18QHTF21-13.421773-PD

Overview

The 18QHTF21-13.421773-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 13.421773 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a power-down mode for standby functionality. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes power-down capability for energy-efficient standby operation
• Utilizes a small form factor SMD package for surface mount applications

Applications

• General clock signal generation in electronic circuits
• Timing reference for digital systems requiring 1.8V logic levels
• Embedded devices utilizing standard crystal oscillator interfaces

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design 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 related to the surface mount technology used in this component.

Selection Notes

Select this model when a precise 13.421773 MHz timing source is required within a low-voltage 1.8V environment. Consider the LVCMOS output type if interfacing directly with standard digital logic inputs. The compact 2.0x1.6 mm size makes it suitable for space-constrained designs. Evaluate the power-down feature if battery life or thermal management is a critical design parameter.

Part Context

This component belongs to the 18QHTF21 series from Mercury Electronics, which specializes in frequency control products. The series typically includes various frequencies and voltage options. Mercury Electronics has a long history in quartz crystal manufacturing, positioning this part within their standard oscillator lineup for general-purpose timing applications.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with identical pinouts and electrical characteristics but different frequencies, such as the 18QHTF21-8.000-PD or 18QHTF21-6.770-PD, provided the frequency difference is acceptable for the application.