PI2PCIE412-D Enhanced, 1.8V, PCIe®, 4-Differential Channel, 2:1 Mux/DeMu Switch, w/ Single Enable Features Description • • • • • • • • • Pericom Semiconductor’s PI2PCIE412-D is an 8 to 4 differential channel multiplexer/demultiplexer switch. This solution can switch 2 full PCI Express® 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® signal compliance Low Bit-to-Bit Skew , 10ps max (between '+' and '-' bits) Low Crosstalk: -65dB@10 MHz Low Off Isolation: -65dB@10 MHz VDD 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 Switch a PCIe® lane output between two PCI Express lane inputs. Block Diagram Pin Description VDD GND VDD GND 0B1 A0 A1 A2 A3 1B1 2B1 3B1 GND A0 A1 GND VDD A2 A3 VDD SEL GND A4 A5 VDD GND A6 A7 GND 0B2 1B2 2B2 3B2 4B1 5B1 6B1 7B1 A4 A5 A6 A7 4B2 5B2 6B2 7B2 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 0B1 1B1 2B1 3B1 0B2 1B2 2B2 3B2 VDD 4B1 5B1 6B1 7B1 4B2 5B2 6B2 7B2 18 19 20 21 Function SEL AN to NB1 L AN to NB2 H 13-0004 VDD GND VDD GND Truth Table 1 PS8788C 12/07/12 PI2PCIE412-D Enhanced, 1.8V, PCIe®, 4-Differential Channel, 2:1 Mux/DeMux Switch, w/ 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 +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 2.0V) Paramenter Test Conditions(1) Description Min Typ(2) Max Units 0.35 x VDD V VIH Input HIGH Voltage Guaranteed HIGH level 0.65 x VDD 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 ICC Test Conditions(1) Description Quiescent Power Supply Current Min. Typ.(2) VDD = Max., VIN = GND or VDD Max. 200 Units µA Dynamic Electrical Characteristics Over the Operating Range (TA= -40º to +85ºC, VDD = 1.8V±10%, GND=0V) Parameter Description Test Conditions Min. Typ.(2) XTALK Crosstalk See Fig. 1 for Measurement Setup, f = 10 MHz -65 OIRR OFF Isolation See Fig. 2 for Measurement Setup, f = 10 MHz -65 BW Bandwidth @ –3dB Max. Units dB 1.4 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. 13-0004 2 PS8788C 12/07/12 PI2PCIE412-D Enhanced, 1.8V, PCIe®, 4-Differential Channel, 2:1 Mux/DeMux Switch, w/ Single Enable HP4396B R S T HP11667A PI2PCIE412-D 50-ohm 100 -ohm 50-ohm 50-ohm 100 -ohm Fig 1. Crosstalk Setup HP4396B R S T HP11667A 50-ohm PI2PCIE412-D 50-ohm 50-ohm 100 -ohm Fig 2. Off-isolation setup 13-0004 3 PS8788C 12/07/12 PI2PCIE412-D Enhanced, 1.8V, PCIe®, 4-Differential Channel, 2:1 Mux/DeMux Switch, w/ Single Enable Fig 3. Crosstalk Fig 4. Off Isolation 13-0004 4 PS8788C 12/07/12 PI2PCIE412-D Enhanced, 1.8V, PCIe®, 4-Differential Channel, 2:1 Mux/DeMux Switch, w/ Single Enable Switching Characteristics (TA= -40º to +85ºC, VDD = 1.8V±10%) Paramenter Description Min. Max. Units tPZH, tPZL Line Enable Time - SEL to AN, BN 0.5 8.0 tPHZ, tPLZ Line Disable Time - SEL to AN, BN 0.5 4.0 tb-b Bit-to-bit skew within the same differential pair 10 ps tch-ch Channel-to-channel skew 35 ps ns Test Circuit for Electrical Characteristics(1-5) 2 x VDD VDD 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 SEL Output 1 VDD/2 VDD/2 tPZL VDD2 tPLZ tPHZ tPZH VOH – 0.15V VDD/2 Output 2 VOL + 0.15V VDD 0V VOH VOL VOH VOL 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 13-0004 5 PS8788C 12/07/12 PI2PCIE412-D Enhanced, 1.8V, PCIe®, 4-Differential Channel, 2:1 Mux/DeMux Switch, w/ Single Enable Test Circuit for Dynamic Electrical Characteristics HP4396B or Equivalent S1 R1 T1 PI2PCIE412-D HP11667A Applications Information Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd PCI Express Application Specific Measurements and Test Set-up Motherboard TP1 The trace on test card is 22.5" or 13.7” 50-ohm termination to ground TP2 Root Complex Chipset + PCI-Express Drivers One pair of the upstream Tx signal 4.5" trace m o ric Pe – Capacitors te rd oa b st PI2PCIE412-D PCI-Express 1x Connector Figure 5: Test Setup 13-0004 6 PS8788C 12/07/12 PI2PCIE412-D Enhanced, 1.8V, PCIe®, 4-Differential Channel, 2:1 Mux/DeMux Switch, w/ Single Enable Figure 6: The worst non-transition signal eye (left) and the worst transition signal eye (right) of the PCI-SIG compliance software test using PI2PCIE412-D + 22.5" test card Figure 7. The worst non-transition signal eye (left) and the worst transition signal eye (right) of the PCI-SIG compliance software test with no switch + w/ 22.5" test card 13-0004 7 PS8788C 12/07/12 PI2PCIE412-D Enhanced, 1.8V, PCIe®, 4-Differential Channel, 2:1 Mux/DeMux Switch, w/ Single Enable Figure 8: The worst non-transition signal eye (left) and the worst transition signal eye (right) of the PCI-SIG compliance software test using PI2PCIE412-D + 13.7" test card Figure 9: The worst non-transition signal eye (left) and the worst transition signal eye (right) of the PCI-SIG compliance software test with no switch + 13.7" test card 13-0004 8 PS8788C 12/07/12 PI2PCIE412-D Enhanced, 1.8V, PCIe®, 4-Differential Channel, 2:1 Mux/DeMux Switch, w/ Single Enable 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 PI2PCIE412-DZHE 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 13-0004 All trademarks are property of their respective owners. 9 PS8788C 12/07/12