18QHTF21-7.488-PD

Overview

The 18QHTF21-7.488-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 7.488 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or 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. The component is designed for surface-mount applications and offers lead-free status compliant with RoHS standards.

Feature Summary

• Integrates LVCMOS output logic for standard digital interface compatibility
• Features a dedicated standby or power-down mode to reduce power consumption
• Utilizes a compact 4-SMD no-lead surface-mount package design

Applications

• General-purpose timing reference for embedded systems
• Clock source for low-power consumer electronics
• Timing module for portable devices requiring small form factors

Procurement Notes

Verify the specific frequency suffix matches the required 7.488 MHz specification, as the model number indicates a precise frequency code. Confirm that the 1.8V supply voltage aligns with the target circuit design. Ensure the 4-SMD no-lead package footprint corresponds to the PCB layout requirements. Check for RoHS compliance documentation if environmental regulations apply to the final assembly.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS interface. The choice is driven by the need for a small 2.0x1.6mm footprint suitable for space-constrained designs. Consider the integrated power-down feature if system-level power management is a priority. Validate that the operating temperature range meets the environmental conditions of the intended application.

Part Context

This part belongs to the Mercury Electronics SMD oscillator series, which focuses on quartz-based timing solutions. The manufacturer specializes in frequency control products including crystals, oscillators, and filters. This specific model represents a standard XO variant within their portfolio, distinct from differential or temperature-compensated types.

Replacement Considerations

Direct substitutes must match the 7.488 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics before swapping manufacturers.