18QHTF21-18.9375-OE

Oscillators Overview

The 18QHTF21-18.9375-OE is an active crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 18.9375 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and features enable/disable control functionality for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• LVCMOS output interface for standard digital logic compatibility
• Integrated enable/disable pin for dynamic power control
• Compact 2.0x1.6mm SMD footprint for space-constrained designs

Oscillators Applications

• Timing and clock signal generation in electronic devices
• Embedded systems requiring stable reference frequencies
• Consumer electronics with low-voltage requirements

Oscillators Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to ensure compatibility with required frequency tolerance and load conditions. Confirm that the 1.8V supply voltage aligns with the target system's power rails before integration. Check for any recent revisions to the mechanical drawing or electrical specifications to avoid mismatches during production.

Oscillators Selection Notes

Select this component when a low-profile, 1.8V compatible oscillator is needed for 18.9375 MHz applications. Ensure the design accommodates the 4-SMD no-lead package constraints. Consider thermal performance and PCB layout guidelines provided in the official documentation to maintain signal integrity and frequency stability under operating conditions.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequency options within a standardized small outline package. The series is designed for general-purpose timing applications where size and power consumption are critical factors. Similar models in the family include variants with different frequencies such as 13.57375 MHz and 37.209375 MHz, sharing the same physical and electrical form factor.

Oscillators Replacement Considerations

Direct substitutes may include other 18.9375 MHz LVCMOS oscillators in 2.0x1.6mm packages from manufacturers like Epson or SiTime, provided pinout and electrical parameters match exactly. Cross-reference with Mercury's own part numbers for updated versions or alternative frequencies if the exact model is unavailable.