18QHTF21-28.500-PD

Oscillators Overview

The 18QHTF21-28.500-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 28.5 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and includes a standby or power-down function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Integrates standby mode for power management
• Features LVCMOS output compatibility

Oscillators Applications

• Embedded systems requiring precise clock signals
• Portable electronic devices utilizing low-power components
• Communication modules needing stable frequency references

Oscillators Procurement Notes

Verify the specific orderable part number against official Mercury Electronics documentation to ensure correct frequency and package configuration. Confirm that the LVCMOS output type matches the target circuit requirements. Check for any suffix variations that may indicate different packaging or temperature ranges. Ensure the 1.8V supply voltage aligns with the system design constraints before finalizing procurement.

Oscillators Selection Notes

Select this component when a small form factor is required alongside low power consumption. The 2.0x1.6 mm footprint suits space-constrained designs. Verify that the LVCMOS interface is compatible with the receiving logic levels. Consider the standby feature if power efficiency during idle periods is a critical design parameter for the application.

Oscillators Part Context

This model belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies within a standardized 4-SMD no-lead package. The PD suffix typically denotes the inclusion of a power-down control pin, distinguishing it from continuous-operation variants in the same physical housing.

Oscillators Replacement Considerations

Direct replacements must match the 28.5 MHz frequency, 1.8V supply, and LVCMOS output. Compatible alternatives should offer identical 2.0x1.6 mm dimensions and support standby functionality. Verify pinout compatibility to ensure seamless integration without PCB redesign.