18QHTF21-25.500-PD

Oscillators Overview

The 18QHTF21-25.500-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 25.5 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and includes a standby or power-down function to manage energy consumption. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm. This component is suitable for applications requiring precise clock signals in space-constrained electronic designs.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby mode functionality for power management
• Utilizes a small form factor 4-SMD no-lead package

Oscillators Applications

• General purpose clock signal generation
• Embedded systems requiring low voltage operation
• Portable electronic devices with space constraints

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure that the 1.8V supply voltage aligns with your system's power rails. Confirm that the LVCMOS output levels are compatible with the receiving logic inputs. Check for any specific RoHS compliance documentation if required by your manufacturing standards.

Oscillators Selection Notes

Select this component when a 25.5 MHz clock source is required with a 1.8V operating voltage. Consider the 2.0x1.6mm footprint for PCB layout constraints. Evaluate the need for standby functionality if power efficiency is a priority. Compare performance metrics such as phase noise and stability against alternative oscillators if high precision is critical for the application.

Oscillators Part Context

This part belongs to the QHTF series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies and supply voltages. The '18' prefix typically indicates the 1.8V supply variant. The 'PD' suffix denotes the package type or specific revision. These oscillators are designed for reliability in consumer and industrial electronics.

Oscillators Replacement Considerations

Direct replacements must match the 25.5 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and electrical characteristics. Consult manufacturer cross-reference lists for verified substitutes.