18QHTF21-13.5515-PD

Overview

The 18QHTF21-13.5515-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 13.5515 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby power-down function to conserve energy. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. This component is engineered for timing applications requiring low voltage operation and precise frequency stability.

Feature Summary

• Integrates LVCMOS output logic for digital interface compatibility
• Supports standby power-down mode for energy efficiency
• Utilizes a compact 4-SMD no-lead surface mount package

Applications

• Battery-powered portable electronic devices
• Digital signal processing circuits
• Communication equipment requiring stable clock signals

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the system design specifications before procurement. Ensure that the 1.8V supply voltage aligns with the target circuit's power rails. Confirm that the 4-SMD no-lead package footprint matches the PCB layout constraints. Cross-reference the datasheet for operating temperature ranges to ensure environmental suitability for the intended application environment.

Selection Notes

Select this model when a low-voltage 1.8V oscillator is required for space-constrained designs. The 13.5515 MHz frequency suits specific timing or communication protocols. Consider the standby feature if power management is critical. Compare against other Mercury QHTF series variants for different voltage levels or frequencies if the exact specification does not match the system needs.

Part Context

This part belongs to the Mercury QHTF series of quartz crystal oscillators. The series offers various frequencies and voltage options, including 1.8V, 2.5V, and 3.3V variants. The 'PD' suffix indicates the inclusion of a power-down control pin. These oscillators are designed for general-purpose timing applications in consumer electronics and industrial systems.

Replacement Considerations

Direct substitutes include other 13.5515 MHz LVCMOS oscillators from Mercury with identical 1.8V ratings and 2.0x1.6mm packages. Verify pinout compatibility and electrical characteristics before substitution.