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| PI2PCIE2412 1.8V, PCI Express Gen-II Compliant, 4-Differential Channel, 2:1 Mux/DeMux Switch, w/ Single Enable Features * * * * * * * * * 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) 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. Application Routing of PCI-Express, Gen-II, signals with low signal attenuation. Block Diagram A0 A1 A2 A3 B0 B1 B2 B3 C0 C1 C2 C3 B4 B5 B6 B7 C4 C5 C6 C7 SEL Pin Description VDD GND VDD GND 42 41 40 39 A4 A5 A6 A7 GND A0 A1 GND VDD A2 A3 VDD SEL GND A4 A5 VDD GND A6 A7 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 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 Truth Table Function AN to BN AN to CN SEL L H VDD GND VDD GND 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 ....................................................-65C to +150C 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 = -40C to +85C, VCC = 1.5V to 2.0V) Paramenter VIH VIL VIK IIH IIL Description Input HIGH Voltage Input LOW Voltage Clamp Diode Voltage Input HIGH Current Input LOW Current Test Conditions(1) Guaranteed HIGH level Guaranteed LOW level VCC = Max., IIN = -18mA VCC = Max., VIN = VCC VCC = Max., VIN = GND Min 0.65 x VCC -0.5 -0.7 0.35 x VCC -1.2 5 5 A V Typ(2) Max Units Power Supply Characteristics Parameters ICC Description Quiescent Power Supply Current Test Conditions(1) VCC = Max., VIN = GND or VCC Min. Typ.(2) 200 Max. Units A Dynamic Electrical Characteristics Over the Operating Range (TA= -40 to +85C, VCC = 1.8V10%, GND=0V) Parameter XTALK OIRR ILOSS BW Description Crosstalk OFF Isolation Differential Insertion Loss Bandwidth -3dB Test Conditions See Fig. 1 for Measurement Setup, f= 3 GHz f = 100 MHz See Fig. 2 for Measurement Setup, f= 3 GHz f = 100 MHz f= 3 GHz Min. Typ.(2) -23dB -58dB -23dB -58dB -2 4.1 Max. Units dB dB 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 = 25C 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 S HP11667A 50-ohm 50-ohm 50-ohm R PI2PCIE2412 100 -ohm T 100 -ohm Fig 1. Crosstalk Setup HP4396B S HP11667A 50-ohm 50-ohm 50-ohm 100 -ohm R T PI2PCIE2412 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= -40 to +85C, VCC = 1.8V10%) Paramenter tPZH, tPZL tPHZ, tPLZ tb-b tch-ch Description Line Enable Time - SEL to AN, BN Line Disable Time - SEL to AN, BN Bit-to-bit skew within the same differential pair Channel-to-channel skew Min. 0.5 0.5 Max. 8.0 8.0 7 35 Units ns ps ps Test Circuit for Electrical Characteristics(1-5) 2 x VCC VCC 200-ohm Pulse Generator VIN D.U.T RT VOUT 4pF CL 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 = 50, tR 2.5ns, tF 2.5ns. 5. The outputs are measured one at a time with one transition per measurement. Switching Waveforms SEL VCC/2 tPZL VCC/2 0V Output 1 tPLZ VOH VCC VCC/2 tPZH tPHZ VOL + 0.15V VOH - 0.15V VOL VOH VOL VCC/2 Output 2 Voltage Waveforms Enable and Disable Times Switch Positions Test tPLZ, tPZL (output on B-side) tPHZ, tPZH (output on B-side) Prop Delay Switch 2 x VCC GND 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 HP4396B or Equivalent S1 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 ZH Package Description 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 |
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