18QHTF21-4.516-PD

Oscillators Overview

The 18QHTF21-4.516-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 4.516 MHz and utilizes LVCMOS output logic. The device is designed for low-power applications, featuring a supply voltage of 1.8V and a standby power-down mode. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0x1.6mm. This component is suitable for timing clock applications requiring precise frequency control in portable electronics.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby power-down mode to reduce energy consumption
• Utilizes a compact 4-SMD no-lead surface mount package

Oscillators Applications

• Timing clock generation for portable electronic devices
• Battery-powered equipment requiring low current draw
• General-purpose digital circuit synchronization

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before procurement. Ensure the 1.8V supply voltage aligns with your target platform's power rails. Confirm that the 4-SMD no-lead package footprint matches your PCB layout constraints. Cross-reference the datasheet for operating temperature range specifications to guarantee reliability under intended environmental conditions.

Oscillators Selection Notes

Select this component when a 4.516 MHz reference signal is required with minimal power consumption. The 1.8V operation makes it appropriate for modern low-voltage digital systems. Consider the small 2.0x1.6mm footprint if space is limited on the circuit board. The LVCMOS output ensures direct interfacing with standard logic inputs without additional level shifting.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic, which specializes in quartz crystals and oscillators. The series typically offers various frequencies within a standardized low-profile package. Mercury Electronic is a Taiwan-based manufacturer established in 1973, focusing on frequency control products including TCXOs and VCTCXOs for global markets.

Oscillators Replacement Considerations

Direct substitutes must match the 4.516 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and thermal characteristics. Alternative models from other manufacturers may require schematic adjustments if output drive strength or package dimensions differ.