PI3C34X245B 查看數據表（PDF） - Pericom Semiconductor

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PI3C34X245B

2.5V/3.3V, High Bandwidth, Hot Insertion, 32-Bit, 2-Port, Bus Switch

Pericom Semiconductor 

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2.5V/3.3V, High Bandwidth, Hot Insertion

32-Bit, 2-Port, Bus Switch

Product Features

• Near zero propagation delay

• 5-ohm switches connect inputs to outputs

• 2.5V Supply Voltage Operation

• Permits Hot Insertion

• 5V I/O Tolerant

• High Bandwidth Operation (>400 MHz)

• Packages available:

– 80-pin 150 mil wide plastic BQSOP (B)

– 80-pin plastic very fine pitch dual flat no lead (DFN) (Z)

Product Description

Pericom Semiconductor’s PI3C series of logic circuits are produced

using the Company’s advanced submicron CMOS technology,

achieving industry leading performance.

The PI3C34X245 is a 2.5V or 3.3V, 32-bit, 2-port bus switch designed

with a low ON resistance (5 ohms) allowing inputs to be connected

directly to outputs. The bus switch creates no additional propagational

delay or additional ground bounce noise. The switches are turned

ON by the Bus Enable (BE) input signal. It is very useful in switching

signals that have high bandwidth (>400 MHz).

Logic Block Diagram

Product Pin Configuration

A0

A7

BE1

A8

A15

BE2

A16

A23

BE3

A24

B0

B7

B8

B15

B16

B23

B24

NC

A0

A1

A2

A3

A4

A5

A6

A7

GND

NC

A8

A9

A10

A11

A12

A13

A14

A15

GND

NC

A16

A17

A18

A19

A20

A21

A22

A23

GND

NC

A24

A25

A26

A27

A28

A29

A30

A31

GND

1

80

2

79

3

78

4

77

5

76

6

75

7

74

8

73

9

72

10

71

11

70

12

69

13

68

14

67

15

66

16 80-Pin65

17 B, Z 64

18

63

19

62

20

61

21

60

22

59

23

58

24

57

25

56

26

55

27

54

28

53

29

52

30

51

31

50

32

49

33

48

34

47

35

46

36

45

37

44

38

43

39

42

40

41

VCC

BE1

B0

B1

B2

B3

B4

B5

B6

B7

VCC

BE2

B8

B9

B10

B11

B12

B13

B14

B15

VCC

BE3

B16

B17

B18

B19

B20

B21

B22

B23

VCC

BE4

B24

B25

B26

B27

B28

B29

B30

B31

Product Pin Description

A31

B31

Pin Name

Description

BEn

Bus Enable Input (Active LOW)

BE4

A0 – A31

Bus A

B0 – B31

Bus B

1

PS8429C 08/03/01

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