18QHTF21-70.8333-OE

Overview

The 18QHTF21-70.8333-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 70.8333 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature for power management. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount assembly on printed circuit boards.

Feature Summary

• Provides stable timing signals via LVCMOS output interface
• Supports active low or high enable/disable control functionality
• Designed for surface-mount integration using leadless SMD packaging

Applications

• Precision timing circuits requiring 70.8333 MHz reference
• Embedded systems utilizing 1.8V logic levels
• Compact electronic devices requiring surface-mount oscillators

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before procurement. Confirm that the 1.8V supply voltage aligns with your target platform's power rails. Ensure the 4-SMD no-lead footprint matches your PCB layout constraints. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure reliable assembly.

Selection Notes

Select this component when a precise 70.8333 MHz clock source is required within a 1.8V logic environment. The LVCMOS output is suitable for direct interfacing with digital components operating at this voltage level. Consider the enable/disable pin if power efficiency during idle states is a critical design requirement. Evaluate the thermal performance and stability needs against the standard specifications provided in the datasheet.

Part Context

This model belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series typically offers various frequency options within a consistent 4-SMD form factor. These oscillators are engineered for applications demanding reliable frequency generation in space-constrained designs. The manufacturer specializes in quartz-based frequency control products with extensive industry experience.

Replacement Considerations

Direct substitutes must match the 70.8333 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify electrical compatibility including current consumption and enable logic polarity. Cross-reference pinouts to ensure functional equivalence without PCB redesign.