18QHTF21-119.999999-PD

Overview

The 18QHTF21-119.999999-PD is a crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a nominal frequency of 119.999999 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a Standby (Power Down) control function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This component is designed for high-frequency timing applications requiring precise clock signals.

Feature Summary

• Supports Low Voltage CMOS (LVCMOS) output interface
• Includes standby mode for power reduction
• Compact surface-mount package design

Applications

• High-speed digital signal processing systems
• Communication equipment clock generation
• Embedded system timing references

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. 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 to avoid assembly issues. Check for any RoHS compliance documentation if required for your region.

Selection Notes

Select this model when a precise 119.999999 MHz clock source is needed with low power consumption capabilities. The LVCMOS output ensures compatibility with standard digital logic families. Consider the small form factor for space-constrained designs. Verify operating temperature range suitability for your environmental conditions.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies with standardized 1.8V operation and LVCMOS outputs. The 'PD' suffix indicates the inclusion of a power-down feature. These components are commonly used in portable electronics and data communication devices where size and power efficiency are critical.

Replacement Considerations

Direct replacements may include other 119.999999 MHz XO models with identical 1.8V LVCMOS specifications and 4-SMD no-lead packages. Ensure pinout compatibility and electrical characteristics match exactly. Cross-reference with Mercury Electronics' current product listings for updated availability.