18QHTF21-28.750-PD

Oscillators Overview

The 18QHTF21-28.750-PD is a 28.75 MHz crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates with an LVCMOS output logic and supports a supply voltage of 1.8V. The device features 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.

Oscillators Feature Summary

• Supports LVCMOS output logic
• Includes Standby (Power Down) functionality
• Compact 4-SMD No Lead package

Oscillators Applications

• General clock signal generation
• Digital circuit timing reference
• Embedded system clock sources

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application design specifications. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 2.0x1.6 mm footprint matches the PCB layout constraints. Check for any specific RoHS compliance documentation if required by the manufacturing process.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a precise 28.75 MHz clock signal. The small 2.0x1.6 mm form factor makes it suitable for space-constrained designs. Consider the LVCMOS interface compatibility with downstream digital logic. The standby feature allows for power management strategies in portable or battery-operated devices.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various standard frequencies tailored for digital applications. The 'PD' suffix indicates the inclusion of a power-down pin or control mechanism. These components are designed for high reliability in consumer electronics and industrial equipment.

Oscillators Replacement Considerations

Direct substitutes within the same series include other frequency variants such as 18QHTF21-51.200-PD or 18QHTF21-8.000-PD, provided the frequency difference is acceptable. Cross-referencing with other manufacturers requires matching the 1.8V supply, LVCMOS output, and 4-SMD package dimensions.