18QHTF21-13.768-OE

Overview

The 18QHTF21-13.768-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 13.768 MHz and utilizes LVCMOS output logic. The device is designed for 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 2.0 x 1.6 mm.

Feature Summary

• Integrates LVCMOS output logic for digital interface compatibility
• Supports active enable and disable control functionality
• Utilizes a leadless surface-mount package design

Applications

• General clock signal generation in electronic circuits
• Timing reference sources for embedded systems
• Digital communication interface synchronization

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the official datasheet before integration. Confirm that the 1.8V supply voltage aligns with the target system power rails. Ensure the enable pin logic levels are compatible with the controlling microcontroller or FPGA to prevent unintended oscillator states during operation.

Selection Notes

Select this component when a low-voltage 1.8V timing source is required for space-constrained designs. The choice is driven by the need for a small 2.0x1.6mm footprint and the requirement for an enable/disable feature to manage power consumption. Verify that the 13.768 MHz frequency meets the specific data rate or clocking needs of the application circuit.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on low-profile crystal oscillators. The series typically offers various frequencies and voltage options within a standardized small outline no-lead package format. This specific model represents a fixed-frequency variant optimized for 1.8V applications.

Replacement Considerations

Direct substitutes must match the 13.768 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package dimensions. Cross-reference with other manufacturers offering identical pinouts and electrical characteristics to ensure mechanical and functional interchangeability without redesigning the PCB layout.