Philips Semiconductors

Product specification

74F1240, 74F1241*

Buffers

1999 Jan 08

4

* Discontinued part. Please see the Discontinued Products List.

LOGIC DIAGRAM – 74F1240

Ia0

218

Ya0

Ia1

416

Ya1

Ia2

614

Ya2

Ia3

812

Ya3

OEa

1

Ib0

17

3

Yb0

Ib1

15

5

Yb1

Ib2

13

7

Yb2

Ib3

11

9

Yb3

OEb

19

SF01369

FUNCTION TABLE – 74F1240

INPUTS

OUTPUTS

OEa

Ia

OEb

Ib

Ya

Yb

L

L

L

L

H

H

L

H

L

H

L

L

H

X

H

X

Z

Z

H = High voltage level

L

= Low voltage level

X = Don’t care

Z = High impedance “off” state

LOGIC DIAGRAM – 74F1241

Ia0

218

Ya0

Ia1

416

Ya1

Ia2

614

Ya2

Ia3

812

Ya3

OEa

1

Ib0

17

3

Yb0

Ib1

15

5

Yb1

Ib2

13

7

Yb2

Ib3

11

9

Yb3

OEb

19

SF01370

FUNCTION TABLE – 74F1241

INPUTS

OUTPUTS

OEa

Ia

OEb

Ib

Ya

Yb

L

L

H

L

L

L

L

H

H

H

H

H

H

X

L

X

Z

Z

H = High voltage level

L

= Low voltage level

X = Don’t care

Z = High impedance “off” state

ABSOLUTE MAXIMUM RATINGS

(Operation beyond the limit set forth in this table may impair the useful life of the device.

Unless otherwise noted these limits are over the operating free-air temperature range.)

SYMBOL

PARAMETER

RATING

UNIT

Supply voltage

–0.5 to +7.0

V

Input voltage

–0.5 to +7.0

V

Input current

–30 to +5

mA

Voltage applied to output in High output state

V

Current applied to output in Low output state

128

mA

Operating free-air temperature range

0 to +70

°C

Storage temperature range

–65 to +150

°C