18QHTF21-1.536-PD

Overview

The 18QHTF21-1.536-PD is a crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 1.536 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and supports a standby or power-down mode. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Supports low-voltage operation at 1.8V for energy efficiency
• Includes standby functionality to reduce power consumption
• Utilizes LVCMOS output logic for digital interface compatibility
• Features a small surface-mount package for space-constrained designs

Applications

• Battery-powered portable devices
• General-purpose clock signal generation
• Digital circuit timing references

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for any specific handling instructions regarding electrostatic discharge during assembly.

Selection Notes

Select this component when a precise 1.536 MHz reference is required in a minimal footprint. The 1.8V operating voltage makes it suitable for modern low-power digital systems. Consider the standby feature if power management is critical. Verify that the LVCMOS output levels are compatible with the receiving logic inputs of your target application.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized 2.0x1.6mm package. The series is designed for applications requiring reliable clock sources in compact electronic devices. Mercury Electronics has a long history in quartz crystal manufacturing, providing established reliability for frequency control products.

Replacement Considerations

Direct substitutes include other 1.536 MHz XO components in 4-SMD packages with 1.8V LVCMOS outputs. Verify pinout compatibility and thermal characteristics when considering alternatives from different manufacturers.