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PI5C32861 Datasheet(PDF) 3 Page - Pericom Semiconductor Corporation

Part No. PI5C32861
Description  10-Bit, 2-Port Bus Switch with 25ohm Series Resistor
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Maker  PERICOM [Pericom Semiconductor Corporation]
Homepage  http://www.pericom.com
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PI5C32861 Datasheet(HTML) 3 Page - Pericom Semiconductor Corporation

   
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PI5C32861
10-Bit, 2-Port Bus Switch
with 25Ω
Ω Series Resistor
PS8104
03/14/97
Power Supply Characteristics
Parameters Description
Test Conditions
(1)
Min.
Typ
(2)
Max.
Units
ICC
Quiescent Power
VCC = Max.
VIN = GND or VCC
0.1
10
µA
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
PI5C32861
Com.
Parameters
Description
Conditions(1)
Min
Max
Units
tPLH
Propagation Delay(2,3)
CL = 50pF
1.25
ns
tPHL
Ax to Bx, Bx to Ax
RL = 500
tPZH
Bus Enable Time
1.5
6.5
ns
tPZL
BE to Ax or Bx
tPHZ
Bus Disable Time
1.5
5.5
ns
tPLZ
BE to Ax or Bx
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 1.25ns 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.
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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