18QHTF21-49.340-PD

Overview

The 18QHTF21-49.340-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 49.34 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 2.5V and features a Standby (Power Down) control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Supports low-voltage operation at 2.5V
• Includes standby power-down capability
• Compact surface-mount form factor

Applications

• General timing clock generation
• Digital signal processing systems
• Embedded controller circuits

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before procurement. Confirm that the 2.5V supply voltage aligns with your target circuit's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints to avoid assembly issues.

Selection Notes

Select this component when a precise 49.34 MHz reference is required with minimal power consumption during idle states. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the small 2.0x1.6mm package size if board space is limited compared to larger oscillator packages.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd, which specializes in quartz crystals and oscillators. The series offers various frequencies and voltage options, providing flexibility for different timing applications in consumer and industrial electronics.

Replacement Considerations

The 25QHTF21-49.340-PD is listed as an equivalent or alternate option. Note that the 25QHTF21 variant typically operates at 2.5V, similar to this part, but verify pinout and electrical specifications to ensure direct interchangeability.