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Product Detailed Parameters
- Description：49.38111 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：49.38111 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)：23mA
- 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 18QHTF21-49.38111-OE is a standard clock oscillator manufactured by Mercury Electronics Ind. Co. Ltd, operating at a fixed frequency of 49.38111 MHz. It utilizes LVCMOS output logic and functions with a supply voltage of 1.8V. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. It supports an enable/disable control function for power management. The device is designed for operation within a temperature range of -40°C to 85°C, ensuring reliability in demanding electronic environments.
Feature Summary
- Supports LVCMOS output logic for digital interface compatibility
- Features enable/disable control functionality for power optimization
- Utilizes a compact surface-mount package design
Applications
- General-purpose clock signal generation in digital circuits
- Timing reference sources for embedded systems
- Data communication interfaces requiring precise frequency stability
Procurement Notes
Verify the specific part number against official Mercury Electronics documentation to confirm the exact frequency tolerance and load capacitance specifications. Ensure that the 1.8V supply voltage requirement aligns with the target system's power rails. Confirm the package orientation and pinout configuration matches the PCB footprint design before finalizing procurement orders.
Selection Notes
Select this component when a low-voltage 1.8V operation is required alongside a precise 49.38111 MHz timing reference. Consider the small 2.0x1.6mm footprint for space-constrained designs. Evaluate the need for enable/disable control features to manage power consumption during idle states compared to always-on oscillator alternatives.
Part Context
This oscillator belongs to the Mercury Electronics family of surface-mount crystal oscillators. The company specializes in frequency control products including quartz crystals, TCXOs, and VCTCXOs. This specific model represents a standard output type designed for general timing applications rather than high-performance temperature-compensated requirements.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided source data. Cross-reference with other 49.38111 MHz LVCMOS oscillators only if electrical parameters and pin configurations match exactly.
