18QHTF21-1.980-PD

Overview

The 18QHTF21-1.980-PD is a crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 1.98 MHz and utilizes LVCMOS output logic. 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 2.0x1.6mm, suitable for surface-mount applications.

Feature Summary

• Supports low-voltage operation at 1.8V
• Integrates standby and power-down functionality
• Utilizes LVCMOS output interface
• Features a compact 4-SMD no-lead package

Applications

• Portable electronic devices requiring low power consumption
• Communication systems utilizing 1.98 MHz clock signals
• Embedded control circuits with space constraints

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 2.0x1.6mm footprint matches your PCB layout. Check for availability from authorized distributors as stock levels may vary.

Selection Notes

Select this component when a precise 1.98 MHz clock source is required in a minimal footprint. The 1.8V operating voltage makes it suitable for battery-powered or low-voltage digital logic families. The integrated power-down feature aids in extending battery life. Compare against similar Mercury models like the 18QHTF21-8.000-PD if different frequencies are needed.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various standard frequencies and voltage options. The 'PD' suffix typically indicates a specific packaging or tape-and-reel configuration. These components are designed for general-purpose timing applications in consumer and industrial electronics.

Replacement Considerations

Direct substitutes include other 1.98 MHz XO variants from Mercury Electronics with compatible pinouts and voltages. Cross-reference with 3QHTF32 series parts if a larger package size is acceptable. Verify electrical specifications match exactly before substitution.