SN54BCT540, SN74BCT540A

OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SCBS012D – JULY 1988 – REVISED SEPTEMBER 1994

3

POST OFFICE BOX 655303

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

otherwise noted)

PARAMETER

TEST CONDITIONS

SN54BCT540

SN74BCT540A

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 = 7 V

0.1

0.1

mA

IIH

VCC = 5.5 V,

VI = 2.7 V

20

20

µA

IIL

VCC = 5.5 V,

VI = 0.5 V

– 0.6

– 0.6

mA

IOZH

VCC = 5.5 V,

VO = 2.7 V

50

50

µA

IOZL

VCC = 5.5 V,

VO = 0.5 V

–50

–50

µA

IOS‡

VCC = 5.5 V,

VO = 0

– 100

– 225

– 100

– 225

mA

ICCH

VCC = 5.5 V

20

30

20

30

mA

ICCL

VCC = 5.5 V

45

71

45

71

mA

ICCZ

VCC = 5.5 V

3

6

3

6

mA

Ci

VCC = 5 V,

VI = 2.5 V or 0.5 V

6

5

pF

Co

VCC = 5 V,

VO = 2.5 V or 0.5 V

10

10

pF

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

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

switching characteristics (see Figure 1)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 5 V,

CL = 50 pF,

R1 = 500

Ω,

R2 = 500

Ω,

TA = 25°C

VCC = 4.5 V to 5.5 V,

CL = 50 pF,

R1 = 500

Ω,

R2 = 500

Ω,

TA = MIN to MAX§

UNIT

′BCT540

SN54BCT540

SN74BCT540A

MIN

TYP

MAX

MIN

MAX

MIN

MAX

tPLH

A

Y

2.5

4.1

5.8

1.9

7.2

2

6.9

ns

tPHL

A

Y

0.6

1.9

3.5

0.3

4.5

0.3

4

ns

tPZH

OE

Y

4

6.8

8.9

4.1

10.4

3.3

10.1

ns

tPZL

OE

Y

5

8

10

5.3

11.8

4.3

11.3

ns

tPHZ

OE

Y

3.5

5.7

7.8

2.7

9.4

2.7

9

ns

tPLZ

OE

Y

3.8

5.5

7.4

3.5

8.9

3.5

8.5

ns

§ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.