18QHTF21-21.005-PD

Oscillators Overview

The 18QHTF21-21.005-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 21.005 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a Standby (Power Down) control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm.

Oscillators Feature Summary

• Supports Low Voltage CMOS (LVCMOS) output logic levels
• Includes Standby or Power Down functionality for energy management
• Utilizes a small form factor 4-SMD No Lead surface mount package

Oscillators Applications

• General clock signal generation in electronic circuits
• Timing reference for digital systems requiring 21.005 MHz
• Embedded devices utilizing low voltage power supplies

Oscillators Procurement Notes

Verify the specific operating temperature range and frequency stability specifications directly from the official datasheet before integration. Confirm that the 1.8V supply voltage aligns with the target system design requirements. Ensure the 4-SMD No Lead package footprint matches the printed circuit board layout to guarantee proper soldering and mechanical stability during assembly processes.

Oscillators Selection Notes

Select this component when a precise 21.005 MHz timing source is required within space-constrained designs. The choice is appropriate for applications necessitating LVCMOS compatibility and low power consumption through standby modes. Consider the 1.8V operating voltage constraint and the specific physical dimensions of the 2.0x1.6mm package against available board real estate and power budget limitations.

Oscillators Part Context

This part belongs to the 18QHTF21 series of crystal oscillators produced by Mercury Electronic Ind. Co., Ltd. The manufacturer specializes in frequency control products including quartz crystals and oscillators. This specific model represents a standard XO variant optimized for low voltage operation and compact surface mount integration.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 series variants such as 18QHTF21-24.000-PD or 18QHTF21-8.000-PD if different frequencies are acceptable. Verify pinout and electrical characteristics match before swapping.