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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3C3245
2.5V/3.3V, High Bandwidth,
Hot Insertion, 8-Bit, 2-Port, Bus Switch
Power Supply Characteristics
Parameters Description
I
CC
∆I
CC
Quiescent Power
Supply Current
Supply Current per
Input HIGH
Test Conditions
(1)
V
CC
= Max.
V
CC
= Max.
V
IN
= GND or V
CC
V
IN
= 3.0V
(3)
Min.
Typ.
(2)
260
Max.
500
µA
750
Units
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
.
Switching Characteristics over 3.3V Operating Range
PI3C3245
Com.
Min.
Max.
0.25
1.5
C
L
= 50pF,
R
L
= 500Ω,
R = 500Ω
1.5
6.5
5.5
ns
Parameters Description
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation Delay
(2,3)
Ax to Bx
Bus Enable Time
BE to Ax or Bx
Bus Disable Time
BE to Ax or Bx
Conditions
(1)
C
L
= 50pF,
R
L
= 500Ω
Units
Switching Characteristics over 2.5V Operating Range
PI3C3245
Com.
Min.
Max.
0.25
1.5
C
L
= 50pF,
R
L
= 500Ω,
R = 500Ω
1.5
9.8
8.3
ns
Parameters Description
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation Delay
(2,3)
Ax to Bx
Bus Enable Time
BE to Ax or Bx
Bus Disable Time
BE to Ax or Bx
Conditions
(1)
C
L
= 50pF,
R
L
= 500Ω
Units
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
PERICOM [ PERICOM SEMICONDUCTOR CORPORATION ]
