SNAS635F
December 2013 – August 2025
LMK00334
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
Timing Requirements, Propagation Delay, and Output Skew
5.7
Typical Characteristics
6
Parameter Measurement Information
6.1
Differential Voltage Measurement Terminology
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Crystal Power Dissipation vs RLIM
7.3.2
Clock Inputs
7.3.3
Clock Outputs
7.3.3.1
Reference Output
7.4
Device Functional Modes
7.4.1
VCC and VCCO Power Supplies
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.1.1
Driving the Clock Inputs
8.2.1.2
Crystal Interface
8.2.2
Detailed Design Procedure
8.2.2.1
Termination and Use of Clock Drivers
8.2.2.2
Termination for DC-Coupled Differential Operation
8.2.2.3
Termination for AC-Coupled Differential Operation
8.2.3
Application Curve
8.3
Power Supply Recommendations
8.3.1
Current Consumption and Power Dissipation Calculations
8.3.1.1
Power Dissipation Example: Worst-Case Dissipation
8.3.2
Power Supply Bypassing
8.3.2.1
Power Supply Ripple Rejection
8.4
Layout
8.4.1
Layout Guidelines
8.4.2
Layout Example
8.4.3
Thermal Management
9
Device and Documentation Support
9.1
Documentation Support
9.1.1
Related Documentation
9.2
Receiving Notification of Documentation Updates
9.3
Support Resources
9.4
Trademarks
9.5
Electrostatic Discharge Caution
9.6
Glossary
10
Revision History
11
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
RTV|32
MPQF166B
Thermal pad, mechanical data (Package|Pins)
RTV|32
QFND448B
Orderable Information
snas635f_oa
snas635f_pm
Data Sheet
LMK00334
Four-Output Clock Buffer and Level Translator for PCIe® Gen 1 to Gen 7