18QHTF21-1.828-PD

Overview

The 18QHTF21-1.828-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 1.828 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and features a standby power-down function to reduce consumption. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Supports low-voltage operation at 1.8V for energy efficiency
• Includes a standby mode for power-down capability
• Utilizes LVCMOS output logic for digital interface compatibility

Applications

• Battery-powered portable devices
• Low-power embedded systems
• Compact consumer electronics requiring precise timing

Procurement Notes

Verify the specific frequency suffix matches the required 1.828 MHz specification, as the series supports various frequencies. Confirm the 1.8V supply requirement aligns with the target system design. Ensure the 4-SMD no-lead package footprint fits the PCB layout constraints. Check RoHS compliance status if environmental regulations apply to the end product.

Selection Notes

Choose this component when a low-frequency, low-voltage clock source is needed for space-constrained designs. The small 2.0x1.6 mm footprint makes it suitable for dense PCB layouts. Consider the standby feature if power management is critical. Ensure the LVCMOS output is compatible with the receiving logic inputs of the connected microcontroller or FPGA.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequency options within the same physical package. The series is designed for applications requiring stable clock signals in minimal form factors. Mercury Electronics has a long history in crystal industry manufacturing, providing reliable frequency control solutions.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with different frequency suffixes if the electrical parameters match. Cross-reference with similar 4-SMD no-lead oscillators from other manufacturers ensuring identical 1.8V supply and LVCMOS output characteristics.