18QHTF21-7.400-PD

Overview

The 18QHTF21-7.400-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 7.4 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby function for power down control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.00mm x 1.60mm.

Feature Summary

• Integrates LVCMOS output logic for digital interface compatibility
• Features a standby mode to enable power down functionality
• Utilizes a surface-mount 4-SMD no-lead package design

Applications

• General clock signal generation in electronic circuits
• Timing reference for digital systems requiring 7.4 MHz
• Embedded devices utilizing LVCMOS compatible interfaces

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a precise 7.4 MHz timing source is required for low-voltage applications. The choice is driven by the need for LVCMOS compatibility and the space constraints addressed by the small 2.00mm x 1.60mm package. Consider the standby feature if power management is a priority in the design.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized 4-SMD form factor. The series is designed for applications requiring reliable clock signals in compact electronic assemblies, leveraging the manufacturer's expertise in quartz crystal technology established since 1973.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with identical pinout and electrical characteristics but different frequencies, such as 18QHTF21-51.200-PD or 18QHTF21-96.768-PD, provided the system timing requirements allow for frequency adjustment.