PI3C3245 Datasheet, PDF (3/4 Pages) Pericom Semiconductor Corporation – 2.5V/3.3V, High Bandwidth, Hot Insertion 8-Bit, 2-Port, Bus Switch

PI3C3245
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
∆I_CC
Supply Current per
Input HIGH
V_CC = Max.
V_CC = Max.
V_IN = GND or V_CC
V_IN = 3.0V⁽³⁾
260 500
750
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
µA
Switching Characteristics over 3.3V Operating Range
PI3C3245
Parameters Description
Conditions⁽¹⁾
Com.
Min. Max.
t_PLH
Propagation Delay^(2,3) C_L = 50pF,
t_PHL
Ax to Bx
R_L = 500Ω
t_PZH Bus Enable Time
t_PZL
BE to Ax or Bx
C_L = 50pF,
t_PHZ Bus Disable Time
R_L = 500Ω,
t_PLZ
BE to Ax or Bx
R = 500Ω
0.25
1.5
6.5
1.5
5.5
Units
ns
Switching Characteristics over 2.5V Operating Range
PI3C3245
Parameters Description
Conditions⁽¹⁾
Com.
Min. Max.
Units
t_PLH
t_PHL
t_PZH
t_PZL
t_PHZ
t_PLZ
Propagation Delay^(2,3) C_L = 50pF,
Ax to Bx
R_L = 500Ω
Bus Enable Time
BE to Ax or Bx
Bus Disable Time
BE to Ax or Bx
C_L = 50pF,
R_L = 500Ω,
R = 500Ω
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
PS8162B 12/10/99