18QHTF21-6.790-PD

Overview

The 18QHTF21-6.790-PD is a crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 6.79 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and features a power-down (standby) function to reduce consumption when inactive. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6 mm, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Integrated power-down capability for standby mode operation
• LVCMOS output interface compatible with standard digital logic
• Compact 4-SMD no-lead surface mount package design

Applications

• Battery-powered portable electronic devices
• General-purpose digital circuit timing references
• Embedded systems requiring low-power clock sources

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct voltage and output type compatibility. Confirm that the 1.8V supply requirement aligns with your system design before procurement. Check for RoHS compliance status if environmental regulations apply to your manufacturing process.

Selection Notes

Select this component when a low-voltage 1.8V clock source is required for space-constrained designs. The 6.79 MHz frequency suits specific communication or processing needs. Ensure the PCB layout supports the small 2.0x1.6 mm footprint and that the target logic family accepts LVCMOS signal levels directly.

Part Context

This part belongs to the 18QHTF21 series of MEMS or crystal oscillators from Mercury Electronics. The series typically offers various frequencies and supply voltages. The 'PD' suffix indicates the inclusion of a power-down control feature, distinguishing it from standard continuous-operation variants within the same product line.

Replacement Considerations

Consult the official Mercury Electronics datasheet for direct pin-compatible substitutes within the 18QHTF21 series. Verify that any alternative part matches the 1.8V supply, LVCMOS output, and 6.79 MHz frequency requirements exactly.