SN74AHC245-EP

OCTAL BUS TRANSCEIVER

WITH 3-STATE OUTPUTS

SCLS487A – MAY 2003 – REVISED JUNE 2003

4

POST OFFICE BOX 655303

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

otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

TA = 25°C

MIN

MAX

UNIT

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

MIN

MAX

UNIT

2 V

1.9

2

1.9

IOH = –50 mA

3 V

2.9

3

2.9

VOH

4.5 V

4.4

4.5

4.4

V

IOH = –4 mA

3 V

2.58

2.48

IOH = –8 mA

4.5 V

3.94

3.8

2 V

0.1

0.1

IOL = 50 mA

3 V

0.1

0.1

VOL

4.5 V

0.1

0.1

V

IOL = 4 mA

3 V

0.36

0.5

IOL = 8 mA

4.5 V

0.36

0.5

I

A or B inputs

V

5 5VorGND

5.5 V

±0.1

±1

A

II

OE or DIR

VI = 5.5 V or GND

0 V to 5.5 V

±0.1

±1

mA

IOZ†

VO = VCC or GND,

VI (OE) = VIL or VIH

5.5 V

±0.25

±2.5

mA

ICC

VI = VCC or GND,

IO = 0

5.5 V

4

40

mA

Ci

OE or DIR

VI = VCC or GND

5 V

2.5

10

pF

Cio

A or B inputs

VI = VCC or GND

5 V

4

pF

† The parameter IOZ includes the input leakage current.

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

5.8

8.4

1

10

ns

tPHL

A or B

B or A

CL = 15 pF

5.8

8.4

1

10

ns

tPZH

OE

AorB

CL =15 pF

8.5

13.2

1

15.5

ns

tPZL

OE

A or B

CL = 15 pF

8.5

13.2

1

15.5

ns

tPHZ

OE

AorB

CL =15 pF

8.9

12.5

1

15.5

ns

tPLZ

OE

A or B

CL = 15 pF

8.9

12.5

1

15.5

ns

tPLH

AorB

BorA

CL =50 pF

8.3

11.9

1

13.5

ns

tPHL

A or B

B or A

CL = 50 pF

8.3

11.9

1

13.5

ns

tPZH

OE

AorB

CL =50 pF

11

16.7

1

19

ns

tPZL

OE

A or B

CL = 50 pF

11

16.7

1

19

ns

tPHZ

OE

AorB

CL =50 pF

11.5

15.8

1

18

ns

tPLZ

OE

A or B

CL = 50 pF

11.5

15.8

1

18

ns