PI3B16209
PI3B162209 (25Ω)
3.3V, 18-Bit Bus Exchange Switch
Product Features
Product Description
• Near-zero propagation delay
PericomSemiconductor’sPI3Bseriesoflogiccircuitsareproduced
in the Company’s advanced 0.35 micron CMOS technology.
• 5Ω switches connect inputs to outputs
• Fast Switching speed - 5ns (max.)
• Operating Range: 3.0V to 3.6V
• Industrial operating temperature: –40°C to +85°C
ThePI3B16209andPI3B162209are3.3volt,18-bitbusexchange
switches designed with a low ON resistance (5Ω) allowing inputs
to be connected directly to outputs. The devices operate as an 18-bit
bus switch or as a 9-bit exchanger, providing data exchange between
the four signal ports via the data select pins (S0-S2).
• Packages available:
– 48-pin 240-mil wide thin plastic TSSOP (A)
– 48-pin 300-mil wide plastic SSOP (V)
The PI5C162209 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
Product Pin Configuration
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
S
0
1
2
S
S
1
2
1
ONE OF NINE CHANNELS
1A
2
1
1
B
1
2
1
A
1
2
1
A
1B
1
3
GND
1B
2
4
2
A
1
2B
1
5
2A2
2B
2
6
B
1A
VCC
GND
7
3
B
B
1
2
3
A
1
8
3A2
3
9
FLOW CONTROL
GND
GND
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48-PIN
A, V
4A
1
4B1
S
S
S
0
1
2
4
A
2
4B
2
5A
1
5B
1
5
A
2
5B2
GND
GND
6
A
1
6B
1
2
1
2
Truth Table
6B
7B
7B
6
A
A
2
1
7
Function
S2
L
S1
L
S0
L
A1
Z
A2
Z
7
A
2
Disconnect
A1 to B1
GND
GND
L
L
H
L
B1
B2
Z
Z
8A
1
8B
1
A1 to B2
L
H
H
L
Z
8
A
2
8B
2
A2 to B1
L
H
L
B1
B2
Z
9A
1
9B
1
A2 to B2
H
H
H
H
Z
9
A
2
9B
2
Disconnect
A1 to B1, A2 to B2
A1 to B2, A2 to B1
L
H
L
Z
H
H
B1
B2
B2
B1
Product Pin Description
H
Pin Name
S0-S2
xAx
I/O
I
I/O
I/O
Description
Select Inputs
Bus A
Note:
1. H = High Voltage Level
L = Low Voltage Level
Z = High Impedance
xBx
Bus B
PS8192B
11/09/98
1