
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
A
Supply Current
ICC
Supply Current per
VCC = Max.
VIN = 3.4V
(3)
2.5
mA
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
ns
tPHL
Ax to Cx, Bx to Dx
RL = 500
tPZH
Bus Enable Time
1.5
6.5
ns
tPZL
BE to Cx or Dx
tPHZ
Bus Disable Time
1.5
5.5
ns
tPLZ
BE to Cx or Dx
tBX
Bus Exchange Time
1.5
6.5
ns
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