18QHTF21-60.300-PD

Overview

The 18QHTF21-60.300-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 60.3 MHz with an LVCMOS output logic level. The device supports a supply voltage of 1.8V and features a standby power-down function to reduce consumption. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. The unit exhibits a frequency stability of ±50ppm and functions within an operating temperature range of -40°C to 85°C, drawing a maximum supply current of 24mA.

Feature Summary

• Supports low-voltage operation at 1.8V with integrated standby mode for power management
• Provides stable LVCMOS clock signals with high frequency accuracy
• Utilizes a miniature surface-mount footprint suitable for dense PCB layouts

Applications

• High-speed digital signal processing systems
• Communication equipment requiring precise timing references
• Embedded control units in consumer electronics

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply rail can maintain stability under peak current loads of 24mA. Ensure the PCB land pattern matches the 4-SMD no-lead package specifications to guarantee proper solder joint integrity during assembly.

Selection Notes

Select this component when a small form factor and low power consumption are critical constraints. The 1.8V logic compatibility makes it suitable for modern low-voltage microcontrollers. Consider the ±50ppm stability limit for applications where tighter jitter or phase noise specifications might require a TCXO variant instead.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies while maintaining consistent electrical characteristics and package dimensions. The '-PD' suffix indicates the inclusion of a power-down pin functionality, distinguishing it from standard continuous-operation variants within the same family.

Replacement Considerations

Direct replacements must match the 60.3 MHz frequency, 1.8V supply, and 4-SMD package. Verify that substitute components support LVCMOS outputs and similar thermal ranges. Cross-reference pinouts to ensure the power-down control signal aligns correctly with the host system design.