18QHTF21-76.121875-PD

Overview

The 18QHTF21-76.121875-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a nominal frequency of 76.121875 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 to reduce consumption when inactive. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This component provides stable clock signals for digital circuits requiring precise timing.

Feature Summary

• Supports low-voltage operation at 1.8V
• Integrates standby mode for power management
• Features LVCMOS output compatibility

Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded system timing references

Procurement Notes

Verify the specific frequency tolerance and stability requirements against your design specifications 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 RoHS compliance documentation if required by your manufacturing standards. Consult the official datasheet for detailed electrical characteristics and thermal considerations.

Selection Notes

Select this oscillator when a precise 76.121875 MHz clock source is required for LVCMOS-compatible logic families. Consider the 1.8V operating voltage as a primary constraint for power-sensitive designs. Evaluate the need for standby functionality to manage power consumption during idle periods. Assess the physical space available for the 2.0x1.6mm package size. Compare alternative frequencies if the exact 76.121875 MHz value does not match the target application needs.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series typically offers various standard frequencies and supports low-voltage operations. These components are designed for applications requiring reliable clock generation in compact electronic devices. The manufacturer has a history of producing frequency control products, positioning these oscillators within their standard XO lineup.

Replacement Considerations

Direct substitutes must match the 76.121875 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical parameters such as load capacitance and drive level. Cross-reference with other manufacturers offering similar small-form-factor oscillators with identical electrical specifications.