pi3b3257 Pericom Semiconductor Corporation, pi3b3257 Datasheet - Page 3

• Manufacturer Part Number: pi3b3257
• Description: 3.3v Quad 2 1 Multiplexer/demultiplexer
• Manufacturer: Pericom Semiconductor Corporation

Power Supply Characteristics
Notes:
1.
2.
3.
4.
Switching Characteristics Over Operating Range
Notes:
1.
2.
Parameters
Parameters
For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
Typical values are at V
Per TTL driven input (control inputs only); I and Y pins do not contribute to I
This current applies to the control inputs only and represent the current required to switch internal capacitance at the specified frequency. The I
and Y inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is guaranteed by design.
This parameter is guaranteed but not tested on Propagation Delays.
The bus switch contributes no propagational delay other than the RC delay of the On-Resistance of the switch and the load capacitance. The
switch’s time constant 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.
∆I
I
CC
t
t
t
CC
t
06-0220
t
PZH
PHZ
t
PZL
PLZ
SY
IY
Quiescent Power Supply Current
Supply Current per Input @ TTL
HIGH
(3, 4)
CC
Propagation Delay In to Yn
= 3.3V, +25°C ambient.
Bus Disable Time, E to Yn
Bus Select Time, Sn to Yn
Bus Enable Time, E to Yn
Description
Description
(1,2)
V
V
CC
CC
= Max.
= Max.
3
Test Conditions
Conditions
R
C
L
L
CC
= 500Ω
V
V
= 50pF
.
IN
IN
= GND or V
= 3.0
(1)
CC
Min.
1
1
1
Mux/DeMux NanoSwitch
PI3B3257
Min.
Com.
Typ.
Max.
0.25
4.5
4.5
4.8
0.1
(2)
3.3V, Quad 2:1
PS8151K
Max. Units
750
3.0
PI3B3257
Units
ns
05/16/06
µA
™