18QHTF21-61.781-PD

Overview

The 18QHTF21-61.781-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 61.781 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby function for power down control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Integrates LVCMOS output interface for digital signal compatibility
• Features low voltage operation at 1.8V for energy efficiency
• Includes standby capability to reduce power consumption during idle states

Applications

• High-speed data communication systems requiring precise clock signals
• Embedded processors and microcontrollers needing stable timing references
• Consumer electronics utilizing low-power surface-mount components

Procurement Notes

Verify the specific ordering suffix PD against the manufacturer's official documentation to ensure correct packaging and tape-and-reel specifications. Confirm that the 1.8V supply requirement aligns with the target system's power rails before procurement. Cross-reference the 4-SMD no-lead footprint with PCB design guidelines to ensure proper soldering and thermal management.

Selection Notes

Select this component when a 61.781 MHz frequency is strictly required for system synchronization. Ensure the application environment supports the operating temperature range specified in the datasheet. Consider the small 2.0x1.6 mm package size for space-constrained designs. Verify that the LVCMOS output swing matches the input thresholds of the receiving logic circuitry.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies within a standardized 4-SMD no-lead form factor. Mercury Electronics specializes in quartz frequency control products, leveraging decades of manufacturing expertise in Taiwan to produce reliable timing solutions for industrial and consumer markets.

Replacement Considerations

Direct substitutes must match the 61.781 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Check pinout compatibility and electrical characteristics such as phase noise and jitter if available in competitor datasheets.