PI3C3861QEX 데이터 시트보기 (PDF) - Pericom Semiconductor

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PI3C3861QEX

2.5V/3.3V, High Bandwidth, Hot-Insertion, 10-Bit, 2-Port, Bus Switch

Pericom Semiconductor 

PI3C3861

2.5V/3.3V, High-Bandwidth,

Hot-Insertion, 10 -Bit, 2-Port, Bus Switch

Power Supply Characteristics

Parameters(4)

Description

Test Conditions(1)

Min. Typ.(2) Max. Units

ICC

ΔICC

Quiescent Power

Supply Current

Supply Current per

Input @ TTL HIGH

VCC = Max.

VCC= Max.

VIN = GND or VCC

VIN = 3.0V(3)

260 500

µA

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

4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the specified frequency. The

A and B inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is guaranteed by design.

Switching Characteristics over 3.3V Operating Range

Parameters

Description

tPLH

Propagation Delay(1,2)

tPHL

Ax to Bx, Bx to Ax

tPZH

Bus Enable Time

tPZL

BE to Ax or Bx

tPHZ

Bus Disable Time

tPLZ

BE to Ax or Bx

Test Conditions

CL = 50pF

RL = 500-ohm

Min.

1.5

1.5

Com.

Max.

0.25

6.5

5.5

Units

ns

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

Parameters

Description

tPLH

Propagation Delay(1,2)

tPHL

Ax to Bx, Bx to Ax

tPZH

Bus Enable Time

tPZL

BE to Ax or Bx

tPHZ

Bus Disable Time

tPLZ

BE to Ax or Bx

Test Conditions

CL = 50pF

RL = 500-ohm

Min.

1.5

1.5

Com.

Max.

0.25

9.8

8.3

Units

ns

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.

06-0245

3

PS8198E

05/09/06

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