18QHTF21-114.258-PD

Overview

The 18QHTF21-114.258-PD is a quartz crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 114.258 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 3.3V and features a power-down function via standby mode control. It is housed in a compact 2.0x1.6 mm surface-mount package with no lead construction, suitable for space-constrained electronic applications requiring precise timing signals.

Feature Summary

• Provides stable 114.258 MHz clock signal generation using quartz crystal technology
• Supports low-voltage operation with 3.3V supply requirement
• Enables power management through dedicated standby or power-down functionality
• Utilizes LVCMOS output interface for digital circuit compatibility

Applications

• High-speed data communication interfaces requiring precise clock synchronization
• Network equipment utilizing standard frequency protocols
• Embedded systems needing compact timing solutions
• Digital signal processing circuits demanding stable oscillator sources

Procurement Notes

Verify the specific ordering suffix to ensure correct voltage and frequency specifications. Confirm that the 3.3V variant matches system requirements, as other versions may exist. Check packaging details for tape-and-reel availability if automated assembly is required. Ensure the manufacturer part number corresponds exactly to the intended design implementation.

Selection Notes

Select this component when a 114.258 MHz frequency is strictly required for system timing. Consider the 3.3V operating voltage against available power rails. Evaluate the 2.0x1.6 mm footprint against board space constraints. Verify LVCMOS output compatibility with downstream logic levels before integration into the design.

Part Context

This oscillator belongs to the Mercury Electronics SMD oscillator series, which includes various frequencies and package sizes. The 18QHTF21 series typically offers standard performance characteristics for general-purpose timing applications. Mercury Electronics has established itself as a pioneer in Taiwan's quartz industry since 1973, producing frequency control products for diverse electronic markets.

Replacement Considerations

Direct substitutes must match the 114.258 MHz frequency, 3.3V supply, and LVCMOS output type. Compatible alternatives should maintain similar physical dimensions and pinout configurations. Verify that any replacement supports the same standby power-down functionality. Cross-reference with Mercury Electronics' official documentation for approved equivalent part numbers.