18QHTF21-40.800-PD

Oscillators Overview

The 18QHTF21-40.800-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind., Co., Ltd. It operates at a nominal frequency of 40.8 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a power-down standby function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is designed for timing applications requiring precise clock signals in space-constrained electronic systems.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Includes power-down standby functionality
• Provides LVCMOS output signal compatibility

Oscillators Applications

• General-purpose digital circuit timing
• Embedded system clock generation
• Consumer electronics internal synchronization

Oscillators Procurement Notes

Verify the specific datasheet from Mercury Electronic Ind., Co., Ltd. to confirm exact electrical tolerances and operating temperature ranges before integration. Ensure the 1.8V supply rail stability matches the oscillator requirements. Confirm the 4-SMD package footprint aligns with the PCB layout design to prevent assembly issues.

Oscillators Selection Notes

Select this model when a 40.8 MHz clock source is required with minimal power consumption. The 1.8V specification suits low-power portable devices. The small 2.0x1.6mm footprint allows for high-density board layouts. Consider the LVCMOS interface compatibility with the target microcontroller or FPGA inputs.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies within a standardized 4-SMD no-lead package. The suffix PD indicates the inclusion of a power-down control feature, distinguishing it from continuous-operation variants in the same physical form factor.

Oscillators Replacement Considerations

Direct substitutes include other 40.8 MHz LVCMOS oscillators in 2.0x1.6mm packages with 1.8V operation. Verify pinout compatibility and electrical specifications against original Mercury datasheets before substitution.