pi5c34x245 Pericom Semiconductor Corporation, pi5c34x245 Datasheet - Page 3

• Manufacturer Part Number: pi5c34x245
• Description: 32-bit Bus Switch
• Manufacturer: Pericom Semiconductor Corporation

Capacitance
Notes:
1.
Power Supply Characteristics
Notes:
1.
2.
3.
4.
Switching Characteristics over Operating Range
Notes:
1.
2.
Paramaters
Parameters
Parameter
C
C
C
This parameter is determined by device characterization but is not production tested.
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 (V
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.
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
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.
IN
OFF
ON
∆I
I
t
t
t
t
t
t
I
CCD
PLH
PHL
PZH
PZL
PHZ
PLZ
CC
CC
06-0238
(1)
(T
Quiescent Power Supply Current
Supply Current per Input @ TTL
HIGH
Supply Current per Input per MHz
Propagation Delay
Ax to Bx, Bx to Ax
Bus Enable Time BEx to Ax or Bx
Bus Disable Time BEx to Ax or Bx
A
= 25°C, f = 1 MHz)
Description
Input Capacitance
A/B Capacitance, Switch OFF
A/B Capacitance, Switch ON
CC
IN
= 5.0V, +25°C ambient.
= 3.4V, control inputs only); A and B pins do not contribute to I
Description
Description
(1,2)
(4)
V
V
V
A & B Pins Open
Control Input Toggling
50% Duty Cycle
CC
CC
CC
= Max.
= Max.
= Max.,
Test Conditions
Test Conditions
3
Conditions
R
C
V
L
L
IN
= 500Ω
= 50pF
= 0V
V
or V
V
(1)
CC
IN
IN
.
= GND
CC
= 3.4V
(3)
Min.
Max.
1.5
1.5
12
6
6
PI5C34X245
32-Bit, 2-Port Bus Switch
Min. Typ
Com.
Max.
0.25
5.6
5.2
0.1
(2)
PS7058H
PI5C34X245
Max. Units
0.25
Units
3.0
2.5
pF
Units
ns
MHz
mA/
mA
µA
05/12/06