18QHTF21-20.970-PD

Oscillators Overview

The 18QHTF21-20.970-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 20.97 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, functioning with a supply voltage of 1.8V. It features a power-down capability, allowing for standby mode operation to reduce power consumption when not in use. The component is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6 mm, suitable for surface-mount assembly.

Oscillators Feature Summary

• LVCMOS output interface for digital clock signal generation
• Integrated power-down functionality for standby mode operation
• Compact 4-SMD no-lead surface-mount package design

Oscillators Applications

• Low-voltage digital circuit clocking
• Portable electronic devices requiring power efficiency
• Embedded systems utilizing LVCMOS logic families

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply voltage aligns with your system's power rails. Confirm that the 4-SMD no-lead package footprint matches your PCB layout constraints. Request the official datasheet from Mercury Electronics for precise electrical characteristics and reliability data.

Oscillators Selection Notes

Select this component when a stable 20.97 MHz clock source is required for LVCMOS-compatible circuits. The choice is driven by the need for low-voltage operation at 1.8V and the inclusion of a power-down feature for energy management. The small 2.0x1.6 mm package size makes it suitable for space-constrained designs. Consider the manufacturer's history in quartz crystal production as a factor for frequency stability.

Oscillators Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronic Ind. Co., Ltd. The series offers various frequencies, including 6.77 MHz, 51.2 MHz, and 20.97 MHz, all sharing similar package and electrical characteristics. Mercury Electronics is a pioneer in the Taiwanese quartz crystal industry, established in 1973, providing a background of specialized manufacturing expertise in frequency control products.

Oscillators Replacement Considerations

Direct substitutes within the same series include models such as 18QHTF21-6.770-PD or 18QHTF21-51.200-PD if different frequencies are acceptable. Other manufacturers producing 2.0x1.6 mm LVCMOS oscillators with 1.8V operation may serve as alternatives, provided pin compatibility and electrical specifications match exactly.