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Product Detailed Parameters
- Description：12.28 MHz XO 1.8V 2.0X1.6 MM OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：12.28 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 18QHTF21-12.280-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 12.28 MHz and utilizes LVCMOS output logic levels. The device requires a supply voltage of 1.8V and includes an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.
Feature Summary
- LVCMOS output logic compatibility
- Integrated enable/disable functionality
- Compact 4-SMD no-lead surface mount package
Applications
- Timing and clock signal generation
- Embedded electronic devices
- Digital system synchronization
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 4-SMD footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during operation.
Selection Notes
Select this component when a precise 12.28 MHz reference is required for low-voltage digital circuits. The integrated enable pin allows for dynamic power control, which is beneficial for battery-operated or energy-efficient applications. Consider the operating temperature range and package dimensions to ensure compatibility with the intended enclosure and environmental conditions.
Part Context
This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequency options within a standardized small outline package format. These components are designed to provide stable clock signals for microcontrollers, memory devices, and communication interfaces requiring precise timing references.
Replacement Considerations
Direct substitutes include other 12.28 MHz LVCMOS oscillators in 4-SMD packages with compatible 1.8V operation and enable pins. Verify electrical parameters such as frequency stability, phase noise, and drive strength to ensure functional equivalence without redesigning the host circuit.
