18QHTF21-1.12896-PD

Overview

The 18QHTF21-1.12896-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 1.12896 MHz and utilizes an LVCMOS output signal format. The device is designed for low-power applications, featuring a supply voltage of 1.8V and a standby power-down mode to conserve energy during inactive periods. It is housed in a compact 4-SMD, no-lead package, suitable for surface-mount assembly processes.

Feature Summary

• Supports LVCMOS output logic levels for digital interface compatibility
• Includes a dedicated standby or power-down control function
• Operates on a single 1.8V power supply rail
• Utilizes a small-footprint 4-SMD no-lead package design

Applications

• Battery-powered portable electronic devices
• Low-power embedded systems requiring precise timing
• Digital communication interfaces utilizing LVCMOS standards
• Compact consumer electronics with space constraints

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power architecture. Ensure the 4-SMD no-lead package dimensions fit within your PCB layout constraints. Check for any specific handling instructions related to the surface-mount technology used in this component.

Selection Notes

Select this oscillator when a stable 1.12896 MHz clock source is required for LVCMOS-compatible circuits. Consider the 1.8V operating voltage if your system uses low-voltage logic families. The integrated power-down feature makes it suitable for applications where energy efficiency is critical. Evaluate the physical size of the 4-SMD package to ensure it meets your board space limitations compared to larger through-hole alternatives.

Part Context

This component belongs to the 18QHTF21 series of quartz crystal oscillators produced by Mercury Electronic. The manufacturer has extensive experience in frequency control products, including crystals and various oscillator types. This specific model represents a standard XO variant optimized for low-voltage operation and compact packaging, distinguishing it from higher-power or larger-package options in their catalog.

Replacement Considerations

Direct substitutes must match the 1.12896 MHz frequency, LVCMOS output type, and 1.8V supply voltage. Verify pinout compatibility for the 4-SMD no-lead package. Alternative models from Mercury Electronics with similar specifications may be considered if they offer improved tolerance or temperature stability, provided the footprint remains identical.