DATASHEET Four Output Low Power Differential Fanout Buffer for 9DBL411B PCI Express Gen1, Gen2, Gen3, and QPI General Description: Features/Benefits: The ICS9DBL411B is a 4 output lower power differential Low power differential outputs for PCI- buffer. Each output has its own OE pin. It has a maximum Express and QPI clocks operating frequency of 150 MHz. Power down mode when all OE are high Recommended Application: Available in I-temp PCI-Express Gen 1/2/3 or QPI fanout buffer 20-pin MLF or TSSOP packaging Output Features: 4 - low power differential output pairs Individual OE control of each output pair Key Specifications: Output cycle-cycle jitter < 15ps additive Output to output skew: < 50ps Power Groups Pin Number (TSSOP) Description VDD GND 9,18 10,17 VDD IO for DIF(3:0) 4 5 3.3V Analog VDD & GND Pin Number (MLF) Description VDD GND 6,15 7,14 VDD IO for DIF(3:0) 1 2 3.3V Analog VDD & GND Functional Block Diagram 4 OE (3:0) 4 DIF INT STOP DIF LPR(3:0) LOGIC DIF INC IDT Four Output Low Power Differential Buffer for PCI Express Gen1, Gen2, Gen3, and QPI 1645G09/25/18 19DBL411B Four Output Low Power Differential Buffer for PCI Express Gen1, Gen2, Gen3, and QPI Advance Information Pin Configurations OE0 1 20 DIF0T LPR 20 19 18 17 16 DIF INC 2 19 DIF0C LPR VDDA 1 15 VDD IO DIF INT 3 18 VDD IO GNDA 2 14 GND VDDA 4 17 GND OE3 3 13 OE1 GNDA 5 16 OE1 9DBL411B DIF3C LPR 4 12 DIF1T LPR OE3 6 15 DIF1T LPR DIF3T LPR 5 11 DIF1C LPR DIF3C LPR 7 14 DIF1C LPR 67 89 10 DIF3T LPR 8 13 OE2 VDD IO 9 12 DIF2T LPR GND 10 11 DIF2C LPR 20-pin MLF 20-pin TSSOP Terminations Zo Rs 9DBL411 Zo Rs Zo 17 = Rs (ohms), where Zo is the single-ended intrinsic impedance of the board transmission line. Single-ended intrinsic impedance is that of the differential impedance. Single Ended Rs Impedance 5% Rs (Zo) tolerance 2% tolerance Notes 50 33 33.2 In general, 5% resistors 45 27 27.4 may be used. All values are 42.5 24 or 27 24.9 in ohms. IDT Four Output Low Power Differential Buffer for PCI Express for Gen1, Gen2, Gen3, and QPI 1645G09/25/18 2 VDD IO DIF INT GND DIF INC DIF2C LPR OE0 DIF2T LPR DIF0T LPR OE2 DIF0C LPR 9DBL411B