18QHTF21-66.734-PD

Overview

The 18QHTF21-66.734-PD is a 66.734 MHz crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a supply voltage of 1.8V and utilizes LVCMOS output logic. The component features a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. Key functional attributes include standby capability for power down operations. This surface-mount device is designed for applications requiring precise frequency generation within space-constrained electronic systems.

Feature Summary

• Supports standby mode for power management
• Utilizes LVCMOS output interface
• Compact 4-SMD no lead package design

Applications

• General purpose clock signal generation
• Embedded system timing references
• Consumer electronics internal clocks

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system'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. Validate the operating temperature range suitability for your intended environment.

Selection Notes

Select this component when a 66.734 MHz reference is required in a minimal footprint. The 1.8V operation suits low-power digital circuits. Consider the LVCMOS compatibility with downstream logic inputs. The standby feature allows for power optimization in battery-operated devices. Evaluate thermal performance within the small package size for high-density boards.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies in a standardized 2.0x1.6 mm SMD package. The series typically supports 1.8V operation and LVCMOS outputs. The 'PD' suffix indicates the inclusion of power-down functionality. Similar parts in the series differ primarily in their nominal oscillation frequencies while maintaining consistent physical and electrical characteristics.

Replacement Considerations

Direct substitutes must match the 66.734 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical specifications of alternative sources. Ensure the replacement also supports the standby function if utilized in the design.