18QHTF21-34.5504-PD

Oscillators Overview

The 18QHTF21-34.5504-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 34.5504 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features a power-down standby function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Includes power-down standby capability
• Provides LVCMOS digital output signals

Oscillators Applications

• General-purpose clock signal generation
• Embedded system timing references
• Digital circuit synchronization

Oscillators Procurement Notes

Verify the specific operating temperature range and frequency stability specifications directly from the manufacturer's official datasheet before integration. Confirm that the 1.8V supply requirement aligns with the target system's power architecture. Ensure the 4-SMD no-lead package footprint matches the PCB design constraints to avoid assembly issues.

Oscillators Selection Notes

Select this component when a precise 34.5504 MHz reference is required for LVCMOS-compatible circuits. The choice is driven by the need for a small 2.0x1.6mm form factor and low-power standby functionality. Evaluate thermal performance and load capacitance requirements against the host system's design parameters to ensure reliable oscillation.

Oscillators Part Context

This part belongs to the Mercury Electronics XO series, designed for surface-mount applications. The model number indicates a 34.5504 MHz frequency and 1.8V operation. The 'PD' suffix denotes the inclusion of a power-down control feature, distinguishing it from continuous-operation variants within the same product family.

Oscillators Replacement Considerations

Direct substitutes must match the 34.5504 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter before swapping components.