SNAS944
August 2025
LMK3H2104
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
I2C Characteristics
6
Parameter Measurement Information
6.1
LP-HCSL Test or Simulation Loads
6.2
LVDS Test Load
6.3
LVCMOS Test Load
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
GPI/GPIO
7.3.1.1
GPI/GPIO Pin Functions
7.3.1.2
GPI/GPIO Configurations
7.3.1.3
I2C Address Through GPI/GPIO
7.3.1.4
GPIO Pins In 3-Level Input Mode
7.3.1.5
GPI/GPIO Internal Pullup And Pulldown
7.3.2
OTP
7.3.2.1
OTP Overview
7.3.2.2
OTP Page Selection
7.3.2.3
OTP Page Selection Timing
7.3.2.4
Output Behaviors During Dynamic OTP Page Change
7.3.3
PWRGD/PWRDN#
7.3.3.1
PWRGD/PWRDN# Function Assignment
7.3.3.2
PWRGD
7.3.3.3
PWRDN#
7.3.4
Power Supply
7.3.4.1
Power Supply Pin Mapping
7.3.4.2
Unused Power Supply Pins
7.3.5
Power Up Sequence
7.3.5.1
Power Up Sequence
7.3.6
Output Enable And Disable
7.3.6.1
OE Registers
7.3.6.2
OE Group Assignment
7.3.6.3
OE AND Logic
7.3.6.4
Alternative OE
7.3.6.5
OE Polarity
7.3.6.6
Single LVCMOS OE
7.3.6.7
LOS And Output Behaviors
7.3.7
PERST#
7.3.7.1
PERST# Buffer Mode
7.3.7.2
PERST# Latching
7.3.8
Status Signals
7.3.8.1
CLK_READY
7.3.8.2
Input LOS
7.3.8.3
Output Frequency Detection
7.3.8.4
CRC_ERROR
7.3.8.5
Status Event Registers
7.3.8.6
Device Interrupt
7.3.8.7
Status Signals From GPIO
7.3.9
Input Receiver
7.3.9.1
GPI Input And Clock Input
7.3.9.2
Clock Input Configuration And Termination
7.3.9.3
Differential Clock Inputs
7.3.9.4
Fail-Safe Input
7.3.10
Input Switching
7.3.10.1
Automatic Switching
7.3.10.2
Manual Switching
7.3.11
Output MUX
7.3.11.1
Clock Output MUX Settings
7.3.12
Output Driver
7.3.12.1
Output Formats
7.3.12.2
1.2V LVCMOS Output
7.3.12.3
LVCMOS Output Impedance
7.3.12.4
Programmable Slew Rate
7.3.12.5
Output Polarities
7.3.12.6
Double Terminated LP-HCSL Outputs
7.3.12.7
AC- And DC-LVDS
7.3.12.8
LVDS Output Common Mode
7.3.12.9
Output Disable States
7.3.12.10
Output Behaviors During Change of State
7.3.13
Output Synchronization
7.3.13.1
Output Synchronization
7.3.13.2
Synchronous And Asynchronous OE
7.3.14
Output Phase Shift
7.3.15
Dynamic Frequency Change
7.3.15.1
FOD Configuration Update
7.3.15.2
Channel Divider Update
7.3.15.3
DCO Mode
7.4
SSC
7.5
Device Functional Modes
7.5.1
Fractional Output Divider
7.5.1.1
FOD Operation
7.5.1.2
Edge Combiner
7.5.1.3
Integer Boundary Spurs
7.5.2
Buffer Only Mode
7.6
Programming
7.6.1
I2C Serial Interface
7.6.2
Vendor ID
7.6.3
OTP Programming
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Application Block Diagram Example
8.2.2
Design Requirements
8.2.3
Detailed Design Procedure
8.2.4
Application Performance Plots
8.3
Power Supply Recommendations
8.4
Layout
8.4.1
Layout Guidelines
8.4.2
Layout Example
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
11.1
Tape and Reel Information
Package Options
Mechanical Data (Package|Pins)
RGE|24
MPQF124G
Thermal pad, mechanical data (Package|Pins)
RGE|24
QFND797
Orderable Information
snas944_oa
Data Sheet
LMK3H2104
4-Output PCIe Gen 1-7 Compliant Low jitter General Purpose BAW Clock Generator