18QHTF21-86.905-PD

Overview

The 18QHTF21-86.905-PD is a crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 86.905 MHz and utilizes LVCMOS output logic. The device is powered by a 1.8V supply voltage and features a Standby (Power Down) control function for power management. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals in electronic circuits.

Feature Summary

• Generates stable clock signals using LVCMOS output logic
• Supports standby mode via power down control pin
• Designed for surface-mount assembly with no-lead package

Applications

• Digital signal processing systems
• Communication equipment timing
• Embedded system clock generation

Procurement Notes

Verify the exact frequency specification of 86.905 MHz against design requirements before procurement. Confirm that the 1.8V supply voltage aligns with the target circuit's power domain. Ensure the 4-SMD No Lead package footprint matches the PCB layout. Check for availability of the specific PD suffix variant which indicates the power down feature set.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS interface. The inclusion of a power down feature makes it suitable for battery-operated or energy-efficient designs. Consider the 4-SMD form factor for space-constrained layouts. Validate that the 86.905 MHz frequency meets the specific timing needs of the application without requiring external dividers.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd, a manufacturer specializing in quartz crystals and oscillators. The series typically offers various frequencies and supply voltages. The 'PD' suffix denotes the Power Down capability, distinguishing it from variants like 'OE' which may use Enable/Disable logic. This places the component within the standard XO category for general-purpose timing.

Replacement Considerations

Direct substitutes must match the 86.905 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify if alternative manufacturers offer equivalent parts with identical pinouts and electrical characteristics. Cross-reference with other Mercury Electronics models in the same series that share the same package and voltage but differ only in frequency.