SN54ABT543A, SN74ABT543A

OCTAL REGISTERED TRANSCEIVERS

WITH 3-STATE OUTPUTS

SCBS157F – JANUARY 1991 – REVISED MAY 1997

5

POST OFFICE BOX 655303

timing requirements over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (see Figure 1)

SN54ABT543A

VCC = 5 V,

TA = 25°C

MIN

MAX

UNIT

MIN

MAX

tw

Pulse duration, LEAB or LEBA low

3.5

3.5

ns

Data before LEAB or LEBA

↑

High

2.5

2.5

t

Setup time

Data before LEAB or LEBA

↑

Low

3

3

ns

tsu

Setup time

Data before CEAB or CEBA

↑

High

2.5

2.5

ns

Data before CEAB or CEBA

↑

Low

3

3

th

Hold time

Data after LEAB or LEBA

↑

1

1

ns

th

Hold time

Data after CEAB or CEBA

↑

1

1

ns

timing requirements over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (see Figure 1)

SN74ABT543A

VCC = 5 V,

TA = 25°C

MIN

MAX

UNIT

MIN

MAX

tw

Pulse duration, LEAB or LEBA low

3.5

3.5

ns

Data before LEAB or LEBA

↑

High

3.5

3.5

t

Setup time

Data before LEAB or LEBA

↑

Low

3

3

ns

tsu

Setup time

Data before CEAB or CEBA

↑

High

3.5

3.5

ns

Data before CEAB or CEBA

↑

Low

3

3

th

Hold time

Data after LEAB or LEBA

↑

0.5

0.5

ns

th

Hold time

Data after CEAB or CEBA

↑

0.5

0.5

ns