18QHTF21-72.606816-PD

Overview

The 18QHTF21-72.606816-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 72.606816 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a standby (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 maximum supply current is specified as 26mA. This component is designed for applications requiring precise timing signals within portable electronic systems.

Feature Summary

• Supports standby mode for power reduction
• Compact surface-mount package design
• LVCMOS output compatibility

Applications

• Battery-powered portable devices
• Consumer electronics timing circuits
• Communication equipment clock generation

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against your circuit design specifications before ordering. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions to avoid assembly issues. Confirm that the 1.8V supply rail can maintain stable voltage under peak current conditions of 26mA. Check for any specific handling instructions regarding electrostatic discharge protection during storage and installation.

Selection Notes

Choose this oscillator when a low-voltage 1.8V supply is available and space constraints require a minimal footprint. The standby feature makes it suitable for battery-operated products where power efficiency is critical. Consider the LVCMOS output interface for direct connection to standard digital logic families without additional level shifting components.

Part Context

This model belongs to the QHTF series of quartz crystal oscillators from Mercury Electronics. The series is characterized by small form factors and low power consumption, targeting modern mobile and handheld devices. Mercury Electronics has extensive experience in frequency control products, positioning this component within their portfolio of precision timing solutions for consumer markets.

Replacement Considerations

Direct substitutes must match the 72.606816 MHz frequency, 1.8V supply, and 4-SMD no-lead package. Verify pinout compatibility and electrical characteristics such as rise/fall times and duty cycle. Alternative models from other manufacturers may require schematic adjustments if output logic levels differ.