18QHTF21-12.960-PD

Overview

The 18QHTF21-12.960-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 12.96 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and features a power-down (standby) control function to manage energy consumption. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm. This component is designed for timing applications requiring precise clock signals in space-constrained electronic systems.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes power-down functionality for standby mode operation
• Utilizes a small form factor 4-SMD no-lead package

Applications

• Portable consumer electronics
• Battery-powered devices
• Communication modules

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the system design specifications before procurement. Ensure that the 1.8V supply rail stability meets the oscillator's operational needs. Confirm that the PCB layout accommodates the 2.0x1.6mm SMD footprint and that the power-down pin is correctly terminated to prevent unintended activation during standby states.

Selection Notes

Select this model when a low-voltage 1.8V oscillator is required for high-density circuit boards. The integrated power-down feature makes it suitable for applications where battery life is critical. Consider the 12.96 MHz frequency specifically for timing standards or baud rate generation requirements. Ensure the application environment falls within the specified operating temperature range for reliable performance.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on low-voltage crystal oscillators. The series offers various frequencies and package options tailored for modern portable electronics. The 'PD' suffix indicates the inclusion of a power-down control pin, distinguishing it from continuous-operation variants within the same family.

Replacement Considerations

Direct substitutes include other 12.96 MHz LVCMOS oscillators with identical 1.8V supply and 2.0x1.6mm SMD packages. Verify that any replacement also supports the power-down control function if standby capability is required. Check for equivalent frequency stability and phase noise specifications to ensure signal integrity is maintained.