PI3B33X257B(1999) Просмотр технического описания (PDF) - Pericom Semiconductor
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PI3B33X257B Datasheet PDF : 3 Pages
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PI3B33X257
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Power Supply Characteristics
Parameters Description
Test Conditions(1)
Min. Typ.(2) Max.
ICC
∆ICC
Quiescent Power
Supply Current
Supply Current per
Input @ TTL HIGH
VCC = Max.
VCC = Max.
VIN = GND or VCC
VIN = 3.0V(3)
0.1 3.0
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
µA
Switching Characteristics over Operating Range
PI3B33X257
Parameters Description
Conditions(1)
Com.
Min.
Max.
tIY
Propagation Delay(2,3) CL = 50pF
In to Yn
RL = 500Ω
tSY
Bus Select Time
Sn to Yn
tPZH
Bus Disable Time
tPZL
E to Yn
tPHZ
Bus Disable Time
tPLZ
E to Yn
0.25
1
4.5
1
4.5
1
4.8
Units
ns
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 deter-
mined by the driving circuit on the driving side of the switch and its interaction with
the load on the driven side.
Ordering Information
Part Number
Pin / Package
PI33X257B
48-BQSOP (B48)
Temperature
40°C to +85°C
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
3
PS8334A
09/28/99
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