18QHTF21-7.8432-PD

Overview

The 18QHTF21-7.8432-PD is a crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 7.8432 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a Standby (Power Down) enable/disable function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Supports LVCMOS output logic for standard digital interfacing
• Includes standby or power-down functionality for energy management
• Utilizes a small form factor 4-SMD no lead package

Applications

• Portable electronic devices requiring low power consumption
• Communication systems utilizing standard clock signals
• Embedded control circuits needing precise timing references

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design 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. Cross-reference the manufacturer datasheet for detailed electrical characteristics to guarantee compatibility with your application's timing specifications.

Selection Notes

Select this component when a low-profile surface mount oscillator is required for 1.8V logic applications. Consider the LVCMOS output type for direct interface with compatible digital inputs. Evaluate the physical size constraints of the 2.0x1.6 mm package against available board space. Assess the need for standby functionality to manage power efficiency in battery-operated designs compared to continuous operation oscillators.

Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series typically offers various frequencies within a standardized small outline package. These components are designed for general-purpose clock generation in consumer electronics and industrial applications where space and power efficiency are critical factors.

Replacement Considerations

Direct substitutes may include other 18QHTF21 series variants with different frequencies but identical pinouts and electrical characteristics. Verify that any replacement maintains the same 1.8V supply requirement and LVCMOS output logic. Ensure the alternative part supports the necessary standby function if power management is a design constraint.