18QHTF21-75.655-PD

Overview

The 18QHTF21-75.655-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 75.655 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a Standby function for power down capabilities. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Supports low voltage operation at 1.8V
• Includes standby mode for power management
• Utilizes LVCMOS output interface

Applications

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

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before integration. Ensure the 1.8V supply rail stability matches the component specifications. Confirm that the 4-SMD no-lead package footprint aligns with the PCB design guidelines provided by Mercury Electronics to guarantee reliable soldering and electrical performance.

Selection Notes

Select this model when a precise 75.655 MHz clock source is required with minimal power consumption. The LVCMOS output ensures compatibility with standard digital logic families. Consider the small 2.0x1.6mm form factor for space-constrained designs. Verify that the operating temperature range meets the environmental conditions of the target application.

Part Context

This component belongs to the 18QHTF series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies with standardized LVCMOS outputs. The 'PD' suffix typically indicates specific packaging or tape-and-reel configuration details as documented by the manufacturer. These devices are part of Mercury's long-standing portfolio of quartz-based frequency control products.

Replacement Considerations

Direct substitutes must match the 75.655 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package dimensions. Check equivalent models from other manufacturers ensuring identical pinout and electrical characteristics to maintain board compatibility without redesign.