25鈩?/div>
switches connect inputs to outputs
Fair Switching Speed - 4.5ns max.
32X384 function with flow through pinout make board
layout easier
Permits Hot Insertion.
Vcc Operating Range: 3.0V to 3.6V
Industrial operating temperature: 鈥?0擄C to +85擄C
Packages available:
鈥?48-pin 150-mil wide plastic QSOP (B)
鈥?48-pin 240-mil wide plastic TSSOP (A)
鈥?48-pin 300-mil wide plastic SSOP (V)
Pericom Semiconductor鈥檚 PI3B series of BusSwitch circuits are
produced in the Company鈥檚 advanced 0.35 micron CMOS
technology, achieving industry leading speed.
The PI3B16210 is configured as 3.3 volt 20-bit, 2-port bus
switches designed with a low ON resistance (5鈩? allowing inputs
to be connected directly to outputs. The bus switch creates no
additional propagational delay or additional ground bounce noise.
The switches are turned ON by the Bus Enable (xOE) input signal.
The PI3B162210 device has a built-in 25-ohm series resistor to
reduce noise resulting from reflections, thus eliminating the need
for an external terminating resistor.
Logic Block Diagram
1A
1
1B
1
Product Pin Configuration
1A
10
1B
10
1OE
48-Pin
2A
1
2B
1
2A
10
2B
10
2OE
Truth Table
(1)
Inputs
1OE
L
L
H
H
2OE
L
H
L
H
Inputs/Outputs
1A,1B
1A = 1B
1A = 1B
Z
Z
2A,2B
2A = 2B
Z
2A = 2B
Z
Product Pin Description
Pin Name
1OE, 2OE
1A1-1A10, 2A1-2A10
1B1 - 1B10, 2B1 - 2B10
1
Note:
1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
Description
Bus Enable Inputs (Active LOW)
Bus A
Bus B
PS8193B
11/09/98
1
2
3
