PI2PCIE2412 1.8V, PCI Express Gen-II Compliant, 4-Differential Channel, 2:1 Mux/DeMux Switch, w/ Single Enable Features Description • • • • • • • • • Pericom Semiconductor’s PI2PCIE2412 is an 8 to 4 differential channel multiplexer/demultiplexer switch. This solution can switch 2 full PCI Express, Gen-II, 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 II Performance, 5.0Gbps Low Bit-to-Bit Skew , 7ps max (between '+' and '-' bits) Low Crosstalk: -23dB@3 GHz Low Off Isolation: -23dB@3 GHz VCC Operating Range: +1.5V to +2.0V ESD Tolerance: 8kV 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, Gen-II, signals with low signal attenuation. Pin Description A0 A1 A2 A3 B0 B1 B2 B3 C0 C1 C2 C3 A4 A5 A6 B4 B5 B6 B7 A7 VDD GND VDD GND Block Diagram GND A0 A1 GND VDD A2 A3 VDD SEL GND A4 A5 VDD GND A6 A7 GND C4 C5 C6 C7 SEL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 42 41 40 39 GND 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 B0 B1 B2 B3 C0 C1 C2 C3 VDD B4 B5 B6 B7 C4 C5 C6 C7 18 19 20 21 Function SEL AN to BN L AN to CN H VDD GND VDD GND Truth Table 1 PS8866B 10/19/06 PI2PCIE2412 1.8V, PCI Express Gen-II 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 VCC 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, VCC = 1.5V to 2.0V) Paramenter Description Test Conditions(1) Min Typ(2) Max Units 0.35 x VCC V VIH Input HIGH Voltage Guaranteed HIGH level 0.65 x VCC VIL Input LOW Voltage Guaranteed LOW level –0.5 VIK Clamp Diode Voltage VCC = Max., IIN = –18mA IIH Input HIGH Current VCC = Max., VIN = VCC ±5 IIL Input LOW Current VCC = Max., VIN = GND ±5 –0.7 –1.2 μA Power Supply Characteristics Parameters ICC Test Conditions(1) Description Quiescent Power Supply Current Min. Typ.(2) VCC = Max., VIN = GND or VCC Max. 200 Units μA Dynamic Electrical Characteristics Over the Operating Range (TA= -40º to +85ºC, VCC = 1.8V±10%, GND=0V) Parameter Description Test Conditions Min. Typ.(2) 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 XTALK 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 VCC = 1.8V, TA = 25°C ambient and maximum loading. 2 PS8866B 10/19/06 PI2PCIE2412 1.8V, PCI Express Gen-II 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 3 PS8866B 10/19/06 PI2PCIE2412 1.8V, PCI Express Gen-II Compliant, 4-Differential Channel, 2:1 Mux/DeMux Switch Fig 3. Crosstalk Fig 4. Off Isolation 4 PS8866B 10/19/06 PI2PCIE2412 1.8V, PCI Express Gen-II Compliant, 4-Differential Channel, 2:1 Mux/DeMux Switch Fig 5. Insertion Loss 5 PS8866B 10/19/06 PI2PCIE2412 1.8V, PCI Express Gen-II Compliant, 4-Differential Channel, 2:1 Mux/DeMux Switch Switching Characteristics (TA= -40º to +85ºC, VCC = 1.8V±10%) Paramenter Description Min. Max. Units tPZH, tPZL tPHZ, tPLZ tb-b Line Enable Time - SEL to AN, BN 0.5 8.0 Line Disable Time - SEL to AN, BN 0.5 8.0 Bit-to-bit skew within the same differential pair 7 ps tch-ch Channel-to-channel skew 35 ps ns Test Circuit for Electrical Characteristics(1-5) 2 x VCC VCC 200-ohm Pulse Generator VIN 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 VCC SEL VCC/2 VCC/2 0V Output 1 tPZL tPLZ VCC/2 VOH VOL + 0.15V tPHZ tPZH VOH – 0.15V VCC/2 VOL VOH VOL Output 2 Voltage Waveforms Enable and Disable Times Switch Positions Test Switch tPLZ, tPZL (output on B-side) 2 x VCC tPHZ, tPZH (output on B-side) GND Prop Delay Open 6 PS8866B 10/19/06 PI2PCIE2412 1.8V, PCI Express Gen-II Compliant, 4-Differential Channel, 2:1 Mux/DeMux Switch Test Circuit for Dynamic Electrical Characteristics S1 HP4396B or Equivalent R1 T1 PI2PCIE2412 HP11667A 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 7 PS8866B 10/19/06 PI2PCIE2412 1.8V, PCI Express Gen-II 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 8 PS8866B 10/19/06 PI2PCIE2412 1.8V, PCI Express Gen-II Compliant, 4-Differential Channel, 2:1 Mux/DeMux Switch Packaging Mechanical: 42-Contact TQFN (ZH) Ordering Information Ordering Code PI2PCIE2412ZHE Package Code Package Description ZH Pb-free & Green, 42-contact 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 9 PS8866B 10/19/06