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Product Detailed Parameters
- Description：108.1275 MHz XO 1.8V 2.0X1.6 OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：108.1275 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)：28mA
- 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 18QHTF21-108.1275-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 108.1275 MHz and utilizes LVCMOS output logic. 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 2.0mm x 1.6mm. This component is designed for applications requiring precise clock signals in low-voltage digital systems.
Feature Summary
- Provides stable 108.1275 MHz clock signal generation
- Integrates enable/disable functionality for power control
- Utilizes LVCMOS output logic levels
- Features a compact surface-mount package design
Applications
- Digital communication systems requiring precise timing
- Embedded processors and microcontrollers
- Data acquisition equipment
- Consumer electronics with low-power requirements
Procurement Notes
Verify the specific suffix 'OE' against official Mercury Electronics documentation to confirm exact electrical tolerances and pinout configuration. Ensure the 1.8V supply requirement aligns with target circuit design. Confirm package dimensions match PCB footprint specifications before integration. Cross-reference datasheet revisions for any updates to operating temperature ranges or load capacitance values.
Selection Notes
Select this component when a fixed 108.1275 MHz frequency is required with LVCMOS compatibility. Consider the 1.8V operating voltage for low-power system architectures. Evaluate the 4-SMD package size for space-constrained layouts. Compare enable/disable features against alternative oscillators lacking control pins. Verify temperature stability requirements against standard XO specifications.
Part Context
This part belongs to the Mercury Electronic 18QHTF21 series of standard crystal oscillators. The series offers various frequencies and voltage options within a consistent small form factor. Mercury Electronic specializes in quartz crystals and frequency control products, leveraging decades of manufacturing expertise. The 18QHTF21 series targets high-volume consumer and industrial applications requiring reliable clock sources.
Replacement Considerations
Direct substitutes include other 108.1275 MHz LVCMOS oscillators in 2.0x1.6mm packages from compatible manufacturers. Verify voltage tolerance and enable pin functionality matches. Check if alternative parts require different load capacitance configurations. Ensure thermal performance meets application constraints.
