18QHTF21-25.00145-PD

Oscillators Overview

The 18QHTF21-25.00145-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 25.00145 MHz and utilizes LVCMOS output logic. The device is designed for surface mount applications, featuring a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. It functions with a supply voltage of 1.8V and includes a standby or power-down capability to manage energy consumption effectively.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V for efficient power management
• Integrates standby mode functionality to reduce power consumption during idle periods
• Utilizes LVCMOS output logic for compatibility with standard digital interfaces

Oscillators Applications

• General-purpose clock generation in embedded systems
• Timing reference sources for microprocessors and microcontrollers
• Data communication interface synchronization

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Cross-reference the manufacturer datasheet for precise electrical characteristics and thermal specifications to guarantee reliable operation under intended conditions.

Oscillators Selection Notes

Select this component when a precise 25.00145 MHz timing source is required within space-constrained designs. The choice is driven by the need for low-power operation via the standby feature and the convenience of surface-mount integration. Consider the LVCMOS output level compatibility with downstream logic families. Evaluate the operating temperature range to ensure stability across the expected environmental conditions of the final application.

Oscillators Part Context

This part belongs to the QHTF series of high-frequency oscillators from Mercury Electronics. The series is characterized by small form factors and low power consumption, targeting portable and industrial electronics. The 'PD' suffix indicates the inclusion of a power-down pin, distinguishing it from continuous-operation variants within the same family. These components are engineered for stability and reliability in demanding electronic environments.

Oscillators Replacement Considerations

Direct substitutes must match the 25.00145 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package dimensions. Verify equivalent frequency stability and operating temperature ranges. Check if alternative manufacturers offer compatible pin-outs and electrical specifications. Ensure any replacement maintains the standby functionality if power management is critical to the design.