18QHTF21-78.700-PD

Overview

The 18QHTF21-78.700-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 78.7 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features a power-down function for standby mode control. 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 1.8V
• Includes power-down capability for energy management
• Provides LVCMOS output signal compatibility

Applications

• General clock generation for digital circuits
• Embedded systems requiring precise timing references
• Portable electronic devices utilizing low-power oscillators

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 constraints. Check for any specific handling instructions related to surface-mount assembly processes.

Selection Notes

Select this component when a 78.7 MHz reference is required with minimal power consumption. The LVCMOS interface ensures compatibility with standard logic families. Consider the small form factor for space-constrained designs. Verify thermal performance within the specified operating temperature range for your application environment.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies with consistent 1.8V operation and LVCMOS outputs. These components are designed for applications demanding reliable timing signals in compact electronic assemblies.

Replacement Considerations

Direct substitutes must match the 78.7 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Verify pinout compatibility and electrical specifications before substitution.