18QHTF21-43.001-PD

Oscillators Overview

The 18QHTF21-43.001-PD is a standard LVCMOS crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 43.001 MHz with a supply voltage of 1.8V. The device features a Standby (Power Down) control function and is housed in a compact 4-SMD, No Lead package with dimensions corresponding to the SMD2016-4P form factor.

Oscillators Feature Summary

• Standardized LVCMOS output logic for digital interface compatibility
• Integrated standby mode allowing power down via external control signal
• Compact surface-mount design suitable for space-constrained PCB layouts

Oscillators Applications

• General-purpose clock generation in embedded systems
• Timing reference for microcontrollers and processors
• Data communication interfaces requiring precise frequency standards

Oscillators Procurement Notes

Verify the specific suffix 'PD' indicates the Standby (Power Down) functionality as distinct from other variants like 'OE'. Confirm the operating temperature range and load capacitance requirements against the official datasheet before integration. Ensure the 1.8V supply voltage aligns with the target system's power rails.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V LVCMOS oscillator with power-down capability is required. The 43.001 MHz frequency is specific; ensure it matches the system timing needs. Consider the SMD2016-4P footprint for layout compatibility. Compare with OE variants if enable/disable logic differs from standby requirements.

Oscillators Part Context

This part belongs to the 18QHTF21 series of Mercury Electronics oscillators. The series offers various frequencies and control options. The 'PD' suffix specifically denotes the power-down feature, differentiating it from models with enable/disable controls or those without control pins. It is a standardized solution for modern low-power applications.

Oscillators Replacement Considerations

Direct substitutes include the 18QHTF21-43.000-OE, though it uses Enable/Disable rather than Standby. Other frequency variants in the 18QHTF21 series may share the same package but require frequency verification. Always check pinout and control logic compatibility before swapping.