18QHTF21-75.365-PD

Overview

The 18QHTF21-75.365-PD is a crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 75.365 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a Standby function for power down control. 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 interface
• Includes standby mode capability for power management
• Designed for surface-mount assembly

Applications

• General clock signal generation
• Digital circuit timing references
• Embedded system clock sources

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the official datasheet before integration. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD no-lead package footprint matches the PCB design guidelines to guarantee proper soldering and mechanical stability during operation.

Selection Notes

Select this component when a precise 75.365 MHz clock source is required for low-voltage digital applications. The choice is driven by the need for a small form factor suitable for space-constrained designs. Consider the LVCMOS compatibility with downstream logic families and the availability of standby functionality for energy-efficient system architectures.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series typically offers various frequency options within a consistent 2.0x1.6mm SMD package. The 'PD' suffix indicates the inclusion of a power-down or standby pin feature, distinguishing it from non-stanby variants in the same physical footprint family.

Replacement Considerations

Direct substitutes must match the 75.365 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify electrical parameters such as phase noise and jitter specifications against the original datasheet to ensure functional equivalence in the specific application.