18QHTF21-17.73448-PD

Oscillators Overview

The 18QHTF21-17.73448-PD is a crystal oscillator (XO) manufactured by Mercury Electronic Ind., Co., Ltd. It operates at a frequency of 17.73448 MHz with an LVCMOS output logic level. 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 2.0 x 1.6 mm. The component is designed for standard applications requiring precise clock signals.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby mode for power reduction
• Compact surface-mount package design

Oscillators Applications

• General clock signal generation
• Embedded system timing references
• Digital circuit synchronization

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Ensure the 1.8V supply voltage aligns with the target circuit design. Confirm that the 4-SMD no-lead package footprint matches the PCB layout specifications to avoid assembly issues during manufacturing.

Oscillators Selection Notes

Select this component when a small form factor is required alongside standard LVCMOS compatibility. Consider the 1.8V operating voltage constraint relative to other available logic families. Evaluate the need for standby functionality if power efficiency is a critical design parameter for the end application.

Oscillators Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series typically offers various frequencies within a standardized 2.0x1.6mm package. The '-PD' suffix indicates the inclusion of a power-down feature, distinguishing it from standard continuous-operation variants within the same physical footprint family.

Oscillators Replacement Considerations

Direct substitutes must match the 17.73448 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter against the original specification sheet.