18QHTF21-50.040-PD

Overview

The 18QHTF21-50.040-PD is a 50.04 MHz crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a supply voltage of 1.8V and utilizes LVCMOS output logic. The component features a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. It includes a Standby (Power Down) function for energy management. The device is designed for standard frequency control applications requiring precise timing signals in low-voltage digital systems.

Feature Summary

• Compact 2.0x1.6mm surface-mount package suitable for space-constrained designs
• Low voltage operation at 1.8V with LVCMOS output compatibility
• Integrated standby mode for power reduction when not in use

Applications

• Digital signal processing circuits
• Communication equipment timing references
• Portable electronic devices requiring low power consumption

Procurement Notes

Verify the specific frequency suffix matches the required system clock speed. Confirm that the 1.8V supply voltage aligns with the target circuit design. Ensure the 4-SMD no-lead package footprint is compatible with the PCB layout. Check for any specific RoHS or environmental compliance requirements mandated by the end product regulations.

Selection Notes

Select this component when a precise 50.04 MHz reference is needed in a low-power environment. The 1.8V operating voltage makes it suitable for modern battery-powered or low-voltage logic systems. Consider the small form factor if board space is limited. Verify that the LVCMOS output level is compatible with the receiving input pins of the connected microcontroller or FPGA.

Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequencies within a standardized 2.0x1.6mm package. The 'PD' suffix typically indicates the inclusion of a power-down feature. These components are widely used in consumer electronics and industrial controls where size and power efficiency are critical constraints.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with different frequency suffixes if the exact 50.04 MHz is not required. Cross-reference with other manufacturers offering 2.0x1.6mm 1.8V LVCMOS oscillators with standby functions. Ensure pinout and electrical characteristics match before substitution.