18QHTF21-2.224-PD

Oscillators Overview

The 18QHTF21-2.224-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fundamental frequency of 2.224 MHz and utilizes LVCMOS output logic levels. The device is designed for low voltage operation at 1.8V and includes a standby or power-down control function to minimize energy consumption when not in use. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm, suitable for surface-mount assembly on printed circuit boards.

Oscillators Feature Summary

• Supports low voltage operation at 1.8V for efficient power management
• Includes standby or power-down functionality to reduce active current draw
• Features LVCMOS output compatibility for direct interfacing with digital logic

Oscillators Applications

• Portable electronic devices requiring low power consumption
• Embedded systems utilizing LVCMOS logic interfaces
• Compact consumer electronics with strict size constraints

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before procurement. Confirm that the 1.8V supply voltage aligns with your target platform's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout guidelines. Check for any specific reflow soldering profile recommendations provided in the official datasheet to ensure reliable assembly.

Oscillators Selection Notes

Select this component when a precise 2.224 MHz clock signal is required for LVCMOS-compatible circuits. The choice is driven by the need for a small form factor and low voltage operation. Consider the standby feature if power efficiency is critical. Verify that the operating temperature range meets your environmental specifications. Compare against other oscillators in the same series for alternative frequencies or voltage options.

Oscillators Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronic Ind. Co., Ltd. The series is characterized by its small 2.0x1.6mm footprint and support for various standard frequencies. Mercury Electronics is a established manufacturer of frequency control products, offering quartz crystals and oscillators. This specific model represents a standard XO variant with power-down capability.

Oscillators Replacement Considerations

Direct replacements must match the 2.224 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and electrical characteristics such as rise/fall times and duty cycle. Consult the manufacturer's cross-reference list for approved substitutes. Ensure any alternative part supports the same standby control functionality.