18QHTF21-51.233-PD

Overview

The 18QHTF21-51.233-PD is a crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 51.233 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 2.0x1.6 mm. This component is designed for standard clock applications requiring precise timing signals.

Feature Summary

• Supports low voltage operation at 1.8V
• Includes standby and power-down functionality
• Utilizes LVCMOS output logic for digital interfacing
• Features a compact surface-mount package

Applications

• General purpose clock signal generation
• Digital circuit timing reference
• Embedded system clock sources

Procurement Notes

Verify the specific frequency suffix matches the required 51.233 MHz specification, as this series offers multiple frequency options. Confirm that the 1.8V supply voltage aligns with the target system design. Ensure the 4-SMD no-lead package footprint fits the PCB layout constraints. Check for any specific ordering suffixes that may indicate temperature range or tolerance variations not explicitly detailed in general descriptions.

Selection Notes

Select this model when a small form factor is required alongside standard LVCMOS compatibility. The 1.8V operating voltage makes it suitable for modern low-power digital designs. Consider the 2.0x1.6 mm package size for space-constrained layouts. Verify that the standard frequency accuracy meets the application requirements without needing additional calibration.

Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series typically covers various frequencies within the same physical footprint and electrical interface standards. The 'PD' suffix likely indicates the inclusion of a power-down feature, distinguishing it from continuous-operation variants within the same product line.

Replacement Considerations

Direct substitutes must match the 51.233 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and thermal characteristics before substitution.