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.
Note:
1. IEC 61000-4-2
Features
•
•
•
•
•
•
•
•
•
R
ON
is 4Ω typical
Low bit-to-bit skew: 200ps
Low Crosstalk: –35dB @ 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
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
CC
N.C.
GND
A
2
A
3
GND
V
CC
A
4
A
5
GND
A
6
A
7
GND
SEL
V
CC
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
CC
V
CC
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
CC
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
1
LED
2
SEL
GND
V
CC
28
10-0178
1
PS8803A
06/08/10
PI3L500-A
3.3V, 8-Channel, 2:1 Mux/DeMux Gigabit Ethenet LAN
Switch w/Single Enable and Enhanced ESD Protection
Pin Description
Pin Name
A
X
X
B
Y
Truth Table
Description
DeMux Inputs
Mux Inputs
LED Demux Inputs
LED Mux Inputs
Ground
Power
Select
SEL
L
H
Function
A
X
to
X
B
1
; LED
Z
to
Z
LED
1
A
X
to
X
B
2
; LED
Z
to
Z
LED
2
LED
Z
Z
LED
Y
GND
V
CC
SEL
Maximum Ratings
(Above which useful life may be impaired. For user guidelines, not tested.)
Storage Temperature........................................................ –65°C to +150°C
Supply Voltage to Ground Potential
........................... –0.5V to +4.0V
DC Input Voltage ................................................................ –0.5V to +5.5V
DC Output Current .......................................................................... 120mA
Power Dissipation .............................................................................. 0.5W
Note:
Stresses greater than those listed under MAXIMUM RATINGS may cause permanent
damage to the device. This is a stress rating only and functional operation of the device
at these or any other conditions above those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating conditions for extended
periods may affect reliability.
10-0178
2
PS8803A
06/08/10
PI3L500-A
3.3V, 8-Channel, 2:1 Mux/DeMux Gigabit Ethenet LAN
Switch w/Single Enable and Enhanced ESD Protection
DC Electrical Characteristics for 1000 Base-T Ethernet Switching over Operating Range
(T
A
= –40°C to +85°C, V
CC
= 3.3V ±10%)
Paramenter
V
IH
V
IL
V
IK
I
IH
I
IL
R
ON
R
FLAT(ON)
ΔR
ON
Description
Input HIGH Voltage
Input LOW Voltage
Clamp Diode Voltage
Input HIGH Current
Input LOW Current
Switch On-Resistance
(3)
On-Resistance Flatness
(3)
Test Conditions
(1)
Guaranteed HIGH level (Control Pins)
Guaranteed LOW level (Control Pins)
V
CC
= Max., I
IN
= –18mA
V
CC
= Max., V
IN
= V
CC
V
CC
= Max., V
IN
= GND
V
CC
= Min., 1.5V ≤ V
IN
≤ V
CC
I
IN
= –40mA
V
CC
= Min., V
IN
@ 1.5V and V
CC
I
IN
= –40mA
Min.
2.0
–0.5
–
–
–
–
–
–
Typ.
(2)
–
–
–0.7
–
–
4.0
0.5
0.4
Max.
–
0.8
–1.2
±5
±5
6.5
–
1.0
Ω
µA
V
Units
On-Resistance match from center V
CC
= Min., 1.5V ≤ V
IN
≤ V
CC
ports to any other port
(3)
I
IN
= –40mA
(T
A
= –40°C to +85°C, V
CC
= 3.3V ±10%)
Paramenter
V
IH
V
IL
V
IK
I
IH
I
IL
R
ON
R
FLAT(ON)
∆R
ON
Description
Input HIGH Voltage
Input LOW Voltage
Clamp Diode Voltage
Input HIGH Current
Input LOW Current
Switch On-Resistance
(3)
DC Electrical Characteristics for 10/100 Base-T Ethernet Switching over Operating Range
Test Conditions
(1)
Guaranteed HIGH level (Control Pins)
Guaranteed LOW level (Control Pins)
V
CC
= Max., I
IN
= –18mA
V
CC
= Max., V
IN
= V
CC
V
CC
= Max., V
IN
= GND
V
CC
= Min., 1.25V ≤ V
IN
≤ V
CC
I
IN
=
–10mA to –30mA
V
CC
= Min., V
IN
@ 1.25V and V
CC
I
IN
= –10mA to –30mA
Min.
2.0
–0.5
–
–
–
–
–
–
Typ.
(2)
–
–
–0.7
–
–
4.0
0.5
0.4
Max.
–
0.8
–1.2
±5
±5
6.5
–
1.0
Ω
µA
V
Units
On-Resistance Flatness
(3)
On-Resistance match from cen- V
CC
= Min., 1.25V ≤ V
IN
≤ V
CC
I
IN
=
ter ports to any other port
(3)
–10mA to –30mA
Capacitance
(T
A
= 25°C, f = 1MHz)
Parameters
(4)
C
IN
C
OFF(B1, B2)
C
ON(A/B)
Description
Input Capacitance
Port B Capacitance, Switch OFF
A/B Capacitance, Switch ON
Test Conditions
(1)
V
IN
= 0V
Typ.
2.0
4.0
10.0
Max.
3.0
6.0
11.0
Units
pF
Notes:
1. For max. or min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 3.3V,
T
A
= 25°C ambient and maximum loading.
3. Measured by the voltage drop between A and B pins at indicated current through the switch. ON resistance is determined by the lower of the
voltages on the two (A & B) pins.
4. This parameter is determined by device characterization but is not production tested.
10-0178
3
PS8803A
06/08/10
PI3L500-A
3.3V, 8-Channel, 2:1 Mux/DeMux Gigabit Ethenet LAN
Switch w/Single Enable and Enhanced ESD Protection
Power Supply Characteristics
Parameters
I
CC
Description
Quiescent Power Supply Current
Test Conditions
(1)
V
CC
= Max., V
IN
= GND or V
CC
Min.
—
Typ.
(2)
0.5
Max.
3.5
Units
mA
Dynamic Electrical Characteristics Over the Operating Range
(T
A
= –40°C to +85°C,
Parameter
X
TALK
O
IRR
BW
Crosstalk
(3)
OFF Isolation
(3)
Bandwidth –3dB
(3)
Description
Test Conditions
(1)
R
L
= 100Ω, f = 250MHz
R
L
= 100Ω
V
CC
= 3.3V ±10%, GND = 0V)
Min.
—
—
—
Typ.
(2)
–35
–32
350
Max.
—
—
—
Units
dB
MHz
Switching Characteristics
Paramenter
t
PD
t
PZH
, t
PZL
t
PHZ
, t
PLZ
t
SK(o)
t
SK(p)
Propagation Delay
(3,4)
Line Enable Time - SEL to A
N
, B
N
Line Disable Time - SEL to A
N
, B
N
Output Skew between center port (A
4
to A
5
) to any other port
(3)
Description
Min.
–
0.5
0.5
–
–
Typ.
(2)
0.25
–
–
0.1
0.1
15.0
9.0
0.2
0.2
ns
Max.
Units
Skew between opposite transitions of the same output (t
PHL
- t
PLH
)
(3)
Notes:
1. For max. or min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 3.3V,
T
A
= 25°C ambient and maximum loading..
3. Guaranteed by design.
4. The bus switch contributes no propagational delay other than the RC delay of the ON resistance of the switch and the load capacitance. The
time constant for the switch alone is of the order of 0.25ns for 10pF load. Since this time constant is much smaller than the rise/fall times of
typical driving signals, it adds very little propagational delay to the system. Propagational delay of the bus switch when used in a system is
determined by the driving circuit on the driving side of the switch and its interactions with the load on the driven side.
10-0178
4
PS8803A
06/08/10
PI3L500-A
3.3V, 8-Channel, 2:1 Mux/DeMux Gigabit Ethenet LAN
Switch w/Single Enable and Enhanced ESD Protection
Test Circuit for Electrical Characteristics
6.0V
V
CC
200-ohm
Pulse
Generator
V
IN
D.U.T
R
T
V
OUT
10pF
C
L
Switch Positions
Test
t
PLZ
, t
PZL
(output on B-side)
200-ohm
Switch
6.0V
GND
Open
t
PHZ
, t
PZH
(output on B-side)
Prop Delay
Notes:
C
L
= Load capacitance: includes jig and probe capacitance.
R
T
= Termination resistance: should be equal to Z
OUT
of the Pulse Generator
Test Circuit for Dynamic Electrical Characteristics
HP4195A
S1
R1
T1
V
CC
HP11667A
D.U.T
10pF
50-ohm
10-0178
5
PS8803A
06/08/10
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