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Renesas Electronics Corporation

Renesas’ Timing product portfolio has been acquired by SiTime.

Datasheets, documentation, and sample orders remain available on Renesas.com through late 2026. For new designs, purchasing, support, and product inquiries, visit SiTime.com or send an email to SalesClocks@sitime.com. Full transition to SiTime is expected by late 2026.

2:1 Multiplexer Chip For PCI-Express GEN1

Package Information

CAD Model:View CAD Model
Pkg. Type:TSSOP
Pkg. Code:PGG16
Lead Count (#):16
Pkg. Dimensions (mm):5.0 x 4.4 x 1.0
Pitch (mm):0.65

Environmental & Export Classifications

Moisture Sensitivity Level (MSL)1
Pb (Lead) FreeYes
ECCN (US)EAR99
HTS (US)8542.39.0090

Product Attributes

Lead Count (#)16
Carrier TypeTube
Moisture Sensitivity Level (MSL)1
Qty. per Reel (#)0
Qty. per Carrier (#)96
Pb (Lead) FreeYes
Pb Free Categorye3 Sn
Temp. Range (°C)0 to 70°C
Accepts Spread Spec InputYes
App Jitter CompliancePCIe Gen1
ArchitectureCommon
C-C Jitter Typ P-P (ps)65
Core Voltage (V)3.3
Diff. Input SignalingHCSL
Diff. Inputs2
Diff. Output SignalingHCSL
Diff. Outputs1
Diff. Termination Resistors4
FunctionMultiplexer
Input Freq (MHz)200
Input TypeHCSL
Inputs (#)2
Length (mm)5
MOQ192
Output Banks (#)1
Output Freq Range (MHz)200
Output TypeHCSL, LVDS
Output Voltage (V)3.3
Outputs (#)1
PLLNo
Package Area (mm²)22
Pitch (mm)0.65
Pkg. Dimensions (mm)5.0 x 4.4 x 1.0
Pkg. TypeTSSOP
Power Consumption Typ (mW)132
Product CategoryClock Multiplexers, PCI Express Clocks
Prog. ClockNo
Requires Terms and ConditionsDoes not require acceptance of Terms and Conditions
Supply Voltage (V)3.3 - 3.3
Tape & ReelNo
Thickness (mm)1
Width (mm)4.4

Description

The 557-08 is a 2:1 multiplexer chip that allows the user to select one of the two HCSL (Host Clock Signal Level) input pairs and fans out to one pair of differential HCSL or LVDS outputs. This chip is suited especially for PCI-Express applications, where there is a need to select the PCI-Express clock either locally from the PCI-E card or from the motherboard.