PI3C3861 Datasheet, PDF (3/5 Pages) Pericom Semiconductor Corporation – 2.5V/3.3V, High Bandwidth, Hot Insertion, 10-Bit, 2-Port, BusSwitch

PI3C3861
2.5V/3.3V, High-Bandwidth,
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Power Supply Characteristics
Parameters Description
ICC
Quiescent Power
Supply Current
∆ICC
Supply Current per
Input @ TTL HIGH
Test Conditions⁽¹⁾
VCC = Max.
VIN = GND or VCC
VCC = Max.
VIN = 3.0V⁽³⁾
Min.
Typ⁽²⁾
260
Max.
500
750
Units
µA
Notes:
1. For Max. or Min.conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at Vcc = 3.3V, +25°C ambient.
3. Per TTL driven input (control input only); A and B pins do not contribute to I_CC.
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 3.3V Operating Range
Parameters
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Description
Propagation Delay ^(2,3)
Ax to Bx, Bx to Ax
Bus Enable Time
BE to Ax or Bx
Bus Disable Time
BE to Ax or Bx
Conditions
CL = 50pF, RL = 500Ω
PI3C3861
Com.
Min. Max. Units
0.25
1.5 6.5 ns
1.5 5.5
Switching Characteristics over 2.5V Operating Range
Parameters
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Description
Propagation Delay ^{(2 ,3 )}
Ax to Bx, Bx to Ax
Bus Enable Time
BE to Ax or Bx
Bus Disable Time
BE to Ax or Bx
Conditions
CL = 50pF, RL = 500Ω
PI3C3861
Com.
Min. Max. Units
0.25
1.5 9.8 ns
1.5 8.3
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
0.25ns 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.
3
PS8198C
02/11/03