Document
Features
• 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)
Block Diagram
A0+ B0+ A0- B0A1+ B1+ A1- B1-
C0+ C0C1+ C1-
A2+ B2+ A2- B2A3+ B3+ A3- B3-
C2+ C2C3+ C3-
SEL
Truth Table
Function AN to BN AN to CN
SEL L H
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PI3PCIE3412
3.3V, PCI Express® 3.0 2-Lane, 2:1 Mux/DeMux Switch, with Single Enable
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
Application
Routing of PCI Express 3.0, DP1.2, USB3.0, SAS2.0, SATA3.0, XAUI, RXAUI signals with low signal attenuation.
Pin Configuration (Top-side view)
DDV GND DDV GND
GND A0+ A0GND VDD A1+ A1VDD SEL GND A2+ A2VDD GND A3+ A3GND
42 41 40 39 1 38 2 37 3 36 4 35 5 34 6 33 7 32 8 31 9 30 10 29 11 28 12 27 13 26 14 25 15 24 16 23 17 22
18 19 20 21
B0+ B0B1+ B1C0+ C0C1+ C1VDD B2+ B2B3+ B3C2+ C2C3+ C3-
DDV GND DDV GND
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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
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−
9 SEL
5, 8, 13,18, 20, 30, 40, 42 1, 4, 10,14, 17, 19, 21, 39, 41, Center Pad
VDD GND
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
PI3PCIE3412
PCI Express® 3.0 2-Lane, 2:1 Mux/DeMux Switch with Single Enable
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
13-0046
2 www.pericom.com 04/15/13
PI3PCIE3412
PCI Express® 3.0 2-Lane, 2:1 Mux/DeMux Switch with Single Enable
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 +4.6V 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. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
Electrical Characteristics Recommended Operating Conditions
Symbol
Parameter
Conditions
Min Typ Max Units
VDD
IDD VI/O-DIF VI/O-CM TCASE
3.3V Power Supply
Total current from VDD 3.3V supply Differential Voltage (differential pins) Common Mode Voltage (differiential pins) Case temperature range for operation within spec.
SEL = 0V or VDD
3.0 3.3 3.6
V
0.15 1
mA
1.6 Vppd
0 0.8 V -40 85 Celsius
DC Electrical Characteristics for Switching over Operating Range
Parameters Description
Test Conditions(1)
VIH - SEL VIL - SEL VIK IIH
Input HIGH Voltage, SEL Input Input LOW Voltage, SEL Input Clamp Diode Voltage Input HIGH Current, SEL
VDD = Max., IIN = –18mA VDD = Max., VIN = VDD
IIL Input LOW Current, SEL
VDD = Max., VIN = 0V
IIN - SEL
Input Leakage Current, SEL Input VIN = VIH - SEL Max or VIL - SEL Min
IIH Input HIGH Current, AX, BX, CX VDD = Max., VIN = 1.5V
IIL
Input LOW Current, AX, BX, CX
VDD = Max., VIN = 0V
IOZH
HighZ HIGH Current, BX, CX
VDD = Max., VIN = 1.5V
IOZL
HighZ LOW Current, BX, CX
VDD = Max., VIN = 0V
CI/O-ON
ON state I/O capacitance
RON
ON state resistance
VDD = 3.3V, IO = 8mA, VIN = .