PERIC PI3B34X245 Datasheet

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PI3B34X245

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3.3V Hot Insertion

32-Bit, 2-Port Bus Switch

Product Features

Product Description

Fast Switching Speed - 4.5ns max.

Permits Hot Insertion

Near-zero propagation delay

5W switches connect inputs to outputs

Direct bus connection when switches are ON

Ultra-low quiescent power (1.0µA typical)

Ideally suited for notebook applications

Industrial operating temperature: –40°C to +85°C

Packages available:

80-pin 150 mil wide plastic BQSOP (B)

TTL - compatible control of input levels

Logic Block Diagram

 

 

A0

 

B0

 

 

A7

 

B7

 

 

 

 

 

 

 

 

BE1

 

 

 

 

A8

 

B8

 

A15

 

B15

 

 

 

 

 

 

 

BE2

 

 

A16

 

B16

A23

 

B23

 

 

 

 

 

BE3

 

 

 

A24

 

B24

 

A31

 

B31

 

 

 

 

 

BE4

 

 

Truth Table(1)

Pericom Semiconductor’s PI3B series of logic circuits are produced in the company’s advanced sub micron CMOS technology.

The PI3B34X245 is a 3.3V, 32-bit, 2-port bus switch. Four enable signals (BEn) turn the switches on. The bus switch creates no additional propagational delay or additional ground bounce noise.

Product Pin Configuration

NC 1

A0 2

A1 3

A2 4

A3 5

A4 6

A5 7

A6 8

A7 9

GND 10 NC 11 A8 12 A9 13 A10 14 A11 15 A12 16 A13 17 A14 18 A15 19

GND 20

NC 21

A16 22

A17 23

A18 24

A19 25

A20 26

A21 27

A22 28

A23 29

GND 30

NC 31

A24 32

A25 33

A26 34

A27 35

A28 36

A29 37

A30 38

A31 39

GND 40

80-PIN

B

80 VCC

79 BE1

78 B0

77 B1

76 B2

75 B3

74 B4

73 B5

72 B6

71 B7

70 VCC

69 BE2

68 B8

67 B9

66 B10

65 B11

64 B12

63 B13

62 B14

61 B15

60 VCC

59 BE3

58 B16

57 B17

56 B18

55 B19

54 B20

53 B21

52 B22

51 B23

50 VCC

49 BE4

48 B24

47 B25

46 B26

45 B27

44 B28

43 B29

42 B30

41 B31

 

 

 

 

 

Function

BEn

A0–31

Disconnect

 

H

Hi-Z

 

 

 

 

 

Connect

 

L

B0–31

Note:

1.H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance

Product Pin Description

Pin Name

I/O

Description

 

 

 

 

 

 

 

 

I

Bus Enable Input (Active LOW)

BEn

A0-A31

I/O

Bus A

 

 

 

 

 

B0-B31

I/O

Bus B

1

PS8335A

02/10/99

 

 

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