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Product Detailed Parameters
- Description：49.3811 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：49.3811 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 18QHTF21-49.3811-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 49.3811 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes enable/disable control capabilities. It is housed in a compact 4-SMD, No Lead package with dimensions of 7.0mm x 5.0mm. The component is designed for surface-mount applications and supports an operating temperature range typical for commercial grade devices.
Feature Summary
- Supports LVCMOS output logic for digital interface compatibility
- Features enable/disable functionality for power management
- Utilizes a small form factor 4-SMD no lead package
Applications
- General purpose clock signal generation
- Embedded system timing references
- Consumer electronics circuit boards
Procurement Notes
Verify the specific ordering suffix OE against the manufacturer's current documentation to ensure correct packaging and revision status. Confirm that the 1.8V supply requirement aligns with the target system design before procurement. Check for RoHS compliance declarations if environmental regulations apply to the end product.
Selection Notes
Select this component when a precise 49.3811 MHz clock source is required for low-voltage digital circuits. Consider the 1.8V operating voltage and LVCMOS output levels to ensure compatibility with downstream logic gates. Evaluate the 4-SMD package size constraints against available PCB real estate during the layout phase.
Part Context
This part belongs to the 18QHTF21 series of standard oscillators from Mercury Electronics. The series offers various frequencies within a consistent 7.0x5.0mm footprint. The manufacturer specializes in quartz crystal products, providing frequency control solutions for industrial and consumer markets.
Replacement Considerations
Direct substitutes include other 49.3811 MHz LVCMOS oscillators in 4-SMD packages from manufacturers such as Epson or SiTime. Ensure voltage levels and pinout configurations match before swapping components.
