18QHTF21-8.467-PD

Overview

The 18QHTF21-8.467-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a nominal frequency of 8.467 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications, requiring a 2.5V supply voltage. It features a power-down (PD) function to reduce consumption when not in use. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby or power-down functionality for energy efficiency
• Utilizes a small-footprint surface-mount package design

Applications

• General-purpose clock signal generation in embedded systems
• Timing reference for low-voltage digital circuits
• Consumer electronics requiring compact timing solutions

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the target application circuit before procurement. Ensure the 2.5V supply voltage aligns with the system power architecture. Confirm that the 4-SMD no-lead package footprint matches the PCB layout constraints. Cross-reference the datasheet for precise electrical characteristics to guarantee signal integrity.

Selection Notes

Select this component when a 2.5V supply is available and a 8.467 MHz clock source is required. The LVCMOS output is suitable for standard digital logic families. Consider the physical size constraints due to the 2.0x1.6mm package. Evaluate if the power-down feature provides sufficient benefit for the specific power management strategy of the end product.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized 2.0x1.6mm SMD package. The series typically supports multiple supply voltages and output types. The 'PD' suffix indicates the inclusion of a power-down control pin, distinguishing it from standard continuous-operation oscillators in the same form factor.

Replacement Considerations

Direct substitutes include other 8.467 MHz XO components in 2.0x1.6mm packages with 2.5V operation and LVCMOS outputs. Verify pinout compatibility and electrical specifications such as jitter and phase noise before substitution.