorB

Y

CL =50 pF

ns

tPHL

A or B

Y

CL = 50 pF

ns

tPLH

A/B

Y

CL =50 pF

ns

tPHL

A/B

Y

CL = 50 pF

ns

tPZH

OE

Y

CL =50 pF

ns

tPZL

OE

Y

CL = 50 pF

ns

tPHZ

OE

Y

CL =50 pF

ns

tPLZ

OE

Y

CL = 50 pF

ns