Pb
Lead-free Green
A product Line of
Diodes Incorporated
PI6CG33402C
3.3V Very-Low Power 4-Output PCIe Clock Generator With On-chip Termination
Features
ÎÎ3.3V Supply Voltage
ÎÎCrystal/CMOS Input: 25MHz
ÎÎFour Differential Low-Power HCSL Outputs with On-chip
Termination
ÎÎDefault ZOUT = 85Ω
ÎÎIndividual Output Enable
ÎÎReference CMOS Output
ÎÎProgrammable Slew Rate and Output Amplitude for each
Output
ÎÎDifferential Outputs Blocked until PLL is Locked
ÎÎSelectable 0%, -0.25%, or -0.5% Spread on Differential Outputs
ÎÎStrapping pins or SMBus for Configuration
ÎÎDifferential Output-to-Output Skew <50ps
ÎÎVery-Low Jitter Outputs
àà Differential Cycle-to-Cycle Jitter <50ps
àà PCIe Gen1/Gen2/Gen3/Gen4/Gen5 Compliant
àà CMOS REFOUT Phase Jitter
• < 0.3ps RMS, SSC off
• <1.5ps RMS, SSC on
ÎÎTotally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
ÎÎHalogen and Antimony Free. “Green” Device (Note 3)
ÎÎFor automotive applications requiring specific change control
(i.e. parts qualified to AEC-Q100/101/200, PPAP capable,
and manufactured in IATF 16949 certified facilities), please
contact us or your local Diodes representative.
https://www.diodes.com/quality/product-definitions/
ÎÎPackaging (Pb-free & Green):
àà 32-lead 5mm × 5mm TQFN
Description
ThePI6CG33402Cisafour-outputvery-lowpowerPCIeGen1/Gen2/
Gen3/ Gen4/ Gen5 clock generator. It uses 25MHz crystal or CMOS
reference as an input to generate the 100MHz low-power differ-
ential HCSL outputs with on-chip terminations. The on-chip ter-
mination can save 16 external resistors and make layout easier.
An additional buffered reference output is provided to serve as a
low-noise reference for other circuitry.
It uses Diodes' proprietary PLL design to achieve very-low
jitter that meets PCIe Gen1/Gen2/Gen3/Gen4/Gen5 require-
ments. It also provides various options such as different slew rate
and amplitude through SMBUS, so users can configure the de-
vice easily to get the optimized performance for their individual
boards. The device also supports selectable spread-spectrum
options to reduce EMI for various applications.
Block Diagram
OE[3:0]#
REFOUT
XTAL_IN/CLK
XTAL_OUT
SCLK
SDATA
SADR
SS_SEL_TRI
PD#
OSC
PLL
SS
CTRL
LOGIC
Q3
Q2
Q1
Q0
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm
antimony compounds.
PI6CG33402C
Document Number DS42294 Rev 3-2
www.diodes.com
January 2020
1 Diodes Incorporated
