54AC16640, 74AC16640

16BIT BUS TRANSCEIVERS

WITH 3STATE OUTPUTS

SCAS240A − JULY 1990 − REVISED APRIL 1996

4

POST OFFICE BOX 655303

POST OFFICE BOX 1443

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

otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

TA = 25°C

54AC16640

74AC16640

UNIT

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

3 V

2.9

2.9

2.9

IOH = −50 µA

4.5 V

4.4

4.4

4.4

IOH = −50 µA

5.5 V

5.4

5.4

5.4

VOH

IOH = −4 mA

3 V

2.58

2.48

2.48

V

VOH

IOH = −24 mA

4.5 V

3.94

3.8

3.8

V

IOH = −24 mA

5.5 V

4.94

4.8

4.8

IOH = −75 mA†

5.5 V

3.85

3.85

3 V

0.1

0.1

0.1

IOL = 50 µA

4.5 V

0.1

0.1

0.1

IOL = 50 µA

5.5 V

0.1

0.1

0.1

VOL

IOL = 12 mA

3 V

0.36

0.44

0.44

V

VOL

IOL = 24 mA

4.5 V

0.36

0.44

0.44

V

IOL = 24 mA

5.5 V

0.36

0.44

0.44

IOL = 75 mA†

5.5 V

1.65

1.65

II

Control inputs

VI = VCC or GND

5.5 V

±0.1

±1

±1

µA

IOZ‡

A or B ports

VO = VCC or GND

5.5 V

±0.5

±5

±5

µA

ICC

VI = VCC or GND,

IO = 0

5.5 V

8

80

80

µA

Ci

Control inputs

VI = VCC or GND

5 V

4.5

pF

Cio

A or B ports

VO = VCC or GND

5 V

16

pF

† Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.

‡ For I/O ports, the parameter IOZ includes the input leakage current.

switching characteristics over recommended operating free-air temperature range,

PARAMETER

FROM

TO

TA = 25°C

54AC16640

74AC16640

UNIT

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

tPLH

A or B

B or A

2.2

6.9

9.1

2.2

10

2.2

10

ns

tPHL

A or B

B or A

3

8.5

11

3

11.9

3

11.9

ns

tPZH

OE

A or B

3

8.2

11

3

12.3

3

12.3

ns

tPZL

OE

A or B

3.9

10.9

14

3.9

15.5

3.9

15.5

ns

tPHZ

OE

A or B

5.1

8.3

10.6

5.1

11.2

5.1

11.2

ns

tPLZ

OE

A or B

4.3

7.8

10.1

4.3

10.6

4.3

10.6

ns

switching characteristics over recommended operating free-air temperature range,

PARAMETER

FROM

TO

TA = 25°C

54AC16640

74AC16640

UNIT

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

tPLH

A or B

B or A

1.8

4.7

1.8

7.3

1.8

7.3

ns

tPHL

A or B

B or A

2.6

5.7

2.6

8.6

2.6

8.6

ns

tPZH

OE

A or B

2.4

5.6

2.4

8

2.4

8

ns

tPZL

OE

A or B

3

6.6

3

9.9

3

9.9

ns

tPHZ

OE

A or B

5

7.5

5

9.9

5

9.9

ns

tPLZ

OE

A or B

4.1

6.5

4.1

9

4.1

9

ns

PRODUCT PREVIEW information concerns products in the formative or

design phase of development. Characteristic data and other

specifications are design goals. Texas Instruments reserves the right to

change or discontinue these products without notice.