18QHTF21-75.670-PD

Overview

The 18QHTF21-75.670-PD is a 75.67 MHz crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a supply voltage of 1.8V and features LVCMOS output logic. The device supports a standby or power-down mode for energy efficiency. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The unit exhibits a frequency stability of ±50ppm and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Supports low-voltage operation at 1.8V with LVCMOS output compatibility
• Includes standby or power-down functionality for reduced power consumption
• Utilizes a small form factor 4-SMD no lead package design

Applications

• General clock signal generation in embedded systems
• Timing reference for digital communication interfaces
• Power-sensitive portable electronic devices

Procurement Notes

Verify the specific frequency tolerance and temperature range requirements against your system specifications before procurement. Confirm that the 1.8V supply voltage aligns with your target circuit design. Ensure the 4-SMD no lead package footprint matches your PCB layout constraints. Check for any specific ordering suffixes that may indicate variations in packaging or tape-and-reel quantities if applicable to your manufacturing process.

Selection Notes

Select this component when a precise 75.67 MHz timing source is required for low-power applications. The 1.8V supply voltage makes it suitable for modern battery-operated devices. Consider the ±50ppm stability for standard timing needs where high precision is not critical. The compact size allows for integration into space-constrained designs without compromising thermal performance.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies tailored for different digital applications. The manufacturer has extensive experience in quartz crystal production, ensuring consistent quality across their frequency control products. This specific model represents a standard XO variant optimized for general-purpose use.

Replacement Considerations

Direct substitutes include other 75.67 MHz LVCMOS oscillators with identical 1.8V supply and 4-SMD no lead packages. Verify pinout compatibility and electrical characteristics such as current consumption and load capacitance. Alternative models from the same manufacturer with different frequencies are not interchangeable unless the system allows for frequency adjustment.