18QHTF21-74.212912-PD

Overview

The 18QHTF21-74.212912-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 74.212912 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Integrates standby and power-down functionality
• Utilizes LVCMOS output logic interface

Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded microcontroller timing

Procurement Notes

Verify the specific suffix 'PD' confirms the inclusion of the power-down feature as documented. Ensure the operating temperature range meets system requirements. Confirm that the 1.8V supply voltage aligns with the target circuit design before finalizing procurement orders.

Selection Notes

Select this component when a precise 74.212912 MHz reference is required in space-constrained designs. The choice is driven by the need for low-power consumption via the standby mode and the compatibility of LVCMOS outputs with standard digital logic families.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in frequency control products. The series offers various frequencies within a small 2.0x1.6mm footprint, catering to modern portable electronics and high-density circuit board applications requiring reliable timing sources.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with identical pinout and dimensions but different frequencies, such as 18QHTF21-30.300-PD or 18QHTF21-51.200-PD, provided the frequency requirement can be adjusted.