18QHTF21-76.270-PD

Overview

The 18QHTF21-76.270-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 76.27 MHz with LVCMOS output logic. The device supports a supply voltage range and features a 1.8V standby power-down mode. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The component functions reliably within an operating temperature range of -40°C to 85°C.

Feature Summary

• Compact 2.0mm x 1.6mm surface mount package
• LVCMOS output logic interface
• 1.8V standby power-down capability
• Wide industrial temperature range operation

Applications

• General purpose timing clock generation
• Embedded system clock sources
• Consumer electronics timing circuits
• Industrial control board synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 4-SMD no-lead package footprint matches your PCB layout constraints. Ensure the supply voltage specifications align with your system's power rails. Check for any specific reflow soldering profile recommendations provided in the official datasheet to ensure reliable assembly and long-term performance.

Selection Notes

Select this component when a small form factor is critical for space-constrained designs. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the wide temperature range if the application operates in variable environmental conditions. Verify that the 76.27 MHz frequency meets the precise timing requirements of the target system without requiring additional frequency multiplication or division stages.

Part Context

This part belongs to the 18QHTF21 series of surface mount crystal oscillators from Mercury Electronics. The series offers various frequency options within a standardized 2.0mm x 1.6mm package. The '-PD' suffix indicates the inclusion of a power-down feature for energy management. This family is designed for applications requiring stable timing in compact electronic devices.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with identical pinouts and electrical characteristics but different frequencies, such as 18QHTF21-51.200-PD or 18QHTF21-77.760-PD, provided the frequency difference is acceptable for the application.