Philips Semiconductors

Product specification

SC28C94

Quad universal asynchronous receiver/transmitter (QUART)

1998 Aug 19

3

PIN CONFIGURATIONS

46

45

44

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

28

27

26

25

21

22

23

24

X1/CLK

TXDD

RXDD

IRQN

A5

A4

A3

A2

A1

A0

WRN

CEN

RDN

DACKN

IACKN

TXDB

RXDB

D7

D6

D5

D4

D3

D1

D0

RXDA

TXDA

I/O2B

I/O1B

I/O0B

I/O2A

I/O1A

I/O0A

I/O0C

I/O1C

I/O2C

I/O0D

I/O1D

I/O2D

RXDC

TXDC

RESET

X2

VSS

VCC

D2

VSS

VSS

RXDB

D7

D6

D5

D4

I/O3B

D1

D0

RXDA

TXDA

D2

VSS

D3

A5

IRQN

RXDD

TXDD

X1/CLK

X2

TXDC

RXDC

I/O2D

I/O1D

RESET

I/O3D

VSS

48-Pin Dual-In-Line Package

52-Pin PLCC Package

1

2

3

4

5

6

7

8

9

10

11

18

19

20

21

22

23

24

31 32

33

34

35

36

37

50

51

52

38

39

40

41

42

43

25

26

27

28

29

30

12

13

14

15

16

17

47

48

49

VSS

SD00159

Figure 2. Pin Configurations (cont.)

SYMBOL

PARAMETER

RATING

UNIT

Note 4

_C

Storage temperature range

–65 to +150

_C

–0.5 to +7.0

V

V

Package power dissipation (PLCC52)

2.8

W

Package power dissipation (PDIP48)

3.1

W

Derating factor above 25

_C (PLCC52)

22

mW/

_C

Derating factor above 25

_C (PDIP48)

25

mW/

_C

NOTES:

1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and

functional operation of the device at these or any other condition above those indicated in the operation section of this specification is not

implied.

2. For operating at elevated temperatures, the device must be derated based on +150

°C maximum junction temperature.

3. This product includes circuitry specifically designed for the protection of its internal devices from damaging effects of excessive static

charge. Nonetheless, it is suggested that conventional precautions be taken to avoid applying any voltages larger than the rated maxima.

4. Parameters are valid over specified temperature range. See ordering information table for applicable temperature range and operating

supply range.