PI3C3861L(1999) Просмотр технического описания (PDF) - Pericom Semiconductor

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PI3C3861L
(Rev.:1999)

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

Pericom Semiconductor 

PI3C3861

2.5V/3.3V, High Bandwidth,

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Power Supply Characteristics

Parameters Description

Test Conditions(1)

1 Min. Typ(2) Max. Units

ICC

Quiescent Power

Supply Current

∆ICC

Supply Current per

Input @ TTL HIGH

VCC = Max.

VCC = Max.

VIN = GND or VCC

VIN = 3.0V(3)

260 500

µA 2

750

Notes:

3

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

4

guaranteed by design.

Switching Characteristics over 3.3V Operating Range

5

PI3C3861

Com.

Parameters

Description

Conditions

Min. Max. Units

6

tPLH

Propagation Delay (2,3)

tPHL

Ax to Bx, Bx to Ax

0.25

tPZH

Bus Enable Time

tPZL

BE to Ax or Bx

CL = 50pF, RL = 500Ω 1.5 6.5 ns

7

tPHZ

Bus Disable Time

tPLZ

BE to Ax or Bx

1.5 5.5

8

Switching Characteristics over 2.5V Operating Range

9

PI3C3861

Com.

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Parameters

tPLH

tPHL

tPZH

tPZL

Description

Propagation Delay (2 ,3 )

Ax to Bx, Bx to Ax

Bus Enable Time

BE to Ax or Bx

Conditions

Min. Max. Units

0.25

CL = 50pF, RL = 500Ω 1.5 9.8 ns

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12

tPHZ

Bus Disable Time

tPLZ

BE to Ax or Bx

1.5 8.3

13

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.

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PS8198B 12/10/99

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