18QHTF21-7.3728-PD

Overview

The 18QHTF21-7.3728-PD is a 7.3728 MHz crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a supply voltage of 1.8V and features LVCMOS output levels. The device provides ±50ppm frequency stability and includes a standby (power down) function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Provides precise timing signals with ±50ppm frequency stability
• Supports low-voltage operation at 1.8V with LVCMOS output compatibility
• Integrates a standby mode to reduce power consumption during idle periods
• Utilizes a small form factor surface-mount package for space-constrained designs

Applications

• Timing-critical electronic circuits requiring stable clock sources
• Portable devices necessitating low-power operation and standby capabilities
• Embedded systems utilizing LVCMOS-compatible interfaces
• Precision timing applications in consumer electronics

Procurement Notes

Verify the specific frequency tolerance and package dimensions against the official datasheet before integration. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the LVCMOS output level is compatible with the receiving logic inputs. Check for any specific handling requirements associated with the no-lead SMD package during assembly.

Selection Notes

Select this component when a 7.3728 MHz clock signal is required with high stability. Consider the 1.8V operating voltage for compatibility with modern low-power logic families. Evaluate the need for a standby feature to manage power efficiency in battery-operated or intermittent-use applications. The compact 2.0x1.6mm footprint makes it suitable for dense PCB layouts.

Part Context

This model belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies tailored for different timing needs while maintaining consistent electrical characteristics such as 1.8V operation and LVCMOS outputs. The 'PD' suffix indicates the inclusion of a power-down capability within the device functionality.

Replacement Considerations

Direct substitutes must match the 7.3728 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify equivalent frequency stability specifications. Cross-reference pinouts and electrical parameters with alternative manufacturers' data sheets to ensure functional compatibility without circuit modification.