18QHTF21-43.4835-PD

Oscillators Overview

The 18QHTF21-43.4835-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 43.4835 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 2.0 x 1.6 mm.

Oscillators Feature Summary

• Integrates LVCMOS output logic for standard digital interface compatibility
• Features a dedicated standby mode to reduce power consumption during idle periods
• Utilizes a small form-factor SMD package suitable for space-constrained designs

Oscillators Applications

• General clock signal generation in embedded systems
• Timing reference for digital communication interfaces
• Clock source for microcontroller-based circuits

Oscillators Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the target application's design specifications before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions to guarantee proper soldering and mechanical stability during assembly.

Oscillators Selection Notes

Select this component when a precise 43.4835 MHz timing source is required with low-power standby capabilities. Consider the LVCMOS output swing levels to ensure compatibility with downstream logic inputs. Evaluate the thermal performance within the specified operating temperature range to maintain frequency stability under varying environmental conditions.

Oscillators Part Context

This part belongs to the Mercury Electronics 18QHTF21 series of surface-mount oscillators. The series offers various frequencies and voltage options, all sharing a common 2.0x1.6mm footprint. The 'PD' suffix indicates the inclusion of a power-down control feature, distinguishing it from standard continuous-operation variants within the same physical package family.

Oscillators Replacement Considerations

Direct substitutes must match the 43.4835 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter if critical to the application.