18QHTF21-13.505-PD

Overview

The 18QHTF21-13.505-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd, operating at a frequency of 13.505 MHz. It utilizes LVCMOS output logic and functions with a 1.8V supply voltage. The device supports a standby or power-down mode for energy efficiency. It is housed in a compact 4-SMD, No Lead package designed for surface mount applications. The component operates within a temperature range of -40°C to 85°C and exhibits a frequency stability of ±50ppm. Maximum supply current is rated at 24mA.

Feature Summary

• Supports low-voltage operation at 1.8V with LVCMOS output compatibility
• Includes standby and power-down functionality for reduced power consumption
• Designed for surface mount assembly using a leadless 4-SMD package

Applications

• General clock signal generation in embedded systems
• Timing reference for digital communication interfaces
• Power management circuits requiring precise frequency control

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to ensure correct voltage and output logic configuration. Confirm that the 4-SMD no-lead package dimensions align with PCB footprint requirements. Check for RoHS compliance status if restricted substances are a concern. Ensure the operating temperature range meets the environmental conditions of the target application. Validate frequency stability specifications against system timing tolerances before finalizing procurement.

Selection Notes

Select this component when a 13.505 MHz clock source is required with low voltage constraints. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the ±50ppm stability for applications where moderate precision is sufficient. The surface mount form factor aids in automated assembly processes. Evaluate the power-down feature if battery life or thermal management is critical.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options. The PD suffix typically indicates specific packaging or operational characteristics defined by the manufacturer. This model provides a balance between performance and size for modern electronic designs.

Replacement Considerations

Direct substitutes may include other 13.505 MHz LVCMOS oscillators in similar packages. Verify pinout compatibility and electrical parameters before substitution. Cross-reference with Mercury Electronics' official replacement lists for guaranteed interoperability.