SN54BCT544, SN74BCT544

OCTAL REGISTERED TRANSCEIVERS

WITH 3-STATE OUTPUTS

SCBS039B – NOVEMBER 1988 – REVISED NOVEMBER 1993

5

POST OFFICE BOX 655303

switching characteristics over recommended ranges of supply voltage and operating free-air

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 5 V,

TA = 25°C

SN54BCT544

SN74BCT544

UNIT

(INPUT)

(OUTPUT)

MIN

MAX

MIN

MAX

MIN

MAX

tPLH

AorB

BorA

2.4

7.6

2.4

10.3

2.4

9.7

ns

tPHL

A or B

B or A

3

7.6

3

8.9

3

8.5

ns

tPLH

LEBA

A

3.5

10.3

3.5

14.2

3.5

13.3

ns

tPHL

LEBA

A

4.8

10.2

4.8

12.7

4.8

12.3

ns

tPLH

LEAB

B

3.5

10.3

3.5

14.4

3.5

13.4

ns

tPHL

LEAB

B

4.8

10.3

4.8

12.8

4.8

12.4

ns

tPZH

OE or CE

AorB

3

10.1

3

13.1

3

12.7

ns

tPZL

OE or CE

A or B

5.1

11.8

5.1

14.2

5.1

13.9

ns

tPHZ

OE or CE

AorB

2.8

7.5

2

8.9

2.8

8.5

ns

tPLZ

OE or CE

A or B

2.3

7.2

2.3

9

2.3

8.2

ns

NOTE 2: Load circuits and voltage waveforms are shown in Section 1.