PI3C34X245 Datasheet, PDF (3/4 Pages) Pericom Semiconductor Corporation – 2.5V/3.3V, High Bandwidth, Hot Insertion 32-Bit, 2-Port, Bus Switch

PI3C34X245
2.5V/3.3V, High Bandwidth,
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Power Supply Characteristics
Parameters Description
Test Conditions⁽¹⁾
Min. Typ.⁽²⁾ Max.
I_CC
Quiescent Power
Supply Current
V_CC = Max.
V_IN = GND or V_CC
1.0 2.0
∆I_CC
Supply Current per
V_CC = Max.
V_IN = 3.0V⁽³⁾
2.5
Input HIGH
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at V_CC = 3.3V, +25°C ambient.
3. Per driven input (control input only); A and B pins do not contribute to ∆I_CC.
Units
mA
Switching Characteristics over 3.3V Operating Range
P13C34X245
Parameters
Description
Conditions
Com.
Units
t_PLH
Propagation Delay ^(2,3)
C_L = 50pF
t_PHL
Ax to Bx
R_L = 500Ω
Min. Max.
0.25
t_PZH
Bus Enable Time
t_PZL
BE to Ax or Bx
t_PHZ
Bus Disable Time
t_PLZ
BE to Ax or Bx
C_L = 50pF
1.5
6.5
ns
R_L = 500Ω
R = 500Ω
1.5
5.5
Switching Characteristics over 2.5V Operating Range
P13C34X245
Parameters
Description
Conditions
Com.
Units
t_PLH
Propagation Delay ^(2,3)
C_L = 50pF
t_PHL
Ax to Bx
R_L = 500Ω
Min. Max.
0.25
t_PZH
Bus Enable Time
t_PZL
BE to Ax or Bx
t_PHZ
Bus Disable Time
t_PLZ
BE to Ax or Bx
C_L = 50pF
1.5
9.8
ns
R_L = 500Ω
R = 500Ω
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 timesof 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
PS8429B 12/10/99