18QHTF21-124.000-PD

Overview

The 18QHTF21-124.000-PD is a crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 124.0 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby or power-down feature for energy management. It is housed in a 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Integrates standby mode for power reduction
• Provides standard LVCMOS signal output

Applications

• Digital clock generation in embedded systems
• Timing reference for high-speed data interfaces
• Synchronization circuits in communication modules

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system'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 124.0 MHz timing source is required for compact designs. The small 2.0x1.6 mm form factor suits space-constrained applications. Consider the LVCMOS interface compatibility with your target logic family and ensure the operating temperature range meets environmental specifications.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz frequency control products. The manufacturer has decades of experience in Taiwan's crystal industry. This series typically offers standard oscillators designed for reliable performance in consumer and industrial electronics.

Replacement Considerations

Direct substitutes must match the 124.0 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter if critical to the application.