18QHTF21-39.315-PD

Oscillators Overview

The 18QHTF21-39.315-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 39.315 MHz and utilizes LVCMOS output logic. The device is designed for low-power applications, featuring a 1.8V supply voltage and a standby power-down mode. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0x1.6 mm. This component serves as a precise clock source for digital circuits requiring stable timing signals.

Oscillators Feature Summary

• LVCMOS output interface for direct digital logic compatibility
• Integrated standby power-down mode for energy efficiency
• Compact 4-SMD no-lead surface mount package design

Oscillators Applications

• General purpose clock generation for embedded systems
• Timing reference for microcontrollers and processors
• Data communication interfaces requiring stable clock sources

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply voltage aligns with your system's power rails. Confirm that the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for any specific operating temperature range limitations required by your application environment to ensure reliable performance.

Oscillators Selection Notes

Select this oscillator when a 39.315 MHz clock signal is required with LVCMOS outputs. Consider the 1.8V operating voltage and standby capability for power-sensitive designs. The small 2.0x1.6 mm package is suitable for space-constrained layouts. Evaluate if the standard frequency stability meets your system's timing accuracy needs compared to higher-grade alternatives.

Oscillators Part Context

This part belongs to the 18QHTF21 series of SMD oscillators from Mercury Electronics. The series offers various frequencies with consistent 1.8V operation and LVCMOS outputs. The 'PD' suffix indicates the inclusion of a power-down control feature. These components are widely used in consumer electronics and industrial equipment where size and power consumption are critical factors.

Oscillators Replacement Considerations

Direct replacements must match the 39.315 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as rise/fall times and duty cycle. Cross-reference with other manufacturers' equivalent parts ensuring identical form factor and functional specifications.