18QHTF21-75.305-PD

Overview

The 18QHTF21-75.305-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 75.305 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a Standby (Power Down) control function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is designed for applications requiring precise clock signals in space-constrained electronic systems.

Feature Summary

• Supports Low Voltage CMOS (LVCMOS) output interface
• Includes Standby (Power Down) functionality
• Utilizes quartz crystal technology for frequency stability

Applications

• General purpose clock signal generation
• Embedded system timing references
• Digital circuit synchronization

Procurement Notes

Verify the specific ordering suffix to ensure the correct package variant and electrical specifications match the design requirements. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Check for availability of the Standby pin configuration if power management is critical. Ensure the 4-SMD footprint matches the PCB layout constraints. Validate the operating temperature range against environmental conditions.

Selection Notes

Select this oscillator when a low-profile 2.0x1.6mm form factor is required for high-frequency applications. The 1.8V supply voltage makes it suitable for modern low-power digital logic families. Consider the LVCMOS output compatibility with downstream components. Evaluate the need for standby control to optimize system power consumption during idle periods.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies and supply voltages. The 'PD' suffix typically indicates a specific package or feature set within the manufacturer's lineup. These devices are part of Mercury's broader portfolio of quartz-based frequency control products.

Replacement Considerations

Direct substitutes include other 18QHTF21 series parts with identical 75.305MHz frequency and 1.8V operation, such as variants with different suffixes if pinout and package dimensions remain consistent. Cross-reference with other manufacturers offering 2.0x1.6mm LVCMOS oscillators at 75.305MHz, ensuring voltage and standby functionality match.