18QHTF21-72.330-PD

Overview

The 18QHTF21-72.330-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a nominal frequency of 72.33 MHz with a frequency stability of 50 ppm. The device utilizes an LVCMOS output logic and requires a supply voltage of 1.8V. Maximum current consumption is specified as 26 mA. The component features a power-down standby function and 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
• Includes power-down standby capability to reduce power consumption
• Utilizes a crystal base resonator for stable timing generation

Applications

• General-purpose clock signal generation in embedded systems
• Timing reference for digital circuits requiring 72.33 MHz
• Compact electronic devices utilizing SMD packaging

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications. Check for any specific handling or reflow soldering profile recommendations provided by the manufacturer for this small form factor component.

Selection Notes

Select this component when a precise 72.33 MHz clock source is required with low power consumption constraints. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the 50 ppm stability requirement against the system's jitter tolerance. The small 2.0x1.6 mm package makes it appropriate for space-constrained designs where larger oscillators cannot fit.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies and supply voltages, typically featuring LVCMOS outputs and power-down modes. These components are designed for applications requiring reliable timing signals in portable and industrial electronics, leveraging Taiwan-based manufacturing expertise in frequency control products.

Replacement Considerations

Direct substitutes must match the 72.33 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify equivalent stability and current specifications. Cross-reference with other manufacturers offering similar XO packages if Mercury Electronics availability is limited.