18QHTF21-1.2183-PD

Overview

The 18QHTF21-1.2183-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 1.2183 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• LVCMOS output logic interface
• Integrated standby and power-down functionality
• Compact 4-SMD no-lead surface mount package

Applications

• General purpose timing circuits
• Digital signal processing systems
• Embedded microcontroller clock sources

Procurement Notes

Verify the specific frequency tolerance and stability requirements against the official datasheet before procurement. Confirm that the 1.8V supply voltage aligns with the target system design. Ensure the 4-SMD no-lead package footprint matches the PCB layout constraints. Check for any specific ordering suffixes that may alter electrical characteristics or packaging format.

Selection Notes

Select this component when a precise 1.2183 MHz reference is required in space-constrained designs. The LVCMOS output ensures compatibility with standard digital logic families. The inclusion of a power-down feature supports applications requiring active standby modes. Verify thermal performance within the specified operating temperature range during integration.

Part Context

This part belongs to the 18QHTF21 series of standard oscillators from Mercury Electronic Ind. Co., Ltd. The series offers various frequency options within a consistent 2.0x1.6mm form factor. It serves as a timing source for electronic systems requiring stable clock signals without the complexity of programmable devices.

Replacement Considerations

Direct substitutes must match the 1.2183 MHz frequency, LVCMOS output, and 1.8V supply voltage. Compatible alternatives include other manufacturers' 4-SMD no-lead oscillators with identical pinout and dimensional specifications. Cross-reference the datasheet for equivalent stability and load capacitance parameters.