PI5C32160C
16-Bit to 32-Bit, DeMux PCI Hot-Plug Bus Switch
with –1.5V Undershoot Protection
3
PS8362E 03/10/05
Switching Characteristics over Operating Range
Parameters Description
Test Conditions
(1)
PI5C32160C
UnitsCom.
Min. Typ. Max.
t
PLH
t
PHL
Propagation Delay
(2,3)
A to B
C
L
= 50pF
R
L
= 500Ω
0.25
ns
t
PZH
t
PZL
Bus Enable Time
SEL TO A,B
1.3 5.0
t
PHZ
t
PLZ
Bus Disable Time
SEL to A,B
0.5 5.0
Power Supply Characteristics
Parameters Description Test Conditions
(1)
Min. Typ
(2)
Max. Units
I
CC
Quiescent Power
Supply Current
V
CC
= Max. V
IN
= GND or V
CC
70 200 µA
ΔI
CC
Supply Current per
Input @ TTL HIGH
V
CC
= Max.
V
IN
= 3.4V
(3)
other pin=V
CC
or GND
2.5 mA
I
CCD
Supply Current per
Input per MHz
(4)
V
CC
= Max.,
A and B Pins Open
Control Input Toggling
50% Duty Cycle
0.25
mA/
MHz
Notes:
1. For Max. or Min. conditions, use appropriate value specied under Electrical Characteristics for the applicable device.
2. Typical values are at V
CC
= 5.0V, +25°C ambient.
3. Per TTL driven input (V
IN
= 3.4V, control inputs only); A and B pins do not contribute to I
CC
.
4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the specied frequency.
The A and B inputs generate no signicant AC or DC currents as they transition. This parameter is not tested, but is guaranteed by design.
5. Values for these conditions are examples of the I
CC
formula. These limits are guaranteed but not tested.
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.
Capacitance (T
A
= 25°C, f = 1 MHz)
Parameters
(5)
Description Test Conditions Typ. Max. Units
C
IN
Input Capacitance
V
IN
= 0V
3.5
pF C
OFF
A/B Capacitance, Switch Off 6.5
C
ON
A/B Capacitance, Switch On 13.5
Notes:
1. For Max. or Min. conditions, use appropriate value specied under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 5.0V, T
A
= 25°C ambient and maximum loading.
3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
4. Measured by the voltage drop between A and B pins at indicated current through the switch. On-Resistance is determined by the lower of the
voltages on the two (A & B) pins.
5. This parameter is determined by device characterization but is not production tested.
