18QHTF21-72.4005-PD

Overview

The 18QHTF21-72.4005-PD is a standard frequency crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 72.4005 MHz and utilizes LVCMOS output logic. The device is designed for low-power applications, featuring a supply voltage of 1.8V and a standby power-down mode. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm. The component supports an operating temperature range suitable for industrial environments.

Feature Summary

• Supports low-voltage operation at 1.8V with integrated standby functionality
• Delivers standard LVCMOS output signals for digital interface compatibility
• Utilizes a compact surface-mount package design for space-constrained layouts

Applications

• Digital signal processing clock sources
• Communication equipment timing references
• Embedded system microcontroller clocks

Procurement Notes

Verify the specific order suffix to confirm the exact frequency tolerance and load capacitance requirements for your circuit design. Ensure that the 1.8V supply voltage aligns with your system's power rails before integration. Confirm that the LVCMOS output swing is compatible with the receiving logic inputs. Check for any specific packaging or reel specifications required for automated assembly processes.

Selection Notes

Select this component when a precise 72.4005 MHz reference is required in a minimal footprint. The 1.8V supply requirement makes it suitable for modern low-power portable devices. Consider the LVCMOS output type for direct interfacing with standard digital logic families without additional level shifting. Evaluate the thermal performance within the specified operating temperature range during system design.

Part Context

This part belongs to the Mercury Electronics XO series, which specializes in precision frequency control solutions. The manufacturer has established expertise in quartz crystal technology since 1973. This specific model represents a standard output variant within their portfolio of surface-mount oscillators designed for high-volume consumer and industrial electronics.

Replacement Considerations

Direct substitutes must match the 72.4005 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package dimensions. Verify pinout compatibility and electrical characteristics such as phase noise and jitter if critical to the application.