PI3PCIE3412
3.3V, PCI Express® 3.0 2-Lane,
2:1 Mux/DeMux Switch, with Single Enable
Features
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4 Differential Channel, 2:1 Mux/DeMux
PCI Express
®
3.0 Performance, 8.0Gbps
Bi-directional Operation
Low Bit-to-Bit Skew, 10ps max
Low channel-to-channel skew, 20ps max
Low Crosstalk: -35dB@4 GHz
High Off Isolation: -22dB@4 GHz (8.0Gbps)
Low insertion loss: -1.3dB@4 GHz (8.0Gbps)
Return loss: -21dB@4 GHz
Support for DP1.2 - HBR2, HBR, RBR
Supply Voltage 3.3V
Packaging (Pb-free & Green):
– 42-contact, TQFN (ZH42)
Description
Pericom Semiconductor’s PI3PCIE3412 is an 8 to 4 differential
channel multiplexer/demultiplexer switch. This solution can
switch 2 full PCI Express
®
3.0, lanes to one of two locations.
Using a unique design technique, Pericom has been able to
minimize the impedance of the switch such that the attenuation
observed through the switch is mininal. The unique design
technique also offers a layout targeted for PCI Express signals,
which minimizes the channel to channel skew as well as channel
to channel crosstalk as required by the PCI Express specification.
PI3PCIE3412 can also be used for application up to 12Gbps
Routing of PCI Express 3.0, DP1.2, USB3.0, SAS2.0, SATA3.0,
XAUI, RXAUI signals with low signal attenuation.
Application
Block Diagram
A0+
A0-
A1+
A1-
B0+
B0-
B1+
B1-
C0+
C0-
C1+
C1-
B2+
B2-
B3+
B3-
C2+
C2-
C3+
C3-
Pin Configuration (Top-side view)
V
DD
GND
V
DD
GND
A2+
A2-
A3+
A3-
SEL
Truth Table
Function
A
N
to B
N
A
N
to
C
N
SEL
L
H
GND
A0+
A0-
GND
V
DD
A1+
A1-
V
DD
SEL
GND
A2+
A2-
V
DD
GND
A3+
A3-
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
42 41 40 39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
B0+
B0-
B1+
B1-
C0+
C0-
C1+
C1-
V
DD
B2+
B2-
B3+
B3-
C2+
C2-
C3+
C3-
18 19 20 21
V
DD
GND
V
DD
GND
1
www.pericom.com
13-0046
04/15/13
PCI Express® 3.0 2-Lane,
2:1 Mux/DeMux Switch with Single Enable
Pin Description
Pin #
2
3
6
7
11
12
15
16
38
37
36
35
29
28
27
26
34
33
32
31
25
24
23
22
9
5, 8, 13,18, 20, 30,
40, 42
PI3PCIE3412
Pin Name
A0+
A0–
A1+
A1–
A2+
A2–
A3+
A3–
B0+
B0−
B1+
B1−
B2+
B2−
B3+
B3−
C0+
C0–
C1+
C1–
C2+
C2–
C3+
C3−
SEL
V
DD
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
Pwr
Pwr
Description
Signal I/O, Channel 0, Port A
Signal I/O, Channel 1, Port A
Signal I/O, Channel 2, Port A
Signal I/O, Channel 3, Port A
Signal I/O, Channel 0, Port B
Signal I/O, Channel 1, Port B
Signal I/O, Channel 2, Port B
Signal I/O, Channel 3, Port B
Signal I/O, Channel 0, Port C
Signal I/O, Channel 1, Port C
Signal I/O, Channel 2, Port C
Signal I/O, Channel 3, Port C
Operation mode Select
(when SEL=0: A→B, when SEL=1: A→C
3.3V ±10% Positive Supply Voltage
Power ground
1, 4, 10,14, 17, 19, 21,
GND
39, 41, Center Pad
13-0046
2
www.pericom.com
04/15/13
PCI Express® 3.0 2-Lane,
2:1 Mux/DeMux Switch with Single Enable
Maximum Ratings
PI3PCIE3412
(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 +4.6V
.
Channel DC Input Voltage ................................................ –0.5V to 1.5V
DC Output Current ...................................................................... 120mA
.
Power Dissipation ........................................................................... 0.5W
SEL DC Input Voltage ....................................................... –0.5V to 4.6V
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. Expo-
sure to absolute maximum rating conditions for extended
periods may affect reliability.
Electrical Characteristics
Recommended Operating Conditions
Symbol
V
DD
I
DD
V
I/O
-DIF
V
I/O-CM
T
CASE
3.3V Power Supply
Total current from V
DD
3.3V supply
Differential Voltage (differential pins)
Common Mode Voltage (differiential pins)
Case temperature range for operation within spec.
0
-40
SEL = 0V or V
DD
Parameter
Conditions
Min
3.0
Typ
3.3
0.15
Max
3.6
1
1.6
0.8
85
Units
V
mA
V
ppd
V
Celsius
DC Electrical Characteristics for Switching over Operating Range
Parameters Description
VIH - SEL
VIL - SEL
VIK
IIH
IIL
IIN - SEL
IIH
IIL
IOZH
IOZL
CI/O-ON
RON
Input HIGH Voltage, SEL Input
Input LOW Voltage, SEL Input
Clamp Diode Voltage
Input HIGH Current, SEL
Input LOW Current, SEL
Input Leakage Current, SEL Input
Input HIGH Current, A
X
, B
X
, C
X
Input LOW Current, A
X
, B
X
, C
X
HighZ HIGH Current, B
X
, C
X
HighZ LOW Current, B
X
, C
X
ON state I/O capacitance
ON state resistance
V
DD
= 3.3V, IO = 8mA, V
IN
= 0.8V
V
DD
= Max., I
IN
= –18mA
V
DD
= Max., V
IN
= V
DD
V
DD
= Max., V
IN
= 0V
V
IN
= V
IH
- SEL Max or V
IL
- SEL Min
V
DD
= Max., V
IN
= 1.5V
V
DD
= Max., V
IN
= 0V
V
DD
= Max., V
IN
= 1.5V
V
DD
= Max., V
IN
= 0V
–10
–10
–10
–10
–10
1.5
5
Test Conditions
(1)
Min
2
0
Typ
(1)
Max
3.6
0.8
–0.7
–1.2
±5
±5
+10
+10
+10
+10
+10
Units
V
µA
µA
µA
µA
µA
pF
Ω
Note:
1. Typical values are at V
DD
= 3.3V, T
A
= 25°C ambient and maximum loading.
Switching Characteristics
Param-
eters
tPZH, tPZL
tPHZ , tPLZ
tb-b
tch-ch
13-0046
Description
Line Enable Time - SEL to AN, BN, CN
Line Disable Time - SEL to AN, BN, CN
Bit-to-bit skew within the same differential pair
Channel-to-channel skew
3
Test Conditions
Min.
2
0.5
Typ.
20
5
5
Max.
25
25
10
20
Units
ns
ps
ps
04/15/13
www.pericom.com
PCI Express® 3.0 2-Lane,
2:1 Mux/DeMux Switch with Single Enable
Dynamic Electrical Characteristics
Param-
eter
Description
Differential Insertion Loss
(V
IN
= -10dBm, DC = 0V)
PI3PCIE3412
Test Conditions
f= 50MHz - 1.25GHz
f=1.25GHz - 2.5GHz
f=2.5GHz - 4GHz
f=5GHz
f= 50MHz - 1.25GHz
Min.
Typ.
(1)
-0.8
-1.0
-1.3
-1.8
Max.
-1
-1.2
-1.6
-2.2
Units
DDIL
dB
-26.3
-21.4
-17.6
-16
-20
-18.4
-16.8
-9.6
-34.1
-30.5
-28.1
-27.2
-32.9
-26.7
-22
-20
-25
-23
-21
-12
-42.6
-38.1
-35.1
-34
4.0
4.0
GHz
8.0
8.0
8.2
GHz
dB
dB
dB
DDIL
OFF
Differential Off Isolation
f=1.25GHz - 2.5GHz
f=2.5GHz - 4GHz
f=5GHz
f= 50MHz - 1.25GHz
f=1.25GHz - 2.5GHz
f=2.5GHz - 4GHz
f=5GHz
f= 50MHz - 1.25GHz
f=1.25GHz - 2.5GHz
f=2.5GHz - 4GHz
f=5GHz
Insertion loss 1.5dB,
V
IN
=0.623Vpp, DC=0V
DDRL
Differential Return Loss
DDNEXT
Near End Crosstalk
V
I F
Max Signal Frequency Range
Insertion loss 1.5dB,
V
IN
=0.623Vpp, DC=0.9V
Insertion loss 3dB,
V
IN
=0.623Vpp, DC=0V
Insertion loss 3dB,
V
IN
=0.623Vpp, DC=0.9V
BW
-3dB Bandwidth
Notes:
1. Guaranteed by design. Typical values are at V
DD
= 3.3V , T
A
= 25°C ambient and maximum loading.
BALANCED
PORT1
–
+
+
BALANCED
PORT1
+
–
+
–
+
–
50
50
BALANCED
PORT1
BALANCED
PORT2
+
–
+
–
+ 50
– 50
+ 50
– 50
BALANCED
– PORT2
DUT
BALANCED
PORT2
DUT
DUT
Diff. Insertion Loss and Return Test
Circuit
13-0046
Diff. Off Isolation Test Circuit
Diff. Near End Xtalk Test Circuit
4
www.pericom.com
04/15/13
PCI Express® 3.0 2-Lane,
2:1 Mux/DeMux Switch with Single Enable
PI3PCIE3412
Differential Insertion Loss
Differential Return Loss
13-0046
5
www.pericom.com
04/15/13
