18QHTF21-10.235-PD

Overview

The 18QHTF21-10.235-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 10.235 MHz and utilizes an LVCMOS output signal format. The device is designed for surface mount applications, featuring a compact 4-SMD, No Lead package with dimensions of 2.00mm x 1.60mm. It supports a supply voltage of 1.8V and includes a standby or power-down function to manage current consumption. The maximum supply current is specified at 22mA. This component serves as a precise clock source for digital circuits requiring stable frequency generation.

Feature Summary

• Provides a stable 10.235 MHz clock signal using LVCMOS output logic levels
• Features a low-profile surface mount package suitable for space-constrained designs
• Includes a standby mode capability to reduce power consumption when not in active use

Applications

• Digital circuit clock generation
• Microcontroller system timing
• Communication interface synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 2.00mm x 1.60mm SMD package dimensions. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure reliable assembly and long-term performance.

Selection Notes

Select this component when a fixed 10.235 MHz frequency is required for LVCMOS-compatible logic families. Consider the 1.8V operating voltage constraint during system design. Evaluate the need for the standby feature if power management is critical. Compare the physical size against available board space. Ensure the current draw fits within the power budget of the target application.

Part Context

This part belongs to the Mercury Electronics XO series, which offers various frequencies and package sizes. The 'PD' suffix typically indicates the presence of a power-down pin or functionality. Similar parts in the series may offer different frequencies such as 51.2 MHz or 48.0048 MHz, or different voltages like 3.3V. The 18QHTF21 series generally targets applications requiring small form factors and standard CMOS compatibility.

FAQ

What is the output waveform type?

The output waveform is LVCMOS (Low Voltage Complementary Metal-Oxide-Semiconductor).

Does this oscillator support a power-down mode?

Yes, the datasheet indicates a Standby (Power Down) function.