PI3L500-A
3.3V, 8-Channel, 2:1 Mux/DeMux
Gigabit Ethernet LAN Switch with Single Enable
and Enhanced ESD Protection
Description
The PI3L500-A is a 8-Channel 2:1 multiplexer/demultiplexer LAN
Switch with Hi-Z outputs. Industry leading advantages include a
propagation delay of less than 250ps, resulting from its low channel
resistance and I/O capacitance. The device multiplexes differential
outputs from a Gigabit Ethernet transceiver (PHY) device to one
of two corresponding B1 or B2 outputs. The switch is bidirectional
and offers little or no attenuation of the high-speed signals at the
outputs. It is designed for low bit-to-bit skew, high channel-to-
channel noise isolation and is compatible with various standards,
such as 10/100/1000 Base-T (Ethernet).
Generally, this part can be used to replace mechanical relays in
low-voltage LAN applications that interface a physical layer over
CAT 5 or CAT 6 unshielded twisted pair cable through an isolation
transformer.
Features
•
•
•
•
•
•
•
•
•
R
ON
is 4Ω typical
Low bit-to-bit skew: 200ps
Low Crosstalk: –22dB @ 250MHz
Near-Zero propagation delay: 250ps
Switching speed: 9ns
Channel On capacitance: 10pF (typical)
Status Indicator LEDs Switched with Ethernet pairs
V
CC
Operating Range: +3.0V to +3.6V
Enhanced ESD Protection:
– 8kV (contact)
(1)
– Switch pins: 1.1kV (machine model),
12kV (human body model)
• >550 MHz bandwidth (or data frequency)
• Packaging:
– Pb-free and Green, 56-contact TQFN (ZF)
Applications
• Dual Physical Layer Device sharing to one interface
connector
• Routes signals for 10/100/1000 Mbit Ethernet
Note:
1. IEC 61000-4-2
Block Diagram
A
0
A
1
0
B
1
1
B
1
0
B
2
1
B
2
Pin Description
2
LED
1
2
LED
2
51
LED
2
GND
GND
56
55
54
53
52
50
A
6
A
7
6
B
1
7
B
1
6
B
2
7
B
2
LED
X
X
LED
1
X
LED
2
GND
A
0
A
1
V
DD
N.C.
GND
A
2
A
3
GND
V
DD
A
4
A
5
GND
A
6
A
7
GND
SEL
V
DD
LED
0
LED
1
49
GND
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
V
DD
V
DD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
0
B
1
1
B
1
0
B
2
1
B
2
GND
2
B
1
3
B
1
2
B
2
3
B
2
GND
V
DD
4
B
1
5
B
1
4
B
2
5
B
2
GND
6
B
1
7
B
1
6
B
2
7
B
2
21
22
23
24
25
26
27
GND
GND
0
LED
1
1
LED
1
0
LED
2
SEL
1
LED
2
GND
V
DD
28
1
PS8803
12/13/05