PI5C16244
16-Bit Bus Switch
3
PS7025G
11/10/09
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
3.0
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
nBE = GND
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 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 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.
Notes:
1.
See test circuit and wave forms.
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.
Switching Characteristics over Operating Range
Parameters
Description
Test
Conditions(1)
PI5C16244
Unit
Com.
Min
Max
tPLH
tPHL
Propagation Delay(2,3)
xAx to xBx
CL = 50pF
RL = 500Ω
0.25
ns
tPZH
tPZL
Bus Enable Time
xBE to xAx or xBx
1.5
5.6
tPHZ
tPLZ
Bus Disable Time
xBE to xAx or xBx
1.5
5.2
09-0005