18QHTF21-12.352-PD

Overview

The 18QHTF21-12.352-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 12.352 MHz and utilizes LVCMOS output logic. The device is designed for low-power applications, featuring a supply voltage of 1.8V and a standby mode for power-down functionality. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Supports standby mode for power-down operation
• Utilizes LVCMOS output logic interface
• Compact surface-mount package design

Applications

• General clock signal generation
• Low-power electronic systems
• Digital circuit timing references

Procurement Notes

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

Selection Notes

Select this component when a precise 12.352 MHz clock source is required with minimal power consumption. The LVCMOS output ensures compatibility with standard digital logic families. Consider the 1.8V operating voltage constraint and the need for standby functionality when evaluating alternative oscillators for space-constrained or battery-operated designs.

Part Context

This model belongs to the 18QHTF21 series from Mercury Electronics, which specializes in frequency control products. The series offers various frequencies within a standardized 2.0x1.6 mm footprint. The 'PD' suffix indicates the inclusion of a power-down feature, distinguishing it from standard continuous-operation variants within the same physical package family.

Replacement Considerations

Direct replacements must match the 12.352 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as load capacitance and drive strength to ensure seamless integration without circuit modification.