SN54BCT540, SN74BCT540A

OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SCBS012E – JULY 1988 – REVISED MARCH 2003

3

POST OFFICE BOX 655303

recommended operating conditions (see Note 3)

SN54BCT540

SN74BCT540A

UNIT

MIN

NOM

MAX

MIN

NOM

MAX

UNIT

VCC

Supply voltage

4.5

5

5.5

4.5

5

5.5

V

VIH

High-level input voltage

2

2

V

VIL

Low-level input voltage

0.8

0.8

V

IIK

Input clamp current

–18

–18

mA

IOH

High-level output current

–12

–15

mA

IOL

Low-level output current

48

64

mA

TA

Operating free-air temperature

–55

125

0

70

°C

NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,

Implications of Slow or Floating CMOS Inputs, literature number SCBA004.

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

IOS‡

VCC = 5.5 V,

VO = 0

–100

–225

–100

–225

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

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.