18QHTF21-91.77495-PD

Overview

The 18QHTF21-91.77495-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 91.77495 MHz with an output signal format of LVCMOS. The device requires a supply voltage of 1.8V and supports a standby or power-down function for energy management. Frequency stability is rated at ±50ppm, ensuring reliable timing performance across the specified operating temperature range of -40°C to +85°C. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications.

Feature Summary

• Supports low-voltage operation at 1.8V with LVCMOS output compatibility
• Includes standby mode functionality for effective power management
• Provides stable timing with ±50ppm frequency stability specification

Applications

• Digital signal processing systems requiring precise clock sources
• Communication equipment utilizing standard frequency references
• Embedded control units needing low-power oscillators

Procurement Notes

Verify that the specific part number matches the required frequency and voltage specifications before ordering. Confirm that the LVCMOS output level aligns with the target circuit's input requirements. Ensure the operating temperature range meets the environmental conditions of the intended application. Check for any specific handling instructions related to the no-lead SMD package during assembly.

Selection Notes

Select this component when a 1.8V supply voltage is mandatory for the system design. Consider the ±50ppm stability requirement against the overall system timing budget. Evaluate the 4-SMD footprint constraints against available PCB space. Compare the standby feature benefits against power consumption targets relative to other oscillator types.

Part Context

This model belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystals and oscillators. The manufacturer has decades of experience in frequency control products. This specific variant represents a standard XO configuration within their portfolio, designed for general-purpose timing applications in consumer and industrial electronics.

Replacement Considerations

Direct substitutes must match the 91.77495 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and thermal characteristics. Cross-reference with Mercury Electronics' current product listings for updated availability.