18QHTF21-33.45621-PD

Oscillators Overview

The 18QHTF21-33.45621-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 33.45621 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and features a standby power-down mode to reduce current consumption during inactive periods. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• Provides stable clock signal generation at 33.45621 MHz using LVCMOS interface
• Supports low-power operation through dedicated standby and power-down modes
• Utilizes a compact 4-SMD no-lead surface mount package for space-constrained designs

Oscillators Applications

• General purpose digital circuit timing
• Microcontroller clock sources
• Communication interface synchronization

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before ordering. Confirm that the 1.8V supply voltage aligns with your target platform's power rails. Ensure the 4-SMD footprint matches your PCB layout constraints. Check for any specific RoHS compliance documentation if required by your manufacturing standards.

Oscillators Selection Notes

Select this component when a fixed 33.45621 MHz clock source is required with minimal power consumption. The LVCMOS output ensures compatibility with standard digital logic families operating at 1.8V. Consider the physical size of the 2.0x1.6 mm package for board space optimization. This part is suitable for applications where precise frequency stability is needed without the complexity of programmable oscillators.

Oscillators Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequency options within a standardized small outline package. The series is designed for consumer electronics and portable devices where size and power efficiency are critical. The 'PD' suffix indicates the inclusion of a power-down control feature, distinguishing it from continuous-operation variants.

Oscillators Replacement Considerations

Direct replacements must match the 33.45621 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm footprint. Verify pinout compatibility and electrical characteristics such as phase noise and jitter specifications. Cross-reference with other manufacturers offering similar ultra-small form factor oscillators with standby functionality.