183

PS 7029A 03/13/96

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PI5B3384/3384C/32384 (25Ω

Ω

Ω

Ω

Ω)

10-BIT, 2-PORT BusSwitch

Power Supply Characteristics

Parameters Description

Test Conditions

(1)

Min.

Typ

(2)

Max.

Units

Quiescent Power

PI5C3384

—

0.1

3.0

µA

Supply Current

PI5C32384

PI5C3384C

—

60

100

µA

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

Control Input Toggling

50% Duty Cycle

PI5C3384/3384C Switching Characteristics over Operating Range

PI5C3384/3384C

Parameters

Description

Min

Typ

Max

Unit

—

0.25

—

ns

Ax to Bx, Bx to Ax

Ω

Bus Enable Time

1.5

—

6.5

ns

Bus Disable Time

1.5

—

5.5

ns

BEx to Ax or Bx

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

guaranteed by design.

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.