SN54BCT125A, SN74BCT125A

QUADRUPLE BUS BUFFER GATES

WITH 3-STATE OUTPUTS

SCBS032F – SEPTEMBER 1988 – REVISED MARCH 2003

3

POST OFFICE BOX 655303

recommended operating conditions (see Note 3)

SN54BCT125A

SN74BCT125A

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

SN54BCT125A

SN74BCT125A

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 = 0,

VI = 7 V

0.1

0.1

mA

IIH

VCC = 5.5 V,

VI = 2.7 V

35

25

µA

IIL

VCC = 5.5 V,

VI = 0.5 V

–20

–20

µA

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,

Outputs open

19

31

19

31

mA

ICCL

VCC = 5.5 V,

Outputs open

46

49

46

49

mA

ICCZ

VCC = 5.5 V,

Outputs open

6

14

6

14

mA

Ci

VCC = 5 V,

VI = 2.5 V or 0.5 V

4

4

pF

Co

VCC = 5 V,

VO = 2.5 V or 0.5 V

9

9

pF

† All typical values are at VCC = 5 V.

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