18QHTF21-20.500-PD

Oscillators Overview

The 18QHTF21-20.500-PD is a crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 20.5 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. 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
• Integrates power-down capability for standby mode
• Provides standard LVCMOS signal output

Oscillators Applications

• Portable electronic devices requiring low power consumption
• Communication equipment utilizing 20.5 MHz clock signals
• Embedded systems with limited space constraints

Oscillators Procurement Notes

Verify the specific ordering suffix to ensure compatibility with required packaging formats such as strip packaging. Confirm that the 1.8V supply requirement aligns with the target system design. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications before finalizing procurement orders.

Oscillators Selection Notes

Select this component when a precise 20.5 MHz reference is needed alongside strict power efficiency requirements. The integrated power-down feature makes it suitable for battery-operated applications. Consider the small 2.0x1.6 mm form factor for dense circuit board designs where space is limited compared to larger oscillator packages.

Oscillators Part Context

This part belongs to the Mercury Electronics XO series, which specializes in quartz-based frequency control products. The manufacturer has decades of experience in Taiwan producing quartz crystals. This specific model represents a modern surface-mount solution designed for high-volume consumer and industrial electronics markets.

Oscillators Replacement Considerations

Direct substitutes must match the 20.5 MHz frequency, 1.8V supply, and LVCMOS output type. Verify pinout compatibility for the 4-SMD no-lead package. Check if alternative manufacturers offer equivalent timing performance within the same physical footprint constraints.