18QHTF21-43.560-PD

Oscillators Overview

The 18QHTF21-43.560-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd, operating at a nominal frequency of 43.56 MHz. It utilizes an LVCMOS output logic and functions with a supply voltage of 1.8V. The device features a power-down capability for standby mode control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. The component exhibits a frequency stability of 50 ppm and has a maximum supply current of 23 mA, designed for applications requiring precise timing signals.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes power-down functionality to reduce power consumption during standby
• Utilizes a crystal base resonator for stable frequency generation

Oscillators Applications

• RFID reader clock signal generation
• Wireless communication module timing
• Industrial control system synchronization

Oscillators Procurement Notes

Verify the specific ordering suffix 'PD' corresponds to the required power-down feature when sourcing replacements. Confirm that the 1.8V supply voltage aligns with the target circuit design. Ensure the 4-SMD no-lead package footprint matches the PCB layout constraints. Check manufacturer datasheets for reflow soldering profiles to prevent thermal damage during assembly processes.

Oscillators Selection Notes

Select this component when a 43.56 MHz frequency is required for RFID or wireless applications. Consider the 50 ppm stability requirement against environmental temperature variations. Evaluate the 23 mA current draw against total system power budgets. The 1.8V operation necessitates compatible logic levels within the receiving circuitry.

Oscillators Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz frequency control products. The series includes various frequencies and output types, such as OE (Output Enable) variants. Mercury Electronics has produced these components since 1973, focusing on crystal oscillators and filters for industrial and consumer electronics markets.

Oscillators Replacement Considerations

The 18QHTF21-43.560-OE is a documented substitute part number from the same manufacturer. Note that the 'OE' suffix indicates Output Enable functionality rather than Power Down. Verify electrical compatibility before swapping between PD and OE variants.