PI3B16292A Просмотр технического описания (PDF) - Pericom Semiconductor
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PI3B16292A Datasheet PDF : 4 Pages
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PI3B16292/162292
3.3V, 24-Bit Mux/Demux
BusSwitch (25Ω) 1122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122
Power Supply Characteristics
Parameters
Description
ICC
∆ICC(3)
Quiescent Power
Supply Current
Supply Current for
S0 @ TTL HIGH
ICCD
Supply Current for
S0 per MHz(5)
Toggling 50% Duty Cycle
Test Conditions(1)
VCC = MAX.
VIN = GND or VCC
VCC = MAX.
VIN = 3.0 V(4)
Other Inputs at VCC OR GND
VCC = Max.,
A and B Pins Open
Min. Typ(2) Max. Units
— — 10 µA
— — 750 µA
— — 0.25 mA/
MHz
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for applicable device.
2. Typical values are at Vcc = 3.3V, +25°C ambient.
3. This is the increase in supply current for S0 at the specified TTL voltage level rather than VCC or GND.
4. Per driven input ( S0 only); A and B pins do not contribute to Icc.
5. 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.
PI3B16292 Switching Characteristics over Operating Range
Parameters Description
Conditions(1)
Com.
Min.
Max.
tPLH
Propagation Delay(2,3)
—
0.25
tPHL
xA1 to xBx, xBx to xA1
tPZH
Bus Enable time
tPZL
S to xA1 or xBx
tPHZ
Bus Disable time
tPLZ
S to xA1 or xBx
CL = 50 pF
1
4.5
RL = 500Ω
R = 500Ω to 6V(4) 1
5.0
tm
Make-before-break time(2)
0
2
Units
ns
PI3B162292 Switching Characteristics over Operating Range
Parameters Description
Conditions(1)
Com.
Min.
Max.
Units
tPLH
Propagation Delay(2,3)
—
tPHL
xA1 to xBx, xBx to xA1
tPZH
Bus Enable time
tPZL
S to xA1 or xBx
tPHZ
Bus Disable time
tPLZ
S to xA1 or xBx
CL = 50 pF
1
RL = 500Ω
R = 500Ω to 4.6V(4) 1
tm
Make-before-break time(2)
0
1.25
5
ns
5.5
2
Notes:
1. See test circuit and waveforms.
2. This parameter is guaranteed but not tested.
3. The bus switch contributes no propagational delay other than the RC delay of the ON resistance of the switch and 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 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.
4. Applies to tPLZ and tPZL.
3
PS8177A 12/14/98
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