3

PS7030E

09/15/04

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PI5C3390; PI5C32390

16:8 Multiplexer/Demultiplexer

BusSwitch

PowerSupplyCharacteristics

Parameters Description

Min.

Max.

Units

Quiescent Power

—

0.2

30

µA

Supply Current

Supply Current per

—

—

3.5

mA

Input @ TTL HIGH

Supply Current per

—

—

0.25

mA/

A, B, and C Pins Open

MHz

BE=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.

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

4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the specified frequency. The

A, B, and C inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is guaranteed by design.

5. Values for these conditions are examples of the Icc formula. These limits are guaranteed but not tested.

PI5C3390 Switching Characteristics over Operating Range

PI5C3390

Com

Parameters

Description

Min.

Typ.

Max.

Unit

—

0.25

—

ns

A, B to/from C

Bus Enable Time

1.5

—

6.5

ns

AEN/BEN to A, B, C

Bus Disable Time

1.5

—

5.5

ns

AEN/BEN to A, B, C

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 0.25 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.

PI5C32390 Switching Characteristics over Operating Range

PI5C32390

Com

Parameters

Description

Min.

Typ.

Max.

Unit

—

1.25

—

ns

A, B to/from C

Bus Enable Time

1.5

—

6.5

ns

AEN/BEN to A, B, C

Bus Disable Time

1.5

—

5.5

ns

AEN/BEN to A, B, C