PI3C3305
PI3C3306
2.5V/3.3V, High Bandwidth, Hot Insertion,
2-Bit, 2-Port Bus Switch w/ Individual Enables
Features
•
•
•
•
•
•
•
•
Near-Zero propagation delay
5Ω switches connect inputs to outputs
High Bandwidth (>400 MHz)
Rail-to-Rail, 3.3V or 2.5V Switching
5V I/O Tolerant
2.5V Supply Voltage Operation
Permits Hot Insertion
Packaging (Pb-free & Green Available):
– 8-pin 173-mil wide plastic TSSOP
– 8-pin 118-mil wide plastic MSOP
Description
Pericom Semiconductor’s PI3C3305 and PI3C3306 are 2.5V or
3.3 Volt, 2-bit bus switches designed with fast individual enables.
When enabled via the associated Bus Enable (BE) pin, the “A” pin
is directly connected to the “B” pin for that particular gate. The
bus switch introduces no additional propagation delay or additional
ground bounce noise.
The PI3C3306 device has active LOW enables, and the PI3C3305
has active HIGH enables. It is very useful in switching signals that
have high bandwidth (>400 MHz).
Applications
• High Bandwidth Data Switching
• Hot Docking
PI3C3305 Block Diagram
A1
BE1
A2
B2
PI3C3306 Block Diagram
B1
A1
BE1
A2
B2
B1
BE2
BE2
PI3C3305 Pin Configuration
BE1
A1
B1
GND
V
CC
BE2
B2
A2
PI3C3306 Pin Configuration
BE1
A1
B1
GND
VCC
BE2
B2
A2
Pin Description
Pin Name
BEn
BEn
A2-A1
B2-B1
V
CC
GND
Description
Switch Enable (PI3C3305)
Switch Enable (PI3C3306)
Bus A
Bus B
Power
Ground
Truth Table
(1)
PI3C3306
BEn
X
H
L
PI3C3305
BEn
X
(2)
L
H
An
Bn
V
CC
GND
V
CC
V
CC
Function
Disconnect
Disconnect
Connect
Hi-Z Hi-Z
Hi-Z Hi-Z
Bn
An
Notes:
1. H = High Voltage Level; L = Low Voltage Level;
Hi-Z = High Impedance; X = Don’t Care
2. A pull-up resistor should be provided for power-up protection.
PS8417E
09/07/04
1
PERICOM [ PERICOM SEMICONDUCTOR CORPORATION ]
