18QHTF21-75.355-PD

Overview

The 18QHTF21-75.355-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 75.355 MHz and utilizes LVCMOS output logic levels. The device is designed for low-power applications, featuring a supply voltage of 1.8V and supporting a standby or power-down mode to reduce energy consumption during idle periods. It is housed in a compact 4-SMD, no-lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby functionality for power management
• Utilizes a lead-free SMD package for automated assembly

Applications

• Digital signal processing systems
• Communication equipment clock sources
• Embedded microcontroller timing references

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the system design specifications before procurement. Confirm that the 1.8V supply voltage aligns with the target platform's power rails. Ensure the 4-SMD no-lead footprint matches the PCB land pattern to guarantee proper solder joint formation and mechanical stability during operation.

Selection Notes

Select this component when a precise 75.355 MHz reference is required with low power consumption constraints. The LVCMOS output ensures direct interfacing with standard digital logic families without additional level shifting. Consider the operating temperature range and package dimensions to ensure compatibility with the enclosure and thermal management strategy of the final electronic assembly.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on high-stability crystal oscillators. The series typically offers various frequency options within a standardized small form factor. The manufacturer emphasizes quartz crystal expertise, providing reliable timing solutions for consumer and industrial electronics requiring consistent clock signals.

Replacement Considerations

The 3QHTF21-75.355-OE is listed as an equivalent or alternate part number. Verify pinout compatibility and electrical parameter alignment before substitution. Ensure the alternative package type matches the existing PCB layout to avoid rework.