54AC16543, 74AC16543

16BIT REGISTERED TRANSCEIVERS

WITH 3STATE OUTPUTS

SCAS125B − MARCH 1990 − REVISED APRIL 1996

6

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

54AC16543

74AC16543

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

IOL = −24 mA

4.5 V

3.94

3.8

3.8

V

IOL = −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

3

pF

Cio

A or B ports

VO = VCC or GND

5 V

11.5

pF

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

timing requirements over recommended operating free-air temperature range,

TA = 25°C

54AC16543

74AC16543

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

UNIT

tw

Pulse duration, LEAB or LEBA low

5

5

5

ns

tsu

Setup time, data before LEAB or LEBA

↑

1

1

1

ns

th

Hold time, data after LEAB or LEBA

↑

3.5

3.5

3.5

ns

timing requirements over recommended operating free-air temperature range,

TA = 25°C

54AC16543

74AC16543

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

UNIT

tw

Pulse duration, LEAB or LEBA low

4

4

4

ns

tsu

Setup time, data before LEAB or LEBA

↑

1

1

1

ns

th

Hold time, data after LEAB or LEBA

↑

3

3

3

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.