18QHTF21-1.1385-OE

Overview

The 18QHTF21-1.1385-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 1.1385 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and includes an enable/disable control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The component supports an operating temperature range of -40°C to 85°C and maintains a frequency stability of ±50ppm.

Feature Summary

• Integrates an enable/disable pin for power management control
• Provides LVCMOS output signals compatible with standard digital interfaces
• Utilizes a small form factor 4-SMD no-lead surface mount package

Applications

• Embedded systems requiring low-frequency timing references
• Consumer electronics with space-constrained PCB layouts
• Industrial control modules operating within extended temperature ranges

Procurement Notes

Verify the specific frequency suffix matches the required 1.1385 MHz specification. Confirm that the 1.8V supply voltage aligns with the target circuit design. Ensure the LVCMOS output logic level is compatible with the receiving device inputs. Check that the 4-SMD no-lead package footprint fits the designated board area. Validate the operating temperature range against environmental requirements.

Selection Notes

Select this component when a precise 1.1385 MHz clock signal is necessary for system synchronization. Consider the 1.8V supply requirement to ensure compatibility with low-voltage logic families. Evaluate the ±50ppm frequency stability against jitter sensitivity needs. Assess the physical size constraints to confirm the 2.0x1.6mm package fits the assembly. Review the enable/disable feature if power efficiency during idle states is critical.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd, a Taiwan-based manufacturer specializing in frequency control products. The series offers various standard frequencies with LVCMOS outputs. Mercury Electronic has a long history in quartz crystal manufacturing, providing timing solutions for diverse electronic applications.

Replacement Considerations

Direct substitutes include other 18QHTF21 series variants with identical electrical characteristics but different frequency suffixes, such as 18QHTF21-1.000-OE or 18QHTF21-13.1313-OE, provided the frequency difference is acceptable for the application.