PI2PCIE2412 1.8V, PCI Express Gen2 Compliant, 4-Differential Channel, 2:1 Mux/DeMux Switch Features Description • • • • • • • • • Pericom Semiconductor’s PI2PCIE2412 is an 8 to 4 differential channel multiplexer/demultiplexer switch. This solution can switch 2 full PCI Express, Gen2, 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 negligible. 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. 4 Differential Channel, 2:1 Mux/DeMux PCI Express, Gen 2 Performance, 5.0Gbps Low Bit-to-Bit Skew , 7ps max (between '+' and '-' bits) Low Crosstalk: -23dB@3 GHz Low Off Isolation: -23dB@3 GHz VDD Operating Range: +1.5V to +1.8V ±10% ESD Tolerance: 5kV HBM I/O; 2kV HBM select pin Low channel-to-channel skew, 35ps max Packaging (Pb-free & Green): – 42-contact, TQFN (ZH42) Application Routing of PCI-Express, Gen2, signals with low signal attenuation. Pin Description A0+ B0+ A0- B0- A1+ B1+ A1- B1- VDD GND VDD GND Block Diagram GND A0+ A0GND VDD A1+ A1VDD SEL GND A2+ A2VDD GND A3+ A3GND C0+ C0C1+ C1- A2+ B2+ A2- B2- A3+ B3+ A3- B3C2+ C2C3+ C3- SEL Truth Table SEL AN to BN L AN to CN H 14-0036 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 B0+ B0B1+ B1C0+ C0C1+ C1VDD B2+ B2B3+ B3C2+ C2C3+ C3- 18 19 20 21 VDD GND VDD GND Function 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1 03/26/2014 www.pericom.com PI2PCIE2412 1.8V, PCI Express Gen2 Compliant, 4-Differential Channel, 2:1 Mux/DeMux Switch 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− I/O Description I/O Signal I/O, Channel 0, Port A I/O Signal I/O, Channel 1, Port A I/O Signal I/O, Channel 2, Port A I/O Signal I/O, Channel 3, Port A I/O Signal I/O, Channel 0, Port B I/O Signal I/O, Channel 1, Port B I/O Signal I/O, Channel 2, Port B I/O Signal I/O, Channel 3, Port B I/O Signal I/O, Channel 0, Port C I/O Signal I/O, Channel 1, Port C I/O Signal I/O, Channel 2, Port C I/O Signal I/O, Channel 3, Port C 9 SEL I VDD Pwr 1.5V to 1.8V (±0.1V) Positive Supply Voltage GND Pwr Power ground 5, 8, 13,18, 20, 30, 40, 42 1, 4, 10, 14, 17, 19, 21, 39, 41, Center Pad 14-0036 Operation mode Select (when SEL=0: A→B, when SEL=1: A→C 2 www.pericom.com 03/26/2014 PI2PCIE2412 1.8V, PCI Express Gen2 Compliant, 4-Differential Channel, 2:1 Mux/DeMux Switch 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 +2.5V DC Input Voltage ............................................................... –0.5V to VDD 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. DC Electrical Characteristics for Switching over Operating Range (TA = –40°C to +85°C, VDD = 1.5V to 1.8V ±10%) Parameters Test Conditions(1) Description Typ(2) Min Max Units 0.35 x VDD V 0.65 x VDD VIH Input HIGH Voltage Guaranteed HIGH level VIL VIK Input LOW Voltage Guaranteed LOW level Clamp Diode Voltage VDD = Max., IIN = –18mA IIH Input HIGH Current VDD = Max., VIN = VDD ±5 IIL Input LOW Current VDD = Max., VIN = GND ±5 –0.5 –0.7 –1.2 µA Power Supply Characteristics Parameters IDD Test Conditions(1) Description Quiescent Power Supply Current Typ.(2) Min. VDD = Max., VIN = GND or VDD Max. Units 350 µA Switching Characteristics (TA= -40º to +85ºC, VDD = 1.8V±10%) Parameters Description Min. Max. Units tPZH, tPZL Line Enable Time - SEL to AN, BN, CN 0.5 8.0 tPHZ, tPLZ Line Disable Time - SEL to AN, BN, CN 0.5 8.0 tb-b Bit-to-bit skew within the same differential pair 7 ps tch-ch Channel-to-channel skew 35 ps ns Dynamic Electrical Characteristics Over the Operating Range (TA= -40º to +85ºC, VDD = 1.8V±10%, GND=0V) Parameters Description Test Conditions Min. Typ.(2) XTALK Crosstalk See Fig. 1 for Measurement Setup, f= 3 GHz f = 100 MHz -23dB -58dB OIRR OFF Isolation See Fig. 2 for Measurement Setup, f= 3 GHz f = 100 MHz -23dB -58dB ILOSS Differential Insertion Loss f= 3 GHz BW Bandwidth -3dB Max. Units dB -2 dB 4.1 GHz Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VDD = 1.8V, Ta = 25°C ambient and maximum loading. 14-0036 3 www.pericom.com 03/26/2014 PI2PCIE2412 1.8V, PCI Express Gen2 Compliant, 4-Differential Channel, 2:1 Mux/DeMux Switch HP4396B R S T HP11667A PI2PCIE2412 50-ohm 100 -ohm 50-ohm 50-ohm 100 -ohm Fig 1. Crosstalk Setup HP4396B R S T HP11667A 50-ohm PI2PCIE2412 50-ohm 50-ohm 100 -ohm Fig 2. Off-isolation setup 14-0036 4 www.pericom.com 03/26/2014 PI2PCIE2412 1.8V, PCI Express Gen2 Compliant, 4-Differential Channel, 2:1 Mux/DeMux Switch Fig 3. Crosstalk Fig 4. Off Isolation 14-0036 5 www.pericom.com 03/26/2014 PI2PCIE2412 1.8V, PCI Express Gen2 Compliant, 4-Differential Channel, 2:1 Mux/DeMux Switch Fig 5. Insertion Loss 14-0036 6 www.pericom.com 03/26/2014 PI2PCIE2412 1.8V, PCI Express Gen2 Compliant, 4-Differential Channel, 2:1 Mux/DeMux Switch Test Circuit for Electrical Characteristics(1-5) 2 x VDD VDD 200-ohm VIN Pulse Generator VOUT D.U.T 4pF CL RT 200-ohm Notes: 1. CL = Load capacitance: includes jig and probe capacitance. 2. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator 3. Output 1 is for an output with internal conditions such that the output is low except when disabled by the output control. output 2 is for an output with internal conditions such that the output is high except when disabled by the output control. 4. All input impulses are supplied by generators having the following characteristics: PRR ≤ MHz, ZO = 50Ω, tR ≤ 2.5ns, tF ≤ 2.5ns. 5. The outputs are measured one at a time with one transition per measurement. Switching Waveforms SEL VDD/2 VDD/2 VDD 0V Output 1 tPZL tPLZ VDD/2 VOH VOL + 0.15V tPHZ tPZH VOH – 0.15V VDD/2 VOL VOH VOL Output 2 Voltage Waveforms Enable and Disable Times Switch Positions Test Switch tPLZ, tPZL (output on B-side) 2 x VDD tPHZ, tPZH (output on B-side) GND Prop Delay Open 14-0036 7 www.pericom.com 03/26/2014 PI2PCIE2412 1.8V, PCI Express Gen2 Compliant, 4-Differential Channel, 2:1 Mux/DeMux Switch Test Circuit for Dynamic Electrical Characteristics Port1 Network Analyzer Port2 D.U.T. Applications Information Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd PCI Express Application Specific Measurements and Test Set-up Figure 5: Test Setup 14-0036 8 www.pericom.com 03/26/2014 PI2PCIE2412 1.8V, PCI Express Gen2 Compliant, 4-Differential Channel, 2:1 Mux/DeMux Switch Figure 6: 5 Gbps RX signal eye of the PCI-SIG compliance software test using PI2PCIE2412 + 16" test card Figure 7. 5 Gbps RX signal eye of the PCI-SIG compliance software test with no switch + w/ 16" test card 14-0036 9 www.pericom.com 03/26/2014 PI2PCIE2412 1.8V, PCI Express Gen2 Compliant, 4-Differential Channel, 2:1 Mux/DeMux Switch Packaging Mechanical: 42-Contact TQFN (ZH) Notes: 1. All dimensions are in millimeters. Angles in degrees. 2. Coplanarity applies to the exposed pad as well as the terminals. 3. Refer JEDEC MO-220. 4. Recommended land pattern is for reference only. 5. Thermal pad soldering area DATE: 11/14/12 DESCRIPTION: 42-contact Thin Fine Pitch Quad Flat No-Lead (TQFN) PACKAGE CODE: ZH42 DOCUMENT CONTROL #: PD-2035 REVISION:D 12-0529 Ordering Information Ordering Code PI2PCIE2412ZHEX Package Code Package Description ZH 42-contact, Thin Fine Pitch Quad Flat No-Lead (TQFN) Notes: • Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ • "E" denotes Pb-free and Green • Adding an "X" at the end of the ordering code denotes tape and reel packaging Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com 14-0036 10 www.pericom.com 03/26/2014