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PI3B33X257_04 Datasheet, PDF (3/4 Pages) Pericom Semiconductor Corporation – 3.3V, 24:12 Mux/DeMux NanoSwitch
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PI3B33X257
3.3V, 24:12 Mux/DeMux NanoSwitch™
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(4)
Description
Test Conditions
Typ.
Max.
Units
CIN
Input Capacitance
3.0
COFF
In/Yn Capacitance, Switch Off
VIN = 0V
17.0
pF
CON
In/Yn Capacitance, Switch On
25.0
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 3.3V, TA = 25°C ambient and maximum loading.
3. Measured by the voltage drop between I and Y pin at indicated current through the switch. ON resistance is determined by the lower of the
voltages on the two (I,Y) pins.
4. This parameter is determined by device characterization but is not production tested.
Power Supply Characteristics
Parameters
Description
ICC
Quiescent Power
Supply Current
ΔICC
Supply Current per
Input @ TTL HIGH
Test Conditions(1)
VCC = Max.
VIN = GND or VCC
VCC = Max.
VIN = 3.0V(3)
Min.
Typ.(2)
0.1
Max.
9.0
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 (VIN = 3.4V, control inputs only); I and Y pins do not contribute to ICC.
Units
µA
Switching Characteristics over Operating Range
Parameters
Description
tIY
Propagation Delay(2,3)
In to Yn
Test Conditions(1)
Com.
Min.
Max.
0.25
Units
tSY
Bus Select Time
Sn to Yn
tPZH
Bus Disable Time
tPZL
E to Yn
tPHZ
Bus Disable Time
tPLZ
E to Yn
CL = 50pF
RL = 500Ω
1
4.5
ns
1
4.5
1
4.8
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
PS8334D
11/01/04
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