Philips Semiconductors

Product specification

74F827, 74F828

Buffers

1994 Dec 05

4

LOGIC DIAGRAM 74F827

2

D0

Q0

23

1

OE0

3

D1

Q1

22

4

D2

Q2

21

5

D3

Q3

20

6

D4

Q4

19

7

D5

Q5

18

8

D6

Q6

17

9

D7

Q7

16

10

D8

Q8

15

11

D9

Q9

14

13

OE1

GND = Pin 12

SF00272

LOGIC DIAGRAM 74F828

2

D0

Q0

23

1

OE0

3

D1

Q1

22

4

D2

Q2

21

5

D3

Q3

20

6

D4

Q4

19

7

D5

Q5

18

8

D6

Q6

17

9

D7

Q7

16

10

D8

Q8

15

11

D9

Q9

14

13

OE1

GND = Pin 12

SF00280

FUNCTION TABLE

INPUTS

OUTPUTS

INPUTS

74F827

74F828

OPERATING MODE

OEn

Dn

Qn

Qn

L

L

L

H

Transparent

L

H

H

L

Transparent

H

X

Z

Z

High impedance

H = High voltage level

L

= Low voltage level

X = Don’t care

Z = High impedance “off” state

ABSOLUTE MAXIMUM RATINGS

Operation beyond the limits 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