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PI5C162245

16-Bit, 2-Port Bus Switch

Pericom Semiconductor 

PI5C16245/162245

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Power Supply Characteristics

Parameters Description

ICC

Quiescent Power

Supply Current

ΔICC

Supply Current per

Input @ TTL HIGH

ICCD

Supply Current per

Input per MHz(4)

Test Conditions(1)

VCC = Max.

VIN = GND or VCC

VCC = Max.

VIN = 3.4V(3)

VCC = Max.,

A and B Pins Open

nBE = GND

Control Input Toggling

50% Duty Cycle

Min. Typ(2) Max. Units

0.1 3.0 μA

2.5 mA

0.25 mA/

MHz

Notes:

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

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

3. Per TTL driven input (VIN = 3.4V, control inputs 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.

PI5C16245 Switching Characteristics over Operating Range

PI5C16245

Com.

Parameters Description

Conditions(1)

Min

Max Unit

tPLH

Propagation Delay(2,3) CL = 50 pF

tPHL xAxtoxBx,xBxtoxAx RL = 500-ohm

tPZH

Bus Enable Time

1.5

tPZL

XBE to xAx or xBx

tPHZ

Bus Disable Time

1.5

tPLZ

xBE to xAx or xBx

0.25 ns

6.5 ns

5.5 ns

PI5C162245 Switching Characteristics over Operating Range

PI5C162245

Com.

Parameters Description

Conditions(1)

Min

Max Unit

tplh

Propagation Delay(2,3) CL = 50 pF

tphl

xAxtoxBx,xBxtoxAx RL = 500-ohm

tpzh Bus Enable Time

1.5

tpzl

xBE to xAx or xBx

tphz Bus Disable Time

1.5

tplz

xBE to xAx or xBx

1.25 ns

6.5 ns

5.5 ns

Notes:

1. See test circuit and wave forms.

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 0.25 ns for 50 pF 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

PS7025D 01/24/06

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