18QHTF21-75.505-PD

Overview

The 18QHTF21-75.505-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 75.505 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.00mm x 1.60mm and a maximum height of 2.00mm.

Feature Summary

• Integrates LVCMOS output logic for digital interface compatibility
• Features a standby mode to reduce power consumption during idle periods
• Utilizes a surface-mount 4-SMD no-lead package for automated assembly

Applications

• General clock signal generation in electronic circuits
• Timing reference for low-voltage digital systems
• Embedded devices requiring compact oscillator solutions

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the target application design before procurement. Confirm that the 1.8V supply voltage aligns with the system power architecture. Ensure the PCB footprint matches the 2.00mm x 1.60mm SMD package dimensions to guarantee proper mechanical fit and electrical connection reliability.

Selection Notes

Select this component when a precise 75.505 MHz timing source is required for 1.8V logic families. Consider the small form factor for space-constrained designs. Evaluate the need for power-down functionality if battery life or thermal management is critical. Compare against other frequencies in the 18QHTF21 series if alternative clock speeds are acceptable.

Part Context

This part belongs to the Mercury Electronics 18QHTF21 series of surface-mount crystal oscillators. The series offers various frequencies and voltage options, including 3.3V variants like the 3QHTF21-75.505-PD. Mercury Electronic is a specialized manufacturer of quartz crystals and frequency control products, established in Taiwan with decades of industry experience.

Replacement Considerations

The 3QHTF21-75.505-PD is a related variant within the same product family but operates at 3.3V instead of 1.8V. Direct substitution requires verification of voltage level compatibility with the receiving circuitry. Other frequencies in the 18QHTF21 series share the same package but differ in output frequency.