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Product Detailed Parameters
- Description：49.46 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：49.46 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 18QHTF21-49.460-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fundamental frequency of 49.46 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and features an enable/disable control pin for power management. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0x1.6 mm. This component is designed for timing applications requiring precise frequency stability within standard operating temperature ranges.
Feature Summary
- Integrates LVCMOS output logic for direct digital interface compatibility
- Includes enable/disable functionality to support power conservation strategies
- Utilizes a surface-mount 4-SMD no-lead package for automated assembly
Applications
- General clock signal generation in embedded systems
- Timing reference for microcontrollers and processors
- 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 voltage aligns with the system power rails. Ensure the PCB footprint matches the 2.0x1.6 mm package dimensions to prevent mounting issues during assembly.
Selection Notes
Select this component when a low-profile surface-mount oscillator is required for space-constrained designs. Consider the LVCMOS output type if the downstream logic does not require differential signaling. Evaluate the enable pin utility if dynamic power management is a critical system requirement.
Part Context
This part belongs to the Mercury Electronics 18QHTF series of standard XO oscillators. The series offers various frequencies and package sizes, providing designers with flexible options for timing solutions. Mercury Electronics specializes in quartz-based frequency control products, including crystals, filters, and oscillators, serving global electronics manufacturing needs.
Replacement Considerations
Direct replacements include other 49.46 MHz LVCMOS oscillators in 2.0x1.6mm packages from compatible manufacturers. Verify pinout compatibility and electrical specifications such as current consumption and start-up time before substitution.
