PI3B3257 查看數據表（PDF） - Pericom Semiconductor
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PI3B3257 Datasheet PDF : 5 Pages
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PI3B3257
3.3V, Quad 2:1
Mux/DeMux NanoSwitch™
Power Supply Characteristics
Parameters
Description
Test Conditions(1)
Min. Typ.(2) Max. Units
ICC
∆ICC
Quiescent Power Supply Current
Supply Current per Input @ TTL
HIGH(3, 4)
VCC = Max.
VCC = Max.
VIN = GND or VCC
VIN = 3.0
0.1 3.0
µA
750
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 inputs only); I and Y pins do not contribute to ICC.
4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the specified frequency. The I
and Y inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is guaranteed by design.
Switching Characteristics Over Operating Range
PI3B3257
Parameters
Description
Conditions
Com.
Units
tIY
Propagation Delay In to Yn(1,2)
Min.
Max.
0.25
tSY
Bus Select Time, Sn to Yn
tPZH
tPZL
Bus Enable Time, E to Yn
CL = 50pF
RL = 500Ω
1
4.5
1
4.5
ns
tPHZ
tPLZ
Bus Disable Time, E to Yn
1
4.8
Notes:
1. This parameter is guaranteed but not tested on Propagation Delays.
2. The bus switch contributes no propagational delay other than the RC delay of the On-Resistance of the switch and the load capacitance. The
switch’s time constant 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.
06-0220
3
PS8151K
05/16/06
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