18QHTF21-19.660-PD

Oscillators Overview

The 18QHTF21-19.660-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 19.66 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, functioning at a supply voltage of 1.8V. A key operational feature is the inclusion of a standby or power-down mode to reduce energy consumption when not in active 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 processes.

Oscillators Feature Summary

• Supports LVCMOS output signal compatibility
• Includes standby power-down functionality
• Operates on 1.8V supply voltage

Oscillators Applications

• General electronic circuit timing references
• Low-power embedded system clock sources
• Portable device frequency control

Oscillators Procurement Notes

Verify that the specific part number matches the required 19.66 MHz frequency and 1.8V operating voltage. Confirm the 4-SMD no-lead package footprint aligns with the PCB design. Ensure the supplier provides documentation confirming the LVCMOS output type and standby capability as specified.

Oscillators Selection Notes

Select this component when a precise 19.66 MHz clock source is required for LVCMOS-compatible digital circuits. Consider the 1.8V supply requirement and the availability of a power-down mode for battery-operated applications. The small 2.0x1.6 mm package size makes it suitable for space-constrained designs.

Oscillators Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronic Ind., Co., Ltd., which offers various frequencies within the same physical package. The manufacturer has a history of producing quartz crystals and frequency control products. This specific model represents a standard XO variant optimized for low-voltage operation.

Oscillators Replacement Considerations

Other models in the 18QHTF21 series share the same package and electrical interface but differ in frequency. Verify that any substitute maintains the 19.66 MHz frequency and 1.8V LVCMOS specifications.