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PI3C32X384BE

2.5V/3.3V, High Bandwidth, Hot Insertion, 20-Bit, 2-Port Bus Switch

Pericom Semiconductor 

PI3C32X384

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

20-Bit, 2-Port Bus Switch 1122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122

Power Supply Characteristics

Parameters

Description

Test Conditions(1)

Min. Typ.(2) Max.

ICC

Quiescent Power Supply Current

VCC = Max.,

VIN = GND or VCC

— 0.50 1.0

∆ICC

Supply Current per Input

@ TTL HIGH

VCC = Max.,

VIN = 3.0V(3)

—

—

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 TTL driven input (control inputs only); A and B pins do not contribute to ICC.

Units

mA

Switching Characteristics over 3.3V Operating Range

Parameters

Description

Conditions(1)

tPLH

Propogation Delay(2,3)

tPHL

Ax to Bx, Bx to Ax

Com.

Min. Max.

—

0.25

tPZH

tPZL

Bus Enable Time

BEx to Ax or Bx

CL = 50pF

RL = 500-ohm

1.5

6.5

tPHZ

Bus Disable Time

tPLZ

BEx to Ax or Bx

1.5

5.5

Units

ns

Switching Characteristics over 2.5V Operating Range

Parameters

Description

Conditions(1)

tPLH

Propogation Delay(2,3)

tPHL

Ax to Bx, Bx to Ax

tPZH

tPZL

Bus Enable Time

BEx to Ax or Bx

CL = 50pF

RL = 500-ohm

tPHZ

Bus Disable Time

tPLZ

BEx to Ax or Bx

Com.

Min. Max.

—

1.25

1.5

9.8

1.5

8.3

Units

ns

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 capacitance. The

time constant for the switch alone is of the order of 0.25ns for 50pF 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.

3

PS8430C

09/24/04

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