PI3C3244 Datasheet, PDF (3/4 Pages) Pericom Semiconductor Corporation – 2.5V/3.3V, High Bandwidth, Hot Insertion, 8-Bit, 2-Port Bus Switch

PI3C3244
2.5V/3.3V, High Bandwidth,
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Power Supply Characteristics
Parameters Description
I_CC
Quiescent Power
Supply Current
∆I_CC
Supply Current per
Input HIGH
1
Test Conditions⁽¹⁾
2 ^{Min. Typ.(2) Max. Units}
V_CC = Max.
V_IN = GND or V_CC
260 500
V_CC = Max.
V_IN = 3.0V⁽³⁾
µA
750
3
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.
4
Switching Characteristics over 3.3V Operating Range
PI3C3244
5
Parameters Description
Conditions⁽¹⁾
Com.
Min. Max.
Units
t_PLH
Propagation Delay^(2,3) C_L = 50 pF,
0.25
t_PHL
Ax to Bx
R_L = 500Ω
6
t_PZH Bus Enable Time
1.5
6.5
ns
t_PZL
BE to Ax or Bx
C_L = 50 pF,
t_PHZ Bus Disable Time
t_PLZ
BE to Ax or Bx
R_L = 500Ω,
R = 500Ω
1.5
5.5
7
Switching Characteristics over 2.5V Operating Range
8
PI3C3244
Com.
Parameters Description
Conditions⁽¹⁾
Min. Max. Units
9
t_PLH
t_PHL
t_PZH
t_PZL
t_PHZ
t_PLZ
Propagation Delay^(2,3) C_L = 50 pF,
Ax to Bx
R_L = 500Ω
Bus Enable Time
BE to Ax or Bx
C_L = 50 pF,
Bus Disable Time
R_L = 500Ω,
BE to Ax or Bx
R = 500Ω
0.25
1.5
9.8
ns
1.5
8.3
10
11
Notes:
1. See test circuit and waveforms.
12
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
13 ^{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.
14
15
3
PS8149B 12/10/99