pi5c32x245 Pericom Semiconductor Corporation, pi5c32x245 Datasheet - Page 3

• Manufacturer Part Number: pi5c32x245
• Description: 16-bit Bus Switch
• Manufacturer: Pericom Semiconductor Corporation

Power Supply Characteristics
Notes:
1.
2.
3.
4.
Switching Characteristics over Operating Range
Notes:
1. This parameter is guaranteed but not tested on Propagation Delays.
2. The bus switch contributes no propagational delay other than the RC delay of the On-Resistance of the switch and the load capacitance. The
Parameters
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.
Parameters
For Max. or Min. conditions, use appropriate value specifi ed under Electrical Characteristics for the applicable device.
Typical values are at Vcc = 5.0V, +25°C ambient.
Per TTL driven input (V
This current applies to the control inputs only and represent the current required to switch internal capacitance at the specifi ed frequency. The
A and B inputs generate no signifi cant AC or DC currents as they transition. This parameter is not tested, but is guaranteed by design.
ΔI
I
I
CCD
t
t
t
t
t
CC
t
PLH
PHL
PZH
PHZ
PZL
PLZ
CC
07-0074
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
BE
Bus Disable Time
BEx to Ax or Bx
De scrip tion
X
to Ax or Bx
IN
= 3.4V, control inputs only); A and B pins do not contribute to Icc.
(4)
De scrip tion
(1,2)
V
V
V
A and B Pins Open
Control Input Toggling
50% Duty Cycle
CC
CC
CC
= Max.,
= Max.
= Max.
Test Conditions
V
V
IN
IN
Conditions
3
= GND or V
= 3.4V
(1)
R
C
L
L
= 500Ω
= 50pF
(3)
(1)
CC
Min.
Min.
1.5
1.5
Typ
16-Bit, 2-Port BusSwitch
Com.
0.1
(2)
Max.
0.25
6.5
5.5
Max.
0.25
3.0
2.5
PS7057G
PI5C32X245
Unit
Units
MHz
ns
mA/
mA
μA
03/23/07