PI5C3861 데이터 시트보기 (PDF) - Pericom Semiconductor
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PI5C3861 Datasheet PDF : 4 Pages
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PI5C3861
10-Bit, 2-Port Bus Switch
Power Supply Characteristics
Parameters
Description
Test Conditions(1)
Min. Typ(2) Max. Units
ICC
Quiescent Power
Supply Current
VCC = Max.
VIN = GND or VCC
0.1
10
μA
ΔICC
Supply Current per
Input @ TTL HIGH
VCC = Max.
VIN = 3.4V(3)
2.5
mA
ICCD
Supply Current per
Input per MHz(4)
VCC = Max.,
A and B Pins Open
BE =
Control Input Toggling
50% Duty Cycle
0.25
mA/
MHz
Notes:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at VCC = 5.0V, +25°C ambient.
3. Per TTL driven input (VIN = 3.4V, control inputs only); A and B 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
A and B 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
Parameters
Description
tPLH
Propagation Delay(1,2)
tPHL
Ax to Bx, Bx to Ax
tPZH
Bus Enable Time
tPZL
BE to Ax or Bx
tPHZ
Bus Disable Time
tPLZ
BE to Ax or Bx
Conditions
CL = 50pF
RL = 500Ω
Com.
Unit
Min.
Max.
0.25
1.5
6.5
ns
1.5
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.
07-0125
3
PS7021H
05/02/07
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