18QHTF21-21.837885-OE

Oscillators Overview

The 18QHTF21-21.837885-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 21.837885 MHz with LVCMOS output logic. The device supports a supply voltage of 1.8V and features an enable/disable control function. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0mm x 1.6mm. The component is designed for surface mount applications and offers high stability for timing clock requirements.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes enable/disable pin for power management control
• Compact 4-SMD no-lead surface mount package design

Oscillators Applications

• General purpose timing clock generation
• Embedded system microcontroller clocks
• Digital signal processing circuits

Oscillators Procurement Notes

Verify the specific frequency tolerance and operating temperature range against the official datasheet before integration. Confirm that the 1.8V supply voltage aligns with the target circuit design. Ensure the 4-SMD package footprint matches the PCB layout constraints. Check for any specific ordering suffixes that may alter electrical characteristics or packaging options.

Oscillators Selection Notes

Select this component when a precise 21.837885 MHz reference is required for low-voltage digital systems. The LVCMOS output ensures direct interfacing with standard logic families without additional level shifting. The enable feature allows for dynamic power saving in battery-operated devices. Consider the thermal performance within the -40°C to 85°C range for industrial environments.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The series includes various crystal oscillators and filters tailored for telecommunications and consumer electronics. Mercury Electronics has been a pioneer in the Taiwan crystal industry since 1973, providing reliable timing solutions.

Oscillators Replacement Considerations

Direct substitutes include other 21.837885 MHz LVCMOS oscillators in 4-SMD packages from compatible manufacturers. Verify pinout compatibility and electrical specifications such as current consumption and load capacitance. Cross-reference with similar Mercury models like 18QHTF21-21.200-OE if frequency flexibility exists.