18QHTF21-90.3168-PD

Overview

The 18QHTF21-90.3168-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 90.3168 MHz and utilizes a 1.8V supply voltage. The device features an LVCMOS output logic type, ensuring compatibility with standard digital interfaces. It is housed in a compact 2.0x1.6mm surface-mount package designed for high-density PCB layouts. The component supports enable/disable functionality to manage power consumption during inactive periods.

Feature Summary

• Generates precise 90.3168 MHz clock signals using a crystal base resonator
• Operates on a low 1.8V supply voltage for energy efficiency
• Provides LVCMOS output logic for direct interface with digital circuits
• Supports active enable and disable control states

Applications

• Battery-powered portable electronic devices requiring low voltage operation
• High-density circuit boards utilizing 2.0x1.6mm surface-mount footprints
• Digital systems requiring stable 90.3168 MHz clock sources
• Applications necessitating programmable enable/disable power management

Procurement Notes

Verify the specific ordering suffix 'PD' corresponds to the required tape-and-reel strip packaging configuration. Confirm that the 1.8V supply voltage requirement aligns with the target system's power rails. Ensure the 2.0x1.6mm footprint matches the PCB design constraints. Cross-reference the manufacturer part number against official Mercury Electronics documentation to confirm current production status and availability.

Selection Notes

Select this component when a 90.3168 MHz frequency is strictly required alongside a 1.8V operating voltage. The small 2.0x1.6mm package makes it suitable for space-constrained designs. Consider the LVCMOS output level for signal integrity with compatible logic families. Evaluate the enable/disable feature if dynamic power management is a priority for the application.

Part Context

This model belongs to the QHTF series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options within similar compact form factors. The 18 prefix typically indicates the 1.8V supply variant, while the 21 denotes the specific package size. This family targets modern electronics needing reliable timing solutions in minimal spaces.

Replacement Considerations

Direct substitutes include other 18QHTF21 series variants with identical 90.3168 MHz frequency and 1.8V operation. Verify pinout compatibility and electrical specifications before swapping. Alternative packages like OE may require mechanical redesign. Consult Mercury Electronics for qualified replacement lists.