PI5C3400 datasheet(3/3 Pages) PERICOM

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PI5C3400

4-BIT, 4-PORT BUS

EXCHANGESWITCH

193

PS8191

05/07/98

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Power Supply Characteristics

Parameters Description

Test Conditions

(1)

Min.

Typ

(2)

Max.

Units

ICC

Quiescent Power

VCC= Max.

VIN = GND or VCC

0.1

3.0

µA

Supply Current

∆ICC

Supply Current per

VCC = Max.

VIN = 3.4V

(3)

2.5

Input @ TTL HIGH

ICCD

Supply Current per

VCC = Max.,

0.25

mA/

Input per MHz

(4)

A and B 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.

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.

Switching Characteristics over Operating Range

PI5C3400

Com.

Parameters

Description

Conditions(1)

Min.

Max.

Unit

tPLH

Propagation Delay(2,3)

CL = 50 pF

0.25

tPHL

Ax to Cx, Bx to Dx

RL = 500

Ω

tPZH

Bus Enable Time

1.5

6.5

tPZL

BE to Cx or Dx

tPHZ

Bus Disable Time

1.5

5.5

tPLZ

BE to Cx or Dx

tBX

Bus Exchange Time

1.5

6.5

BXX to Cx or Dx

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.

Pericom Semiconductor Corporation

2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com

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