18QHTF21-12.463-PD

Overview

The 18QHTF21-12.463-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 12.463 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 applications requiring precise timing signals within a small form factor.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated standby mode to reduce power consumption
• Compact 4-SMD no-lead surface mount package

Applications

• General purpose timing clock generation
• Embedded systems requiring low-power oscillators
• Consumer electronics with space constraints

Procurement Notes

Verify the specific frequency tolerance and operating temperature range against the official datasheet before integration. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD package footprint matches the PCB design guidelines. Check for any RoHS compliance documentation if required by project specifications.

Selection Notes

Select this component when a 12.463 MHz reference signal is required in a minimal footprint. The LVCMOS output is suitable for direct connection to digital logic inputs. Consider the 1.8V operation if the system architecture prioritizes lower voltage domains. The standby feature offers flexibility for power-sensitive designs compared to always-on alternatives.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on small-sized crystal oscillators. The series typically offers various frequencies within a 2.0x1.6 mm package. It serves as a timing source for microcontrollers and communication interfaces where size and power efficiency are critical constraints.

Replacement Considerations

Direct substitutes must match the 12.463 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as jitter and phase noise. Cross-reference with other manufacturers offering similar SMD oscillators.