PERIC PI3B16245V, PI3B16245A Datasheet

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PI3B16245

 

PI3B162245 (25Ω)

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3.3V, Hot Insertion, 16-Bit, 2-Port BusSwitch

Product Features

Near-zero propagation delay

5 Ω switches connect inputs to outputs

Fast Switching Speed - 4ns max.

Permits Hot Insertion

Pin compatible with 74 series16245

Operating Vcc Range: 3.0V to 3.6V

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

Packages available:

48-pin 240 mil wide thin plastic TSSOP (A)

48-pin 300 mil wide plastic SSOP (V)

Product Description

Pericom Semiconductor’s PI3B series of logic circuits are produced using the Company’s advanced 0.35 micron CMOS technology.

The PI3B16245 and PI3B162245 are 3.3 volt, hot-insertion, 16-bit, 2-port bus switches that are pin compatible with the 74 series 16245 16-bit transceiver. Two enable signals (nBE) turn the switches on similar to the enable signals of the 16245. The bus switches create no additional propagational delay or additional ground bounce noise.

The PI3B162245 device has a built-in 25-ohm series resistor to reduce noise resulting from reflections, thus eliminating the need for an external terminating resistor.

Logic Block Diagram

1A0

 

1B0

1A7

 

1B7

1

 

 

 

 

 

 

BE

 

 

2A0

 

2B0

2A7

 

2B7

 

 

 

 

 

 

 

 

 

2

BE

 

 

 

Truth Table(1)

 

 

 

 

 

Function

nBE

nA0–7

Disconnect

 

H

Hi-Z

 

 

 

 

 

Connect

 

L

nB0–7

Note: 1. H = High Voltage Level

L = Low Voltage Level

Hi-Z = High Impedance

Product Pin Configuration

NC

 

1

 

48

 

1BE

1B0

 

2

 

47

 

1A0

 

 

 

1B1

 

3

 

46

 

1A1

 

 

 

GND

 

4

 

45

 

GND

 

 

 

1B2

 

5

 

44

 

1A2

 

 

 

1B3

 

6

 

43

 

1A3

 

 

 

VCC

 

7

 

42

 

VCC

 

 

 

1B4

 

8

 

41

 

1A4

 

 

 

1B5

 

9

 

40

 

1A5

 

 

 

GND

 

10

 

39

 

GND

 

 

 

1B6

 

11

 

38

 

1A6

 

 

 

1B7

 

12

48-Pin 37

 

1A7

 

 

2B0

 

13

A, V

36

 

2A0

 

 

 

 

 

2B1

 

14

 

35

 

2A1

 

 

 

GND

 

15

 

34

 

GND

 

 

 

2B2

 

16

 

33

 

2A2

 

 

 

2B3

 

17

 

32

 

2A3

 

 

 

VCC

 

18

 

31

 

VCC

 

 

 

2B4

 

19

 

30

 

2A4

 

 

 

2B5

 

20

 

29

 

2A5

 

 

 

GND

 

21

 

28

 

GND

 

 

 

2B6

 

22

 

27

 

2A6

 

 

 

2B7

 

23

 

26

 

2A7

 

 

 

NC

 

24

 

 

 

 

 

 

 

 

25

 

2BE

 

 

 

Product Pin Description

Pin Name

I/O

Description

 

 

 

 

 

 

 

 

I

Bus Enable Input (Active LOW)

nBE

 

nA0-nA7

I/O

Bus A

 

 

 

 

 

nB0-nB7

I/O

Bus B

1

PS8189C

09/13/99

 

 

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