GND 39 21 GND VDD 40 20 VDD GND 41 19 GND VDD 42 18 VDD PI2PCIE2422 PCI Express Gen II Compliant, 8-Differential Channel Switch with 8:4 Mux/DeMux Option Features Description 8 Differential Channel SPST switch with Mux/DeMux option Pericom semiconductors PI2PCIE2422 is an 8 to 4 channel differential multiplexer/demultiplexer featuring 8-channel pass- PCI Express Gen II performance through. It supports two full PCI Express lanes at 5.0Gbps Gen Low Bit-to-Bit Skew: 10ps (between +/- signals) II performance. Low Crosstalk: -15dB 3.0 GHz Low Off Isolation: -26db 3.0 GHz With the select control input low Port A connects to Port B, and V Operating Range: +1.4V to +1.8V 10% DD Port C connects to port D for an 8-channel differential pass-though. ESD Tolerance >2kV HBM When the select control input is high Port A connects to Port D, and Packaging (Pb-free & Green): 42-contact TQFN (ZH42) Port B and Port C are in a high-impedance state. The mux/demux function is between Port A and Ports B or D as determined by the select input control. Truth Table Function SEL Ax = Bx L Cx = Dx Ax = Dx H B = C = Hi-Z Block Diagram Pin Diagram SEL A0 1 38 B0 B0 A1 2 37 B1 B1 A0 C0 3 36 D0 A1 C1 4 35 D1 C0 D0 C1 D1 A2 5 34 B2 A3 6 33 B3 B2 B3 A2 C2 7 32 D2 A3 C3 8 31 D3 GND C2 D2 9 30 VDD SEL C3 D3 10 29 B4 A4 B4 28 B5 A5 11 B5 A4 A5 27 D4 C4 12 26 D5 C5 13 C4 D4 C5 D5 25 B6 A6 14 24 B7 A7 15 B6 B7 A6 23 D6 C6 16 A7 22 D7 C7 17 C6 D6 C7 D7 www.pericom.com 04/02/2014 14-0035 1PI2PCIE2422 PCI Express Gen II Compliant, 8-Differential Channel Switch with 8:4 Mux/DeMux Option Pin Description Pin Pin Name I/O Description 1, 2 A0, A1 I/O Signal I/O (typically a differential pair) 3, 4 C0, C1 I/O Signal I/O (typically a differential pair) 5, 6 A2, A3 I/O Signal I/O (typically a differential pair) 7, 8 C2, C3 I/O Signal I/O (typically a differential pair) 10, 11 A4, A5 I/O Signal I/O (typically a differential pair) 12, 13 C4, C5 I/O Signal I/O (typically a differential pair) 14, 15 A6, A7 I/O Signal I/O (typically a differential pair) 16, 17 C6, C7 I/O Signal I/O (typically a differential pair) 22, 23 D7, D6 I/O Signal I/O (typically a differential pair) 24, 25 B7, B6 I/O Signal I/O (typically a differential pair) 26, 27 D5, D4 I/O Signal I/O (typically a differential pair) 28,29 B5, B4 I/O Signal I/O (typically a differential pair) 31, 32 D3, D2 I/O Signal I/O (typically a differential pair) 33, 34 B3, B2 I/O Signal I/O (typically a differential pair) 35, 36 D1, D0 I/O Signal I/O (typically a differential pair) 37, 38 B1, B0 I/O Signal I/O (typically a differential pair) 9 SEL I Operation mode Select (when SEL=0: AB, CD, when SEL=1: AD, B & C=Hi-Z) 18, 20, 30, 40, 42 V Pwr 1.8V positive supply voltage DD 19, 21, 39, 41 GND Pwr Power ground www.pericom.com 04/08/2014 14-0035 2