18QHTF21-12.5829-PD

Overview

The 18QHTF21-12.5829-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 12.5829 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features a power-down capability via a standby control input to minimize energy consumption when not in use. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby mode for power-down functionality
• Operates on a single 1.8V supply voltage

Applications

• Portable electronic devices requiring low power consumption
• Battery-operated systems needing efficient timing sources
• Compact consumer electronics utilizing surface-mount technology

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before procurement. Confirm that the 1.8V supply rail can maintain stable voltage under peak current conditions. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions. Check availability through authorized distributors as lead times may vary based on production schedules.

Selection Notes

Select this component when a precise 12.5829 MHz clock signal is required for LVCMOS-compatible circuits. Consider the 1.8V operating voltage constraint to ensure compatibility with existing power rails. The small form factor makes it ideal for space-constrained designs. Evaluate the need for power-down functionality if energy efficiency is a critical design parameter.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized 2.0x1.6mm package. The series typically supports LVCMOS outputs and low-voltage operation. The '-PD' suffix indicates the inclusion of a power-down feature, distinguishing it from standard continuous-operation variants within the same physical footprint family.

Replacement Considerations

Direct replacements must match the 12.5829 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and thermal characteristics. Alternative parts from other manufacturers require careful evaluation of electrical specifications and mechanical dimensions to ensure seamless integration.