SN54BCT543, SN74BCT543

OCTAL REGISTERED TRANSCEIVERS

WITH 3-STATE OUTPUTS

SCBS026C – NOVEMBER 1988 – REVISED APRIL 1994

2–4

POST OFFICE BOX 655303

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

otherwise noted)

PARAMETER

TEST CONDITIONS

SN54BCT543

SN74BCT543

UNIT

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

MIN

TYP†

MAX

UNIT

VIK

VCC = 4.5 V,

II = –18 mA

–1.2

–1.2

V

IOH = – 3 mA

2.4

3.3

2.4

3.3

VOH

VCC = 4.5 V

IOH = –12 mA

2

3.2

V

IOH = –15 mA

2

3.1

VOL

VCC =4 5V

IOL = 48 mA

0.38

0.55

V

VOL

VCC = 4.5 V

IOL = 64 mA

0.42

0.55

V

II

VCC = 5.5 V,

VI = 5.5 V

0.4

0.4

mA

I

‡

A or B port

VCC =5 5V

VI =2 7V

70

70

µA

IIH‡

Control input

VCC = 5.5 V,

VI = 2.7 V

20

20

µA

I ‡

A or B port

VCC =5 5V

VI =0 5V

– 0.65

– 0.65

mA

IIL‡

Control input

VCC = 5.5 V,

VI = 0.5 V

– 0.6

– 0.6

mA

IOS§

VCC = 5.5 V,

VO = 0

–100

– 225

–100

– 225

mA

ICCL

A or B port

VCC = 5.5 V

45

71

45

71

mA

ICCH

A or B port

VCC = 5.5 V

5

8

5

8

mA

ICCZ

A or B port

VCC = 5.5 V

9

15

9

15

mA

Ci

Control input

VCC = 5 V,

VI = 2.5 V or 0.5 V

6

6

pF

Cio

A or B port

VCC = 5 V,

VO = 2.5 V or 0.5 V

16

16

pF

† All typical values are at VCC = 5 V, TA = 25°C.

‡ For I/O ports, the parameters IIH and IIL include the off-state output current.

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

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

temperature (unless otherwise noted)

VCC = 5 V,

TA = 25°C

SN54BCT543

SN74BCT543

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

tw

Pulse duration, LEAB or LEBA low

7

8

7

ns

tsu

Setup time, data before LEAB or LEBA

↑

High or low

4.5

5.5

4.5

ns

th

Hold time, data after LEAB or LEBA

↑

High or low

1.5

1.5

1.5

ns