PI3C16861A 데이터 시트보기 (PDF) - Pericom Semiconductor

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PI3C16861A

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

Pericom Semiconductor 

PI3C16861

2.5V/3.3V, High Bandwidth,

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Power Supply Characteristics

Parameters

Description

Test Conditions

Min. Typ. Max. Units

ICC

∆ICC

Quiescent Power Supply Current

Supply Current per Input @ TTL HIGH

VIN = GND or VCC

VCC = Max.

VIN = 3.0V(3)

260 850

µA

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 input only); A and B pins do not contribute to ICC.

Switching Characteristics over 3.3V Operating Range

PI3C16861

Com.

Parameters

TPLH

TPHL

TPZH

TPZL

TPHZ

TPLZ

Description

Propagation Delay (2,3)

Ax to Bx, Bx to Ax

Bus Enable Time

BE to Ax or Bx

Bus Disable Time

BE to Ax or Bx

Conditions

CL = 50pF, RL = 500Ω

Min.

1.5

Max.

0.25

6.5

5.5

Units

ns

Switching Characteristics over 2.5V Operating Range

PI3C16861

Com.

Parameters

TPLH

TPHL

TPZH

TPZL

TPHZ

TPLZ

Description

Propagation Delay (2,3)

Ax to Bx, Bx to Ax

Bus Enable Time

BE to Ax or Bx

Bus Disable Time

BE to Ax or Bx

Conditions

CL = 50pF, RL = 500Ω

Min.

1.5

Max.

0.25

9.8

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

PS8424C 01/09/01

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