18QHTF21-64.99584-OE

Overview

The 18QHTF21-64.99584-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a nominal frequency of 64.99584 MHz with an LVCMOS output logic level. The device functions on a single 1.8V supply voltage and features enable/disable control capabilities. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The component supports surface mount mounting types and is designed for applications requiring precise timing signals within a specified operating temperature range.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes enable/disable functionality for power management
• Compact 4-SMD no-lead surface mount package design

Applications

• General purpose digital timing circuits
• Embedded systems requiring stable clock sources
• Consumer electronics with low voltage requirements

Procurement Notes

Verify the exact frequency tolerance and operating temperature range specifications 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 layout design to avoid assembly issues. Check for any specific handling requirements related to the no-lead package type during manufacturing.

Selection Notes

Select this component when a low-profile, 1.8V compatible oscillator is required for space-constrained designs. The LVCMOS output simplifies interfacing with standard digital logic families. Consider the enable pin feature if dynamic power saving is necessary. Verify that the 64.99584 MHz frequency meets the system clock requirements without additional dividers or multipliers.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on small form factor crystal oscillators. The series typically offers various frequencies and supply voltages. The '-OE' suffix likely denotes a specific output configuration or packaging variant within the manufacturer's lineup. Mercury Electronics specializes in quartz-based timing components, providing alternatives to larger through-hole or standard SMD packages.

Replacement Considerations

Direct substitutes must match the 64.99584 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package size. Cross-reference with other manufacturers offering similar ultra-small XO devices. Ensure electrical characteristics such as current consumption and stability are comparable. Verify pinout compatibility if the replacement has different enable/disable pin assignments.