PI5C16292
PI5C162292 (25Ω)
24-Bit Mux/Demux Bus Switch
Features
Description
• Near-zero propagation delay
• 5Ω switches connect inputs to outputs
• Direct bus connection when switches are ON
• Internal 500Ω pull-down on A2 ports
PericomSemiconductor’sPI5Cseriesoflogiccircuitsareproduced
using the Company’s advanced 0.6 micron CMOS technology.
The PI5C16292 and PI5C162292 are 12-bit to 24-bit Mux/Demux
Bus switches designed with a low ON resistance allowing inputs
to be connected directly to outputs.
• Ultra-low quiescent power (0.2µA typical)
– Ideally suited for notebook applications
• Industrial operating temperature: –40°C to +85°C
• Make-before-break switching
The PI5C162292 device has a built-in 25-ohm series resistor to
reduce noise resulting from reflections, thus eliminating the need
for an external terminating resistor.
A2 port is not externally connected and, as a result, has an internal
500-ohm pulldown resistor to ground.
• Packages available:
– 56-pin 240-mil wide thin plastic TSSOP (A)
– 56-pin 300-mil wide plastic SSOP (V)
Pin Configuration
Applications
• Memory switching
S
A
0
1
NC
NC
1
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
1
2
Logic Block Diagram
NC1
1B
1
3
2A1
1B
2
4
NC1
2B
1
5
3A1
2B
2
6
NC1
3B1
7
GND
GND
8
4A
1
3B2
9
NC1
4B
1
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
5A1
4B
2
Ω
NC1
5B
1
56-Pin
A,V
6A1
5B
2
NC1
6B
1
6B
2
7A1
NC1
CC
7
B
1
2
1
7B
V
8A1
8B
GND
NC1
GND
8B2
9A1
9B
1
Truth Table
NC1
9B
2
Function
S0
L
A1
B1
B2
A2
B2
B1
10A1
10B
1
A1 to B1, A2 to B2
A1 to B2, A2 to B1
NC1
10B
2
11A1
11B
1
H
NC1
11B
2
Note:
12A1
12B
1
1. H = High Voltage Level
L = Low Voltage Level
Z = High Impedance
NC1 28
12B
2
Product Pin Description
Pin Name
S0
I/O
I
Description
Select Inputs
xA1
I/O
I/O
Bus A
Bus B
xBx
NC
NC1
Internally pulled up thru 4.7k resistor
Leave it unconnected
PS8139C
01/11/00
1