18QHTF21-40.078-PD

Oscillators Overview

The 18QHTF21-40.078-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 40.078 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down function to reduce consumption when not in active use. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6 mm.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby and power-down functionality
• Utilizes LVCMOS output logic for digital interfacing
• Features a small form factor 4-SMD no lead package

Oscillators Applications

• Portable electronic devices requiring low power consumption
• Communication systems utilizing standard clock signals
• Embedded systems needing precise timing references
• Consumer electronics with space constraints

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Ensure the 1.8V supply rail is stable to maintain signal integrity. Confirm that the LVCMOS output levels are compatible with the receiving logic inputs. Check the operating temperature range specifications to ensure reliability under your environmental conditions.

Oscillators Selection Notes

Select this component when a 40.078 MHz reference is required in a minimal footprint. The 1.8V supply requirement makes it suitable for modern low-power digital circuits. The standby feature is advantageous for battery-operated applications where power efficiency is critical. Consider the LVCMOS interface compatibility with your microcontroller or FPGA I/O standards.

Oscillators Part Context

This part belongs to the Mercury Electronics 18QHTF21 series of surface-mount oscillators. The series offers various frequencies within a standardized 2.0x1.6 mm package. It is designed for high-volume manufacturing and provides consistent performance across different production batches. The manufacturer has extensive experience in quartz crystal technology.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 variants with different frequencies if the timing requirement changes. Cross-reference with other manufacturers offering 2.0x1.6mm LVCMOS oscillators with 1.8V operation. Verify pinout compatibility and electrical parameters before substituting.