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PI3C34X245

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

Pericom Semiconductor Corporation 

PI3C34X245

2.5V/3.3V, High Bandwidth, Hot Insertion,

32-Bit, 2-Port Bus Switch

Power Supply Characteristics

Parameters Description

Test Conditions(1)

Min Typ (2) Max

ICC

ΔICC

Quiescent Power Supply

Current

Supply Current per

VCC = Max.

Input HIGH

VIN = GND or VCC

VIN = 3.0V(3)

1.0

2.0

2.5

Notes:

1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.

2. Typical values are at VCC = 3.3V, +25°C ambient.

3. Per driven input (control input only); A and B pins do not contribute to ΔICC.

Units

mA

Switching Characteristics over 3.3V Operating Range

Parameters Description

tPLH

Propagation Delay(2,3)

tPHL

Ax to Bx

tPZH

Bus Enable Time

tPZL

BE to Ax or Bx

tPHZ

Bus Disable Time

tPLZ

BE to Ax or Bx

Test Conditions (1)

CL = 50 pF

RL = 500Ω

CL = 50 pF

RL = 500Ω

R = 500Ω

Com.

Min Max

0.25

1.5

6.5

1.5

5.5

Units

ns

Switching Characteristics over 2.5V Operating Range

Com.

Parameters Description

Test Conditions (1) Min Max Units

tPLH

Propagation Delay(2,3) CL = 50 pF

tPHL

Ax to Bx

RL = 500Ω

0.25

tPZH

Bus Enable Time

tPZL

BE to Ax or Bx

CL = 50 pF

RL = 500Ω

tPHZ

Bus Disable Time

R = 500Ω

tPLZ

BE to Ax or Bx

1.5

9.8

ns

1.5

8.3

Notes:

1. See test circuit and waveforms.

2. This parameter is guaranteed but not tested on Propagation Delays.

3. The bus switch contributes no propagational delay other than the RC delay of the On-Resistance of the switch and the load ca-

pacitance. The time constant for the switch alone is of the order of 0.25 ns for 50 pF load. Since this time constant is much smaller

than the rise/fall times of typical driving signals, it adds very little propagational delay to the system. Propagational delay of the bus

switch when used in a system is determined by the driving circuit on the driving side of the switch and its interaction with the load

on the driven side.

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13-0159

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www.pericom.com

PS8429F

10/23/13

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