PI3C3245LE Просмотр технического описания (PDF) - Pericom Semiconductor

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PI3C3245LE

2.5V/3.3V, High Bandwidth, Hot Insertion 8-Bit, 2-Port, Bus Switch

Pericom Semiconductor 

PI3C3245

2.5V/3.3V, High Bandwidth,

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Power Supply Characteristics

Parameters Description

Test Conditions(1)

Min. Typ.(2) Max.

ICC

Quiescent Power

Supply Current

ΔICC

Supply Current per

Input HIGH

VCC = Max.

VCC = Max.

VIN = GND or VCC

VIN = 3.0V(3)

260 500

750

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

μA

Switching Characteristics over 3.3V Operating Range

Parameters Description

Conditions

PI3C3245

Com.

Min. Max.

Units

tPLH

tPHL

tPZH

tPZL

tPHZ

tPLZ

Propagation Delay(1,2) CL = 50pF

Ax to Bx

RL = 500-ohm

Bus Enable Time

BE to Ax or Bx

CL = 50pF

Bus Disable Time

RL = 500-ohm

BE to Ax or Bx

R = 500-ohm

0.25

1.5

6.5

ns

1.5

5.5

Notes:

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

2. 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.

Switching Characteristics over 2.5V Operating Range

PI3C3245

Com.

Parameters Description

Conditions

Min. Max. Units

tPLH

tPHL

tPZH

tPZL

tPHZ

tPLZ

Propagation Delay(1,2) CL = 50pF

Ax to Bx

RL = 500-ohm

Bus Enable Time

BE to Ax or Bx

CL = 50pF

Bus Disable Time

RL = 500-ohm

BE to Ax or Bx

R = 500-ohm

0.25

1.5

9.8

ns

1.5

8.3

Notes:

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

2. 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.

06-0244

3

PS8162D 05/09/06

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