18QHTF21-42.780-PD

Oscillators Overview

The 18QHTF21-42.780-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 42.780 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a Standby (Power Down) control function to manage power consumption. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Oscillators Feature Summary

• Supports Low Voltage CMOS (LVCMOS) output logic for digital interfacing
• Includes Standby or Power Down functionality for energy management
• Utilizes a surface-mount 4-SMD No Lead package design

Oscillators Applications

• General clock signal generation in electronic circuits
• Timing reference for low-voltage digital systems
• Embedded devices requiring compact oscillator solutions

Oscillators Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the target application circuit before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the LVCMOS output swing is compatible with the receiving logic inputs. Check for any specific handling precautions related to the small form factor package during assembly.

Oscillators Selection Notes

Select this component when a precise 42.780 MHz timing source is required within a constrained physical footprint. The choice is driven by the need for low-voltage operation at 1.8V and the integration of power-down capabilities. Consider the LVCMOS interface compatibility with downstream digital components. Evaluate the thermal performance and stability requirements against the standard XO specifications provided in the official datasheet.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on miniature surface-mount oscillators. The series typically offers various frequencies and voltage options within a standardized 2.0x1.6mm package. Mercury Electronics is a specialized manufacturer of frequency control products, including crystals and oscillators, with a long history in the industry.

Oscillators Replacement Considerations

Direct replacements must match the 42.780 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package dimensions. Verify pinout compatibility and electrical characteristics such as phase noise and jitter if critical. Cross-reference with other manufacturers offering similar ultra-small form factor oscillators with standby functions.