18QHTF21-77.885-PD

Overview

The 18QHTF21-77.885-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 77.885 MHz with an LVCMOS output logic level. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This component is designed for applications requiring precise clock signals with low power consumption.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated standby mode to reduce power consumption
• Compact surface-mount package design

Applications

• Digital signal processing systems
• Communication equipment clocking
• Consumer electronics timing circuits

Procurement Notes

Verify the specific supply voltage requirement (1.8V) against your system design before procurement. Confirm that the LVCMOS output levels are compatible with the receiving logic inputs. Ensure the 4-SMD no-lead package footprint matches your PCB layout guidelines. Check for any specific handling requirements related to the surface-mount technology used in this component.

Selection Notes

Select this model when a 77.885 MHz frequency is required with low voltage operation. Consider the LVCMOS output type for direct interfacing with digital components. The standby feature makes it suitable for battery-powered or power-sensitive applications. Evaluate the small form factor if space constraints are critical in the design.

Part Context

This oscillator belongs to the Mercury Electronics XO series, which specializes in quartz-based frequency control products. The manufacturer has decades of experience in producing crystals and oscillators. The 18QHTF21 series typically offers standard performance characteristics with various voltage and frequency options available within the same package family.

Replacement Considerations

Direct substitutes may include other 77.885 MHz LVCMOS oscillators in 2.0x1.6mm packages from different manufacturers. Ensure equivalent electrical specifications such as supply voltage, output logic, and package dimensions. Verify that any replacement part maintains similar stability and phase noise characteristics if specified in the original design.