pi5c3244 Pericom Semiconductor Corporation, pi5c3244 Datasheet - Page 3

• Manufacturer Part Number: pi5c3244
• Description: 8-bit Bus Switch Buffers Fct244 Pinout
• Manufacturer: Pericom Semiconductor Corporation

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2
Notes:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at Vcc = 5.0V, +25°C ambient.
3. Per TTL driven input (V
4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the specified frequency. The
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
Power Supply Characteristics
Parameters Description
Parameters Description
A and B inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is guaranteed by design.
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.
I
ΔI
I
CC
t
t
t
t
t
t
CCD
PZH
PZL
PHZ
PLZ
PLH
PHL
CC
06-0239
Quiescent Power
Supply Current
Supply Current per
Input @ TTL HIGH
Supply Current per
Input per MHz
Propagation Delay
Ax to Bx
Bus Enable Time
BE
Bus Disable Time
BE
X
X
to Ax or Bx
to Ax or Bx
IN
= 3.4V, control inputs only); A and B pins do not contribute to Icc.
(4)
(1,2)
Conditions
C
R
L
L
= 500-ohm
= 50 pF
V
V
V
A and B Pins Open
BE
Control Input Toggling
50% Duty Cycle
CC
CC
CC
1
= Max.
= Max.
= Max.,
or BE
2
= GND
Test Conditions
Min
1.5
1.5
PI5C3244
3
Com.
Max
0.25
5.6
5.2
(1)
V
V
IN
IN
= 3.4V
= GND or V
Unit
ns
ns
ns
(3)
CC
Min.
Typ
8-Bit, 2-Port Switch
0.1
(2)
PS7014E
Max.
0.25
3.0
2.5
PI5C3244
Units
MHz
mA/
mA
μA
05/12/06