18QHTF21-12.075-PD

Overview

The 18QHTF21-12.075-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 12.075 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a power-down (standby) function to reduce consumption. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This component serves as a precise clock source for digital circuits requiring low-voltage operation.

Feature Summary

• Supports LVCMOS output logic for direct interface with digital systems
• Includes standby mode capability via power-down control
• Operates on a single 1.8V supply rail
• Utilizes a small form factor surface-mount package

Applications

• Battery-powered portable electronic devices
• Low-voltage digital signal processing circuits
• Communication modules requiring precise timing references
• Embedded systems with space-constrained PCB layouts

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the 4-SMD no-lead package footprint matches the board layout specifications. Check for any specific ordering suffixes that may indicate different packaging or tape-and-reel quantities if required for production.

Selection Notes

Select this oscillator when a low-voltage 1.8V supply is available and LVCMOS compatibility is required. The compact 2.0x1.6mm size makes it suitable for dense PCB designs. Consider the power-down feature if energy efficiency during idle states is a priority. Ensure the operating temperature range meets the environmental conditions of the final application.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd, which specializes in quartz crystal frequency control products. The series includes various frequencies and packages, all sharing common electrical characteristics like LVCMOS outputs and low-voltage operation. Mercury Electronics has a long history in the quartz industry, providing reliable timing solutions.

Replacement Considerations

Direct replacements must match the 12.075 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical parameters such as current consumption and phase noise. Cross-reference with other manufacturers' equivalent low-profile oscillators if availability is an issue.