pi5c3390 Pericom Semiconductor Corporation, pi5c3390 Datasheet - Page 4

• Manufacturer Part Number: pi5c3390
• Description: 16 8, Multiplexer/demultiplexer
• Manufacturer: Pericom Semiconductor Corporation

PI5C32390 Switching Characteristics over Operating Range
Notes:
1. See test circuit and waveforms.
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
Test Circuit
Enable and Disable Timing Diagram
Parameters
Normally
Normally
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.
Control
Output
Output
t
t
t
t
t
t
PLH
PHL
PZH
PHZ
PZL
PLZ
Generator
Input
High
Low
1. Input Control Enable = Low; Input Control Disable = High
2. Pulse Generator for all pulses:
Pulse
Rate <1.0 MHz; Z OUT <50Ω; t F , t R <2.5ns
07-0126
t
t
PZH
PZL
Enable
Description
Propagation Delay
A, B to/from C
Bus Enable Time
AEN/BEN to A, B, C
Bus Disable Time
AEN/BEN to A, B, C
Switch
Switch
1.5V
GND
V
IN
R
1.5V
1.5V
0V
3V
T
t
D.U.T.
t
PZH
V
PLZ
Disable
CC
(2,3)
V
R
Conditions
OUT
C
L
= 500-ohm
L
0.3V
0.3V
= 50 pF
1.5V
V
50pF
C
V
500Ω
3V
0V
3V
0V
OH
OL
L
(1)
500Ω
Min.
1.5
1.5
4
7V
Open
PI5C32390
Propagation Delay Diagram
Com
Input Transisiton
Input Transisiton
Typ.
1.25
Opposite Phase
Same Phase
Switch Position
16:8 Multiplexer/Demultiplexer Bus Switch
Output
Definitions:
C
R
Disable LOW
Enable LOW
L
T
Max.
= Load capacitance (includes jig and
= Termination resistance (should be
t
t
6.5
5.5
PLH
PLH
probe capacitance)
equal to Z
Test
t
PD
1.5V
Unit
ns
ns
ns
OUT
of the pulse generator)
Switch
Closed
Closed
1.5V
Open
PI5C3390; PI5C32390
PS7030J
t
t
PHL
PHL
1.5V
1.5V
V
1.5V
V
0V
OH
05/02/07
3V
OL
3V
0V