18QHTF21-29.9971-PD

Oscillators Overview

The 18QHTF21-29.9971-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 29.9971 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. This component is designed for applications requiring precise timing signals within low-voltage digital systems.

Oscillators Feature Summary

• Standard XO configuration with LVCMOS output interface
• Integrated standby and power-down functionality
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• Digital signal processing circuits
• Communication equipment timing references
• Embedded system clock generation

Oscillators Procurement Notes

Verify the specific suffix 'PD' confirms the power-down feature when sourcing replacements. Ensure the 1.8V supply requirement aligns with target system voltages. Confirm the 2.0x1.6mm footprint matches PCB layout constraints. Check RoHS compliance status if required by project specifications. Validate the 29.9971 MHz frequency against design tolerances.

Oscillators Selection Notes

Select this component for designs requiring a low-profile 1.8V oscillator with power management capabilities. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the small 4-SMD package for space-constrained layouts. Ensure the operating temperature range meets environmental requirements. Verify that the standby current specifications fit power budget limits.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies in a standardized 2.0x1.6mm SMD package. The series typically supports 1.8V operation and includes options for power-down states. Similar parts in the series differ primarily by output frequency and specific package variants, maintaining consistent electrical characteristics and form factors across the lineup.

Oscillators Replacement Considerations

Direct substitutes must match the 29.9971 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify equivalent standby functionality and pinout compatibility. Cross-reference with other manufacturers offering similar low-profile oscillators if Mercury Electronics availability is limited.