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Product Detailed Parameters
- Description：49.3533 MHz XO 1.8V 2.0X1.6MM OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：49.3533 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 18QHTF21-49.3533-OE is a quartz crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a standard frequency of 49.3533 MHz with LVCMOS output logic. The device supports a supply voltage range of 1.8V to 3.3V and features an enable/disable control pin. It is housed in a compact 4-SMD, no lead package measuring 1.6mm x 1.2mm x 0.5mm. The unit functions within a temperature range of -40°C to +85°C and offers frequency stability of ±50 ppm over the operating range.
Feature Summary
- LVCMOS output logic compatible with standard digital interfaces
- Integrated enable/disable control for power management
- Compact surface-mount design suitable for space-constrained PCB layouts
Applications
- High-performance data communication systems
- Portable electronic devices requiring low power consumption
- Embedded systems needing precise clock timing
Procurement Notes
Verify the specific suffix 'OE' indicates the enable/disable function as per official datasheets. Confirm supply voltage requirements match the target circuit design. Ensure thermal management aligns with the specified operating temperature range. Check for RoHS compliance status if required by project regulations.
Selection Notes
Select this component when a small form factor oscillator is needed for 49.3533 MHz applications. Consider the LVCMOS output compatibility with downstream logic families. Evaluate the enable/disable feature necessity for system power efficiency. Compare package dimensions against available board space constraints.
Part Context
This part belongs to Mercury's 18QHTF series of surface-mount crystal oscillators. The series provides stable clock signals for various digital applications. Mercury Electronics specializes in frequency control products including crystals and oscillators. The 18QHTF series is designed for high reliability and performance.
Replacement Considerations
Direct substitutes include other 49.3533 MHz LVCMOS oscillators in 4-SMD packages from manufacturers like Epson or NDK. Verify electrical parameters such as load current and output swing before substitution.
