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Product Detailed Parameters
- Description：11.155 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：11.155 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 18QHTF21-11.155-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 11.155 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes an enable/disable control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 3.2 x 2.5 mm.
Feature Summary
- Standard XO type with LVCMOS output logic
- Integrated enable/disable control functionality
- Compact 4-SMD no-lead surface mount package
Applications
- General clock signal generation
- Digital system timing references
- Embedded circuit synchronization
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system power rails. Ensure the 4-SMD footprint matches your PCB layout constraints. Check for RoHS compliance status if required by your manufacturing standards.
Selection Notes
Select this component when a precise 11.155 MHz reference is needed with low-voltage operation. The LVCMOS interface ensures compatibility with standard digital logic families. The small form factor suits space-constrained designs. Consider thermal performance and stability requirements relative to the operating temperature range specified in the datasheet.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronics, a supplier specializing in quartz crystals and oscillators. The series typically offers various frequencies within a standardized SMD package. Mercury Electronics has a long history in Taiwan's frequency-control industry, providing components for consumer and industrial electronics applications.
Replacement Considerations
Direct substitutes include other 11.155 MHz LVCMOS oscillators in 3.2x2.5mm packages from compatible manufacturers. Verify pinout compatibility and electrical parameters such as current consumption and startup time. Cross-reference with similar Mercury parts like the 25QHTF32 series if size constraints allow.
