3

PS7025B

06/21/00

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PI5C16245/162245

16-Bit, 2-Port Bus Switch

Power Supply Characteristics

Parameters Description

TestConditions

(1)

Min.

Typ

(2)

Max.

Units

Quiescent Power

—

0.1

3.0

µA

Supply Current

Supply Current per

(3)

—

—

2.5

mA

Input @ TTL HIGH

Supply Current per

—

—

0.25

mA/

Input per MHz

(4)

A and B Pins Open

MHz

nBE =GND

Control Input Toggling

50% Duty Cycle

Notes:

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

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

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.

PI5C162245 Switching Characteristics over Operating Range

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