1

www.diodes.com

September 2022

Diodes Incorporated

PI6CB184Q

Document Number DS41705 Rev 4-2

A Product Line of

Diodes Incorporated

PI6CB184Q

4-Output PCIe Gen 4 Clock Buffer for Automotive Applications

PLL

SS

OSC

XTAL_IN/CLK

XTAL_OUT

SCLK

SDATA

OE[3:0]#

CTRL

LOGIC

Q0

Q1

Q2

Q3

REFOUT

SADR

SS_SEL_TRI

PD#

b

P

Lead-free Green

Features

y

1.8V Supply Voltage

y

HCSL Input: 100MHz, also support 50MHz or 125MHz via

SMBus

y

4 Differential Low Power HCSL Outputs with on-chip

Termination

y

Individual Output Enable

y

Programmable Slew Rate and Output Amplitude for each

output

y

Differential Outputs blocked until PLL is locked

y

Strapping pins or SMBus for configuration

y

3.3V Tolerant SMBus Interface Support

y

Very Low Jitter Outputs

à

Differential cycle-to-cycle jitter <50ps (Grade 2)

à

Differential output-to-output skew <50ps

à

PCIe

® Gen 1/Gen 2/Gen 3/Gen 4 compliant

y

AEC-Q100 qualified, supports Automotive Grade 2 and 1

y

Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

y

Halogen and Antimony Free. “Green” Device (Note 3)

y

The DIODES™ PI6CB184Q is suitable for automotive

applications requiring specific change control; this part is

AEC-Q100 qualified, PPAP capable, and manufactured in

IATF 16949 certified facilities.

https://www.diodes.com/quality/product-definitions/

y

Packaging (Pb-free & Green):

à

32-contact TQFN 5×5mm (SWP) with Sidewall Plating

Block Diagram

Description

The PI6CB184Q is an 4-output very low power PCIe Gen 1/Gen

2/Gen 3/Gen 4 clock buffer. It takes an reference input to fanout

four 100MHz low power differential HCSL outputs with on-chip

terminations. The on-chip termination can save 16 external resis-

tors and make layout easier. Individual OE pin for each output

provides easier power management.

It uses proprietary PLL design to achieve very low jitter that

meets PCIe Gen 1/Gen 2/Gen 3/Gen 4 requirements. Other than

PCIe 100MHz support, this device also support Ethernet applica-

tion with 50MHz or 125MHz via SMBus. It provides various op-

tions such as different slew rate and amplitude through strapping

pins or SMBUS so that users can configure the device easily to

get the optimized performance for their individual boards. This

device is optimized for Automotive designs.

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.

DIODES is a trademark of Diodes Incorporated in the United States and other countries.

The Diodes logo is a registered trademark of Diodes Incorporated in the United States and other countries.

PCI Express

® and PCIe® are trademarks or registered trademarks and/or service marks of PCI-SIG Corporation.