PI5C16212
24-Bit Bus Exchange Switch
Features
Description
•
•
•
•
Near-Zero propagation delay
5-ohm switches connect inputs to outputs
Direct bus connection when switches are ON
Ultra-low quiescent power (0.1μA typical)
– Ideally suited for notebook applications
• Industrial operating temperature: –40°C to +85°C
• Packaging (Pb-free & Green Available):
– 56-pin 240-mil wide thin plastic TSSOP (A)
– 56-pin 300-mil wide plastic SSOP (V)
Pericom Semiconductor’s PI5C16212 is a 24-bit bus exchange
switch designed with Low On-Resistance allowing inputs to be
connected directly to outputs. This device operates as a 24-bit
bus switch or a 12-bit exchanger that provides data exchanging
between the four signal ports via the data select pins (S0-S2).
Logic Block Diagram
Pin Configuration
S0
ONE OF TWELVE CHANNELS
1A1
1B1
1A1
1A2
2A1
2A2
3A1
3A2
1B2
1A2
GND
4A1
4A2
FLOW CONTROL
5A1
5A2
S0
S1
S2
Truth Table(1)
Function
Disconnect
A1 to B1
A1 to B2
A2 to B1
A2 to B2
Disconnect
A1 to B1, A2 to B2
A1 to B2, A2 to B1
6A1
6A2
7A1
7A2
VCC
8A1
GND
S2
L
L
L
L
H
H
H
H
S1
L
L
H
H
L
L
H
H
S0
L
H
L
H
L
H
L
H
A1
Z
B1
B2
Z
Z
Z
B1
B2
8A2
A2
Z
Z
Z
B1
B2
Z
B2
B1
9A1
9A2
10A1
10A2
11A1
11A2
12A1
12A2
Pin Description
Pin Name
S0 - S2
xAx
xBx
Note:
1. H = High Voltage Level, L = Low Voltage Level, Z = High
Impedance
06-0227
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
I/O
I
I/O
I/O
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
S1
S2
1B1
1 B2
2B1
2 B2
3B1
GND
3 B2
4B1
4 B2
5B1
5 B2
6B1
6 B2
7B1
7 B2
8 B1
GND
8 B2
9B1
9 B2
10B1
10B2
11B1
11B2
12B1
12B2
Description
Select Inputs
Bus A
Bus B
PS7023N
05/07/07
