SN74BCT25240

25 Ω OCTAL BUFFER/DRIVER

WITH 3STATE OUTPUTS

SCBS101B − JUNE 1990 − REVISED NOVEMBER 1993

2−3

POST OFFICE BOX 655303

POST OFFICE BOX 1443

recommended operating conditions (see Note 2)

MIN

NOM

MAX

UNIT

VCC

Supply voltage

4.5

5

5.5

V

VIH

High-level input voltage

2

V

VIL

Low-level input voltage

0.5

V

IIK

Input clamp current

−18

mA

IOH

High-level output current

−80

mA

IOL

Low-level output current

188

mA

TA

Operating free-air temperature

0

70

°C

NOTE 2: Unused or floating inputs must be held high or low.

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

otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

VIK

VCC = 4.5 V,

II = −18 mA

−1.2

V

VOH

VCC = 4.75 V,

IOH = − 3 mA

2.7

V

VOH

VCC = 4.5 V,

IOH = − 80 mA

2

V

VOL

VCC = 4.5 V

IOL = 94 mA

0.42

0.55

V

VOL

VCC = 4.5 V

IOL = 188 mA

0.7

V

II

VCC = 5.5 V,

VI = 5.5 V

0.1

mA

IIH

VCC = 5.5 V,

VI = 2.7 V

20

µA

IIL

VCC = 5.5 V,

VI = 0.5 V

− 0.6

mA

IOZH

VCC = 5.5 V,

VO = 2.7 V

50

µA

IOZL

VCC = 5.5 V,

VO = 0.5 V

−50

µA

ICCL

VCC = 5.5 V,

Outputs open

90

127

mA

ICCH

VCC = 5.5 V,

Outputs open

39

55

mA

ICCZ

VCC = 5.5 V,

Outputs open

7

10

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

16.5

pF

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

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

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 5 V,

TA = 25°C

MIN

MAX

UNIT

PARAMETER

(INPUT)

(OUTPUT)

MIN

TYP

MAX

MIN

MAX

UNIT

tPLH

A

Y

0.6

2.8

4.4

0.6

5

ns

tPHL

A

Y

0.5

2.1

3.6

0.5

3.7

ns

tPZH

OE

Y

1.8

4.3

6.2

1.8

7.2

ns

tPZL

OE

Y

3.7

6.5

8.7

3.7

10.3

ns

tPHZ

OE

Y

1.2

3.9

5.7

1.2

6.7

ns

tPLZ

OE

Y

2.7

5.8

8.2

2.7

8.9

ns

NOTE 3: Load circuits and voltage waveforms are shown in Section 1.