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Product Detailed Parameters
- Description：11.9 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：11.9 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 18QHTF21-11.900-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co. Ltd. It operates at a fixed frequency of 11.9 MHz and utilizes LVCMOS output logic levels. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.
Feature Summary
- Integrates LVCMOS output interface for digital signal compatibility
- Supports active low enable/disable control functionality
- Utilizes a leadless surface-mount package design
Applications
- General clock generation for embedded systems
- Timing reference for microcontroller units
- Data communication interface 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 rail stability meets the oscillator's operational specifications to ensure consistent performance. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions precisely to avoid assembly issues.
Selection Notes
Select this component when a low-voltage 1.8V operation is required alongside a precise 11.9 MHz timing reference. The LVCMOS output is suitable for direct interfacing with standard digital logic families without additional level shifting. Consider the small form factor for space-constrained designs requiring surface-mount integration.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co. Ltd, a supplier specializing in quartz crystals and oscillators. The series typically offers various frequencies within a standardized 2.0x1.6 mm package. The manufacturer has established expertise in frequency control products since 1973.
Replacement Considerations
Direct substitutes include other 11.9 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical parameters such as phase noise and jitter if replacing with components from different manufacturers.
