18QHTF21-6.1448-PD

Overview

The 18QHTF21-6.1448-PD is a crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 6.1448 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The component supports an operating temperature range from -40°C to 85°C and exhibits a frequency stability of ±50ppm.

Feature Summary

• Standard LVCMOS output interface compatible with digital logic circuits
• Integrated enable and disable functionality for power control
• Compact surface-mount design suitable for space-constrained applications

Applications

• Battery-powered portable devices requiring low power consumption
• Digital signal processing systems needing precise clock timing
• Communication modules utilizing standard logic interfaces

Procurement Notes

Verify the specific suffix 'PD' indicates the power-down feature when sourcing replacements. Confirm that the 1.8V supply requirement matches the target system's voltage rails. Ensure the 4-SMD no-lead package footprint aligns with the PCB layout specifications before finalizing procurement orders.

Selection Notes

Select this component when a 6.1448 MHz clock source with LVCMOS outputs is required. Consider the 1.8V supply constraint and the need for a standby mode. Evaluate the ±50ppm stability against system timing requirements. The small 2.0x1.6mm package makes it suitable for dense circuit board designs.

Part Context

This part belongs to the 18QHTF21 series of oscillators from Mercury Electronics. The series offers various frequencies and supply voltages. The '-PD' suffix typically denotes the inclusion of a power-down pin or function, distinguishing it from standard versions like the '-OE' variant which may have different enable characteristics.

Replacement Considerations

Direct substitutes include other 6.1448 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify compatibility regarding the power-down functionality and frequency stability specifications. Ensure the replacement part maintains the same physical dimensions for seamless integration.