18QHTF21-8.050-PD

Overview

The 18QHTF21-8.050-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 8.05 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and features a standby or power-down mode for energy efficiency. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. The maximum supply current is specified as 21mA. This component is designed for applications requiring precise timing signals in low-voltage digital systems.

Feature Summary

• Supports LVCMOS output logic for compatibility with standard digital interfaces
• Includes standby or power-down functionality to reduce power consumption
• Utilizes a base crystal resonator for stable frequency generation

Applications

• General-purpose clock signal generation in embedded systems
• Timing reference for microcontrollers and processors operating at 1.8V
• Low-power portable electronic devices requiring precise frequency control

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure that the 1.8V supply voltage aligns with your system's power rails. Confirm that the 21mA maximum current draw fits within your power budget constraints. Check for any specific environmental temperature range requirements if the application involves extreme conditions.

Selection Notes

Select this component when a small form factor 2.0x1.6 mm oscillator is required for 1.8V logic systems. Consider the LVCMOS output type for direct interfacing with standard digital inputs. Evaluate the need for power-down capabilities if battery life or thermal management is a priority. Compare against other frequencies in the 18QHTF21 series if different clock speeds are needed.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies including 8MHz, 15.7MHz, and 80MHz variants. All parts in this line share similar physical dimensions and electrical characteristics, differing primarily in output frequency and specific ordering suffixes. The 'PD' suffix indicates the inclusion of power-down functionality.

Replacement Considerations

Direct substitutes may include other 18QHTF21 series parts with identical pinout and voltage specifications but different frequencies, provided the system allows for frequency adjustment. Cross-referencing with other manufacturers offering 2.0x1.6mm 1.8V LVCMOS oscillators requires careful verification of electrical parameters and mechanical footprint compatibility.