PI3B3251 Просмотр технического описания (PDF) - Pericom Semiconductor Corporation
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PI3B3251 Datasheet PDF : 5 Pages
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PI3B3251
3.3V, 8:1 Mux/DeMux NanoSwitch™
Power Supply Characteristics
Parameters
Description
Test Conditions(1)
Min. Typ.(2) Max.
ICC
ΔICC
Quiescent Power Supply Current
Supply Current per Input
@ TTL HIGH
VCC = Max.
VCC = Max.
VIN = GND or VCC
VIN = 3.0V(3)
0.1
3
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 input only); I and Y pins do not contribute to ICC.
Units
μA
Switching Characteristics over Operating Range
Parameters
Description
tPD
Propagation Delay(1,2), In to Y
Conditions
Min.
Com.
Max.
0.25
Units
tSY
Bus Enable Time, Sn to Y
tPZH
tPZL
Bus Enable Time, E to Y
1
4.5
CL = 50pF
RL = 500Ω
1
3.5
ns
tPHZ
tPLZ
Bus Disable Time, E to Y
1
5.5
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 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.
Applications Information
Logic Inputs
The logic control inputs can be driven up to +3.6V regardless of the supply voltage. For example, given a + 3.3V supply, IN may be
driven low to 0V and high to 3.6V. Driving IN Rail-to-Rail® minimizes power consumption.
Power-Supply Sequencing and Hot-Plug Information
Proper power-supply sequencing is recommended for all CMOS devices. Always apply VCC and GND before applying signals to
input/output or control pins.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
09-0037
PS8150G
03/02/09
3
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