SN54LVTH543, SN74LVTH543

3.3V ABT OCTAL REGISTERED TRANSCEIVERS

WITH 3STATE OUTPUTS

SCBS704F − AUGUST 1997 − REVISED OCTOBER 2003

6

POST OFFICE BOX 655303

timing requirements over recommended operating free-air temperature range (unless otherwise

noted) (see Figure 1)

SN54LVTH543

SN74LVTH543

VCC = 3.3 V

± 0.3 V

VCC = 2.7 V

VCC = 3.3 V

± 0.3 V

VCC = 2.7 V

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

tw

Pulse duration,

LEAB or LEBA low

3.3

3.3

3.3

3.3

ns

A or B before

Data high

0.4

0.4

0.4

0.4

tsu

Setup time

A or B before

LEAB or LEBA

↑

Data low

1

1.5

1

1.5

ns

tsu

Setup time

A or B before

Data high

0.2

0.2

0.2

0.2

ns

A or B before

CEAB or CEBA

↑

Data low

0.7

1.2

0.7

1.2

A or B after

Data high

1.5

0.6

1.5

0.6

th

Hold time

A or B after

LEAB or LEBA

↑

Data low

1.3

1.5

1.3

1.5

ns

th

Hold time

A or B after

Data high

1.6

0.5

1.6

0.5

ns

A or B after

CEAB or CEBA

↑

Data low

1.4

1.6

1.4

1.6

(unless otherwise noted) (see Figure 1)

SN54LVTH543

SN74LVTH543

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 3.3 V

± 0.3 V

VCC = 2.7 V

VCC = 3.3 V

± 0.3 V

VCC = 2.7 V

UNIT

(INPUT)

(OUTPUT)

MIN

MAX

MIN

MAX

MIN

TYP†

MAX

MIN

MAX

tPLH

A or B

B or A

1.2

3.9

4.5

1.3

2.5

3.7

4.3

ns

tPHL

A or B

B or A

1.2

3.9

4.5

1.3

2.5

3.7

4.3

ns

tPLH

LE

A or B

1.2

5.1

6.1

1.3

2.9

4.7

5.9

ns

tPHL

LE

A or B

1.2

5.1

6.1

1.3

2.9

4.7

5.9

ns

tPZH

OE

A or B

1

5.1

6.4

1.1

2.9

4.9

6.2

ns

tPZL

OE

A or B

1

5.1

6.4

1.1

3.2

4.9

6.2

ns

tPHZ

OE

A or B

1.9

5.6

6.2

2

3.4

5.3

5.9

ns

tPLZ

OE

A or B

1.9

5.6

6.2

2

3.7

5.3

5.9

ns

tPZH

CE

A or B

1.2

5.5

7

1.3

3.2

5.3

6.8

ns

tPZL

CE

A or B

1.2

5.5

7

1.3

3.5

5.3

6.8

ns

tPHZ

CE

A or B

2.2

5.7

6.2

2.3

3.8

5.4

5.9

ns

tPLZ

CE

A or B

2.2

5.7

5.9

2.3

3.9

5.4

5.6

ns

† All typical values are at VCC = 3.3 V, TA = 25°C.

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.