18QHTF21-74.948125-PD

Overview

The 18QHTF21-74.948125-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co. Ltd. It operates at a frequency of 74.948125 MHz and utilizes LVCMOS output logic levels. The device functions with a supply voltage of 1.8V and includes a standby or power-down feature for energy management. It is housed in a compact 4-SMD, No Lead package suitable for surface-mount applications.

Feature Summary

• Standard crystal oscillator configuration with LVCMOS output interface
• Integrated standby mode allowing for power-down functionality
• Designed for low-voltage operation at 1.8V supply

Applications

• General-purpose clock signal generation in electronic circuits
• Timing reference sources for digital systems requiring 1.8V logic
• Embedded devices utilizing surface-mount technology

Procurement Notes

Verify the specific ordering suffix to ensure compatibility with required voltage and package specifications. Confirm that the LVCMOS output type matches the receiving circuit's input requirements. Check for any environmental certifications or RoHS compliance status if mandated by your project standards before finalizing the purchase order.

Selection Notes

Select this component when a precise 74.948125 MHz timing source is required within a 1.8V system architecture. The choice is driven by the need for a standard XO with power-down capabilities rather than temperature-compensated stability. Ensure the PCB layout supports the 4-SMD no-lead footprint dimensions specified in the official datasheet.

Part Context

Mercury Electronic Ind. Co. Ltd is a manufacturer specializing in frequency control products, including quartz crystals and oscillators. This part belongs to their series of surface-mount crystal oscillators designed for consumer and industrial electronics. The company has a history of producing timing components for various market sectors.

Replacement Considerations

Cross-reference with other 1.8V LVCMOS oscillators operating at 74.948125 MHz in a 4-SMD package. Verify pinout compatibility and electrical characteristics against alternative suppliers' datasheets to ensure functional equivalence without redesigning the host circuit.