SN74AHC245Q

OCTAL BUS TRANSCEIVER

WITH 3-STATE OUTPUTS

SGDS018 – FEBRUARY 2002

5

POST OFFICE BOX 655303

switching

characteristics

over

recommended

operating

free-air

temperature

range,

PARAMETER

FROM

TO

LOAD

TA = 25°C

MIN

MAX

UNIT

PARAMETER

(INPUT)

(OUTPUT)

CAPACITANCE

MIN

TYP

MAX

MIN

MAX

UNIT

tPLH

AorB

BorA

CL =15 pF

4

5.5

1

6.5

ns

tPHL

A or B

B or A

CL = 15 pF

4

5.5

1

6.5

ns

tPZH

OE

AorB

CL =15 pF

5.8

8.5

1

10

ns

tPZL

OE

A or B

CL = 15 pF

5.8

8.5

1

10

ns

tPHZ

OE

AorB

CL =15 pF

5.6

7.8

1

9.2

ns

tPLZ

OE

A or B

CL = 15 pF

5.6

7.8

1

9.2

ns

tPLH

AorB

BorA

CL =50 pF

5.5

7.5

1

8.5

ns

tPHL

A or B

B or A

CL = 50 pF

5.5

7.5

1

8.5

ns

tPZH

OE

AorB

CL =50 pF

7.3

10.6

1

12

ns

tPZL

OE

A or B

CL = 50 pF

7.3

10.6

1

12

ns

tPHZ

OE

AorB

CL =50 pF

7

9.7

1

11

ns

tPLZ

OE

A or B

CL = 50 pF

7

9.7

1

11

ns

PARAMETER

MIN

TYP

MAX

UNIT

VOL(P)

Quiet output, maximum dynamic VOL

0.9

V

VOL(V)

Quiet output, minimum dynamic VOL

–0.9

V

VOH(V)

Quiet output, minimum dynamic VOH

4.3

V

VIH(D)

High-level dynamic input voltage

3.5

V

VIL(D)

Low-level dynamic input voltage

1.5

V

NOTE 4: Characteristics are for surface-mount packages only.

PARAMETER

TEST CONDITIONS

TYP

UNIT

Cpd

Power dissipation capacitance

No load,

f = 1 MHz

14

pF