18QHTF21-70.002-PD

Overview

The 18QHTF21-70.002-PD is a 70.002 MHz crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a supply voltage of 1.8V and utilizes LVCMOS output logic. The device features a Standby (Power Down) control function and is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• LVCMOS output logic for standard digital interfacing
• Integrated standby mode for power management
• Compact surface-mount package design

Applications

• General clock signal generation
• Digital system timing references
• Embedded controller circuits

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against the specific application circuit design. Confirm that the 1.8V supply rail stability meets the oscillator's operational specifications to ensure consistent performance and avoid frequency drift during operation.

Selection Notes

Select this component when a low-voltage 1.8V supply is available and space constraints require a 2.0x1.6 mm footprint. Ensure the host system supports LVCMOS logic levels and requires a standby control feature for power optimization in portable or energy-efficient designs.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies and voltage options, typically utilizing quartz resonators for stable frequency generation in consumer electronics and industrial applications requiring precise timing signals.

Replacement Considerations

Direct substitutes include other 1.8V LVCMOS oscillators in 2.0x1.6mm packages with similar standby functionality. Verify pin compatibility and electrical parameters before substitution.