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Product Detailed Parameters
- Description：66.673333 M XO 1.8V 2.0X1.6MM OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：66.673333 MHz
- Function：Enable/Disable
- Output：LVCMOS
- Voltage - Supply：1.8V
- Frequency Stability：±50ppm
- Absolute Pull Range (APR)：-
- Operating Temperature：-40°C ~ 85°C
- Spread Spectrum Bandwidth：-
- Current - Supply (Max)：26mA
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：4-SMD, No Lead
- Size / Dimension：0.079" L x 0.063" W (2.00mm x 1.60mm)
- Height - Seated (Max)：0.031" (0.80mm)
- Supplier Device Package：-
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Overview
The 18QHTF21-66.673333-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 66.673333 MHz and utilizes LVCMOS output logic levels. The device functions with a supply voltage of 1.8V and includes an enable/disable control pin for power management. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount assembly on printed circuit boards.
Feature Summary
- LVCMOS output interface for digital compatibility
- Integrated enable/disable functionality
- Compact 4-SMD no-lead surface mount package
Applications
- Digital signal processing systems
- Communication equipment clocking
- Embedded controller timing references
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions specified in the official datasheet to prevent soldering defects.
Selection Notes
Select this component when a precise 66.673333 MHz reference is required for LVCMOS-compatible digital circuits. Consider the low operating voltage of 1.8V for energy-efficient designs. The enable pin allows for dynamic power saving in battery-operated applications. Verify environmental specifications if the application involves extreme temperatures.
Part Context
This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz frequency control products. The manufacturer has decades of experience in Taiwan's crystal industry. This specific model represents a standard XO variant within their portfolio, offering reliable timing solutions for modern electronic devices requiring stable clock signals.
Replacement Considerations
Direct substitutes include other 66.673333 MHz LVCMOS oscillators in 4-SMD packages from compatible manufacturers. Ensure electrical parameters such as voltage, current consumption, and pinout match exactly. Cross-reference part numbers like 18QHTF21 variants with different frequencies only if the clock requirement changes.
