18QHTF21-62.234-PD

Overview

The 18QHTF21-62.234-PD is a 62.234 MHz crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a supply voltage of 3.3V and utilizes LVCMOS output logic. The device features a Standby (Power Down) control function for power management. It is housed in a compact 4-SMD, No Lead surface-mount package with dimensions of 2.00mm x 1.60mm.

Feature Summary

• Supports LVCMOS output interface
• Includes Standby (Power Down) functionality
• Compact 4-SMD No Lead package design

Applications

• General timing applications requiring 62.234 MHz reference
• Embedded systems utilizing 3.3V logic levels
• Portable electronics benefiting from low-profile SMD packaging

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Confirm that the 3.3V supply voltage aligns with the target system design. Ensure the 4-SMD No Lead footprint matches the PCB layout constraints. Cross-reference the part number suffix to confirm the exact pinout and standby behavior specifications provided by the manufacturer.

Selection Notes

Select this component when a precise 62.234 MHz clock signal is required for 3.3V digital circuits. The choice is driven by the need for a standard LVCMOS output compatible with common microcontrollers or FPGAs. Consider the physical size constraints due to the small 2.0x1.6mm package. The standby feature offers an advantage for battery-powered designs requiring power optimization during idle states.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronic. The series typically offers various frequencies and voltage options within a consistent small form factor. This specific model provides a 3.3V operating voltage, distinguishing it from lower-voltage variants like the 1.8V versions found in the same product line.

Replacement Considerations

Direct substitutes must match the 62.234 MHz frequency, 3.3V supply, LVCMOS output, and 4-SMD package. Verify compatibility with any existing standby control circuitry. Check if alternative manufacturers offer equivalent timing specifications and thermal performance.