18QHTF21-71.250-PD

Overview

The 18QHTF21-71.250-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 71.25 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 2.0 x 1.6 mm.

Feature Summary

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

Applications

• General clock signal generation in electronic circuits
• Timing reference for digital systems requiring 71.25 MHz
• Embedded devices utilizing low-voltage power supplies

Procurement Notes

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

Selection Notes

Select this component when a precise 71.25 MHz timing source is required within a low-power environment. The choice is driven by the need for LVCMOS compatibility and the physical constraints of a 2.0x1.6mm surface-mount form factor. Consider the standby feature if power efficiency during idle states is a critical design parameter for the application.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on small-form-factor oscillators. The series typically offers various frequencies and voltages, with this specific model providing a 71.25 MHz output. It serves as a fundamental timing element in modern electronics where space and power consumption are limiting factors.

Replacement Considerations

Direct substitutes must match the 71.25 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics with alternative manufacturers to ensure seamless integration without circuit redesign.