18QHTF21-76.800-PD

Overview

The 18QHTF21-76.800-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a nominal frequency of 76.800 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a Standby (Power Down) control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Supports Low Voltage CMOS (LVCMOS) output logic levels
• Includes Standby or Power Down functionality for energy management
• Utilizes a surface-mount 4-pin no-lead package design

Applications

• General clock signal generation in electronic circuits
• Timing reference sources for digital systems
• Embedded applications requiring low voltage operation

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply voltage aligns with your system's power rails. Confirm that the LVCMOS output swing is compatible with the receiving input logic thresholds of your target components to ensure reliable signal integrity.

Selection Notes

Select this component when a precise 76.800 MHz timing source is required within space-constrained designs. The choice is driven by the need for low voltage operation at 1.8V and the integration of power-down capabilities. Consider the small 2.0x1.6mm footprint if board real estate is limited compared to larger oscillator packages.

Part Context

This model belongs to the 18QHTF21 series from Mercury Electronics, which specializes in frequency control products. The series typically offers various standard frequencies with consistent LVCMOS outputs and low-voltage compatibility. Mercury Electronics has been a pioneer in the crystal industry since 1973, providing these oscillators for diverse electronic applications.

Replacement Considerations

Direct substitutes must match the 76.800 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package dimensions. Verify pinout compatibility and electrical specifications such as phase noise and jitter if available in official datasheets.