PI5C162212 데이터 시트보기 (PDF) - Pericom Semiconductor

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PI5C162212

24-Bit Bus Exchange Switch

Pericom Semiconductor 

PI5C16212/162212

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Power Supply Characteristics

Parameters

Description

Test Conditions(1)

Min. Typ.(2) Max. Units

ICC

Quiescent Power Supply Current

VCC = Max.

VIN = GND or VCC —

0.1

3.0 µA

∆ICC(3)

ICCD

Supply Current per Input @ TTL HIGH

Supply Current per Input per MHz(5)

SN = GND, Control Input Toggling

50% Duty Cycle

VCC = 3.6V

VCC = Max.,

A & B Pins Open

VIN = 2.7V(4)

— — 0.2 mA

— — 0.25 mA/

MHz

Notes:

1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for applicable device.

2. Typical values are at VCC = 5.0V, +25°C ambient.

3. This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND.

4. Per TTL driven input (VIN = 2.7V, control inputs only); A and B pins do not contribute to ICC.

5. 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.

PI5C16212 Switching Characteristics over Operating Range

Parameters

Description

tPLH

tPHL

Propagation Delay(2,3), xAx to xBx, xBx to xAx

tPLH

tPHL

Propagation Delay, S to Ax or Bx

tPZH

tPZL

Bus Enable Time, S to xAx or xBx

tPHZ

tPLZ

Bus Disable Time, S to xAx or xBx

Conditions(1)

CL = 50pF

RL = 500 ohms

PI5C16212

Com.

Min. Max.

Units

— 0.25

1.5 7.5

ns

1.5 7.0

1.5 6.5

PI5C162212 Switching Characteristics over Operating Range

Parameters

Description

Conditions(1)

PI5C162212

Com.

Min. Max. Units

tPLH

tPHL

Propagation Delay(2,3), xAx to xBx, xBx to xAx

tPZH

tPZL

Bus Enable Time, S to xAx or xBx

tPHZ

tPLZ

Bus Disable Time, S to xAx or xBx

CL = 50pF

RL = 500 ohms

— 1.25

1.5 7.0

ns

1.5 6.5

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

PS7023E 05/08/01

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