18QHTF21-27.540-PD

Oscillators Overview

The 18QHTF21-27.540-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 27.540 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down function to manage energy consumption. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This surface-mount oscillator is engineered for timing applications requiring precise clock signals within the specified electrical parameters.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V for efficient power usage
• Includes standby mode capability for power management
• Utilizes LVCMOS output logic for digital interface compatibility
• Features a small form factor suitable for space-constrained designs

Oscillators Applications

• General-purpose digital circuit timing
• Embedded systems requiring stable clock sources
• Consumer electronics with limited power budgets
• Communication modules needing precise frequency references

Oscillators Procurement Notes

Verify that the specific part number matches the required frequency and voltage specifications before ordering. Ensure the PCB footprint aligns with the 4-SMD, No Lead package dimensions. Confirm that the LVCMOS output level is compatible with the receiving logic inputs of the target application. Check for any specific handling requirements related to electrostatic discharge during assembly.

Oscillators Selection Notes

Choose this component when a 27.540 MHz clock signal is required with a 1.8V supply constraint. The LVCMOS output is suitable for standard digital logic families. Consider the standby feature if power efficiency is critical. The small 2.0x1.6mm package is ideal for dense layouts. Verify temperature range requirements against the datasheet specifications.

Oscillators Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies in a standardized 2.0x1.6mm SMD package. The series is characterized by its low voltage operation and compact size, targeting modern portable and high-density electronic devices. Mercury Electronics has established itself as a supplier of frequency control products since 1973.

Oscillators Replacement Considerations

Direct substitutes must match the 27.540 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Other manufacturers offering similar small-form-factor oscillators may require verification of pinout and electrical characteristics. Cross-referencing with equivalent parts from other suppliers should confirm identical functional parameters.