SN64BCT25244

25 Ω OCTAL BUFFER/DRIVER

WITH 3STATE OUTPUTS

SCBS477 − DECEMBER 1992 − REVISED JANUARY 1994

3−3

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

0.8

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

−40

85

°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

IOZ

VCC = 0 to 2.3 V (power up)

VO = 2.7 V or 0.5 V,

OE at 0.8 V

±50

A

IOZ

VCC = 2.3 to 0 (power down)

VO = 2.7 V or 0.5 V,

OE at 0.8 V

±50

µA

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

119

mA

ICCH

VCC = 5.5 V,

Outputs open

59

78

mA

ICCZ

VCC = 5.5 V,

Outputs open

7

11

mA

Ci

VCC = 5 V,

VI = 2.5 V or 0.5 V

5.5

pF

Co

VCC = 5 V,

VO = 2.5 V or 0.5 V

17

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

TA = − 40°C

to 85

°C

TA = 0°C

to 70

°C

UNIT

PARAMETER

(INPUT)

(OUTPUT)

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

tPLH

A

Y

1

3.2

4.9

1

5.6

1

5.5

ns

tPHL

A

Y

2

4

5.6

2

6.3

2

6

ns

tPZH

OE

Y

3.2

5.6

8.5

3.2

9.7

3.2

9.3

ns

tPZL

OE

Y

3.7

6.3

9.2

3.7

10.4

3.7

10.2

ns

tPHZ

OE

Y

1.6

3.6

5.5

1.6

6.5

1.6

6.3

ns

tPLZ

OE

Y

3.1

5.3

7.8

3.1

9.5

3.1

8.4

ns

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