18QHTF21-12.980-PD

Overview

The 18QHTF21-12.980-PD is a crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 12.98 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function. It is housed in a 4-SMD, No Lead package.

Feature Summary

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

Applications

• General clock signal generation
• Digital circuit timing
• Embedded system synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Ensure the 1.8V supply voltage aligns with the target circuit design. Confirm the 4-SMD no-lead package dimensions fit the PCB footprint constraints. Check for RoHS compliance status if required by project specifications.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside standard LVCMOS compatibility. The inclusion of a power-down feature makes it suitable for battery-powered applications requiring energy efficiency. Consider the compact 4-SMD form factor for space-constrained designs where standard leaded packages are unsuitable.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies within the same package footprint. The 'PD' suffix typically indicates the presence of a power-down control pin, distinguishing it from continuous-operation variants in the same family.

Replacement Considerations

Direct replacements must match the 12.98 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility, specifically the power-down control functionality. Cross-reference with other manufacturers offering similar ultra-low profile oscillators with standby features.