A product Line of
Diodes Incorporated
b
P
Lead-free Green
PI6C557-03
PCI Express Clock
Features
Description
e PI6C557-03 is a spread spectrum clock generator supporting
PCI Express and Ethernet requirements. e device is used for
PC or embedded systems to substantially reduce Electromagnetic
Interference (EMI).
ꢀÎLVDS compatible outputs
ꢀÎSupply voltage of 3.3V 10%
ꢀÎ25MHz input frequency
ꢀÎHCSL outputs, 0.7V Current mode differential pair
ꢀÎJitter 60ps cycle-to-cycle (typ)
ePI6C557-03providestwodifferential(HCSL)spreadspectrum
outputs. e PI6C557-03 is configured to select spread and clock
selection. Using Pericom's patented Phase-Locked Loop (PLL)
techniques, the device takes a 25MHz crystal input and produces
two pairs of differential outputs (HCSL) at 25MHz, 100MHz,
125MHz and 200MHz clock frequencies. It also provides spread
selection of 0.25%, -0.5%, -0.75%, and no spread.
ꢀÎSpread of 0.25%, -0.5%, -0.75%, and no spread
ꢀÎIndustrial temperature range
ꢀÎTotally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
ꢀÎHalogen and Antimony Free. “Green” Device (Note 3)
ꢀÎFor 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/
ꢀÎPackaging: (Pb-free and Green)
à 16-pin, TSSOP (L)
Block Diagram
VDD
2
SS1:SS0
S1:S0
CLK0
CLK0
2
2
Control
Logic
Phase Lock Loop
CLK1
CLK1
X1/CLK
Crystal
Driver
25 MHz
crystal or clock
X2
2
GND
Pulling
Capacitors
RR
OE
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.
www.diodes.com
October 2020
Diodes Incorporated
PI6C557-03
Document Number DS43154 Rev 1-2
1