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Product Detailed Parameters
- Description：12.568343 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：12.568343 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)：22mA
- 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 18QHTF21-12.568343-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 12.568343 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features an enable/disable control function via the OE suffix. It is housed in a compact 4-SMD, No Lead package suitable for surface-mount applications.
Feature Summary
- Supports Enable/Disable control functionality
- Utilizes LVCMOS output logic levels
- Designed for low-voltage 1.8V operation
Applications
- Digital signal processing systems
- Communication equipment clocking
- Microcontroller timing sources
Procurement Notes
Verify that the specific part number includes the OE suffix to confirm the presence of the enable/disable pin functionality. Ensure the required operating temperature range and load capacitance specifications align with the target circuit design before procurement. Cross-reference the manufacturer's latest datasheet for any updates on mechanical dimensions or electrical tolerances.
Selection Notes
Select this component when a precise 12.568343 MHz clock source is required with power management capabilities. The 1.8V supply requirement makes it suitable for modern low-power digital circuits. Consider the 4-SMD package size for PCB space constraints and ensure compatibility with LVCMOS input thresholds of downstream components.
Part Context
This oscillator belongs to the Mercury 18QHTF21 series, which provides standard frequency generation solutions. The series offers various frequency options within a consistent small form factor. The specific model targets applications requiring stable timing references with integrated power control features for energy efficiency.
Replacement Considerations
Direct substitutes include other 12.568343 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation and enable pins. Verify equivalent frequency stability, phase noise, and drive strength specifications. Ensure the replacement component matches the pinout configuration for the enable function to maintain circuit functionality.
