18QHTF21-71.900-PD

Overview

The 18QHTF21-71.900-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 71.9 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and includes a standby or power-down function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Integrates a standby mode to reduce power consumption during idle periods
• Utilizes a leadless SMD package for surface-mount assembly

Applications

• General clock signal generation in electronic circuits
• Timing reference for digital systems requiring 1.8V operation
• Embedded applications utilizing standard XO configurations

Procurement Notes

Verify the specific frequency tolerance and operating temperature range against the official datasheet before integration. Confirm that the 1.8V supply voltage aligns with the target system design. Ensure the 4-SMD no-lead package footprint matches the PCB layout requirements for proper soldering and mechanical stability.

Selection Notes

Select this component when a low-voltage 1.8V clock source is required with minimal form factor. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the standby feature if power efficiency is a priority in the application environment.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a small 2.0x1.6mm footprint. The series provides standard XO options with LVCMOS outputs and power-down capabilities, catering to space-constrained consumer and industrial electronics.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with matching 71.9 MHz frequency and 1.8V operation. Cross-reference with other manufacturers offering 2.0x1.6mm LVCMOS oscillators with identical pinout and electrical specifications.