18QHTF21-1.260-OE

Overview

The 18QHTF21-1.260-OE is a 1.26 MHz crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a supply voltage of 1.8V and utilizes an LVCMOS output interface. The component features an Enable/Disable control function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Supports low voltage operation at 1.8V
• Includes hardware enable/disable functionality
• Provides standard LVCMOS logic levels

Applications

• Consumer electronics timing circuits
• Industrial electronic systems
• Portable device clock generation

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Confirm that the 1.8V supply rail matches the system design constraints. Ensure the 4-SMD no-lead footprint aligns with the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a precise 1.26 MHz reference signal is required within space-constrained designs. The 1.8V operating voltage makes it suitable for modern low-power applications. The integrated enable pin allows for dynamic power control, which is beneficial for battery-operated devices requiring extended standby times.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd, a manufacturer established in Taiwan specializing in quartz crystals and oscillators. The series offers various frequencies in a small SMD package, catering to industries needing reliable timing solutions in compact form factors.

Replacement Considerations

Direct substitutes include other 1.26 MHz LVCMOS oscillators in 2.0x1.6mm packages from manufacturers such as Epson or SiTime, provided electrical parameters match. Verify pin compatibility and voltage levels before substitution.