18QHTF21-6.140-PD

Overview

The 18QHTF21-6.140-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 6.14 MHz and utilizes LVCMOS output logic. The component requires a 1.8V supply voltage and features a standby mode for power down functionality. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications.

Feature Summary

• Supports low-voltage operation with 1.8V supply
• Includes standby capability for power management
• Utilizes LVCMOS output interface

Applications

• Battery-powered portable devices
• General-purpose digital timing circuits
• Embedded system clock generation

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 4-SMD no-lead package dimensions align with your PCB footprint. Ensure the 1.8V supply rail stability meets the oscillator's operational specifications to maintain signal integrity.

Selection Notes

Select this component when a low-profile surface-mount oscillator is required for 1.8V logic systems. Consider the LVCMOS output compatibility with downstream digital inputs. Evaluate the need for standby functionality to optimize power consumption in portable or battery-operated designs compared to continuous-operation alternatives.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic, which specializes in quartz-based frequency control products. The series includes various frequencies and output types, all sharing similar low-profile packaging and voltage characteristics designed for modern compact electronics.

Replacement Considerations

Direct substitutes include other 18QHTF21 series variants with identical pinout and voltage but different frequencies, such as 18QHTF21-6.000-PD or 18QHTF21-6.790-PD, provided the frequency difference is acceptable for the application.