18QHTF21-12.245-PD

Overview

The 18QHTF21-12.245-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd, operating at a fixed frequency of 12.245 MHz. It utilizes LVCMOS output logic and functions with a supply voltage of 1.8V. The device features a standby mode for power down capabilities. 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 standby functionality for power management
• Utilizes LVCMOS output interface

Applications

• Battery-powered portable devices
• Compact electronic systems requiring low profile components
• Clock signal generation in consumer electronics

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail is stable within the operational limits specified in the official datasheet to ensure reliable oscillator performance and longevity.

Selection Notes

Select this component when a small form factor is required alongside low power consumption. The 1.8V supply requirement makes it suitable for modern low-voltage digital circuits. Ensure the application does not require spread spectrum or additional frequency stability features beyond standard specifications.

Part Context

This part belongs to the QHTF21 series from Mercury Electronics, which focuses on miniature surface-mount oscillators. The series is designed for applications where space constraints are critical. The 'PD' suffix indicates the inclusion of a power-down control feature, distinguishing it from continuous-operation variants.

Replacement Considerations

Direct substitutes must match the 12.245 MHz frequency, 1.8V supply, and 4-SMD 2.0x1.6mm footprint. Verify pin compatibility and output logic levels. Cross-reference with other Mercury Electronics models in the same series if availability is an issue.