18QHTF21-91.700-OE

Overview

The 18QHTF21-91.700-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 91.7 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and includes an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm. Key electrical specifications include a frequency stability of ±50ppm and an operating temperature range from -40°C to +85°C. The maximum supply current is rated at 26mA.

Feature Summary

• Supports 1.8V supply voltage with integrated enable/disable functionality
• Delivers LVCMOS output signals for digital interface compatibility
• Provides high frequency stability of ±50ppm across the operational temperature range

Applications

• Embedded systems requiring precise timing references
• Communication equipment utilizing LVCMOS interfaces
• Portable electronic devices necessitating low power consumption

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail can maintain stable voltage under peak current conditions of 26mA. Ensure the PCB footprint matches the 4-SMD No Lead package dimensions of 2.0x1.6mm. Cross-reference the manufacturer datasheet for any updates regarding the OE suffix designation to ensure functional equivalence with existing designs.

Selection Notes

Select this component when a 91.7 MHz clock source is required with strict size constraints due to its 2.0x1.6mm form factor. The LVCMOS output makes it suitable for direct connection to digital logic without additional level shifting. Consider the ±50ppm stability specification for applications sensitive to timing jitter. The enable pin allows for dynamic power saving, making it appropriate for battery-operated or energy-efficient system architectures.

Part Context

This oscillator belongs to the Mercury Electronics 18QHTF21 series, which features surface-mount packaging optimized for automated assembly. The series offers various frequency options within a standardized footprint, facilitating design reuse across different product lines. Mercury Electronics specializes in quartz-based timing solutions, providing components for consumer electronics and industrial applications.

Replacement Considerations

Direct substitutes include other 91.7 MHz LVCMOS oscillators in 4-SMD packages with compatible 1.8V operation. Verify pinout compatibility and thermal characteristics when replacing. Check if alternative manufacturers offer equivalent stability ratings and enable functions.