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Product Detailed Parameters
- Description：50.211 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：50.211 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)：24mA
- 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 18QHTF21-50.211-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 50.211 MHz and utilizes LVCMOS output logic levels. The device supports an enable/disable control function via a supply voltage of 3.3V. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm, designed for surface-mount applications requiring precise clock signals.
Feature Summary
- Supports active enable and disable control functionality
- Delivers LVCMOS output signal compatibility
- Utilizes a compact 2.0x1.6 mm surface-mount footprint
Applications
- Digital signal processing systems
- Communication equipment clocking
- Embedded system timing references
Procurement Notes
Verify the specific operating voltage requirement against the target circuit design, as this component is specified for 3.3V operation. Confirm that the PCB layout accommodates the 2.0x1.6 mm SMD package dimensions. Ensure the application requires LVCMOS logic levels to guarantee signal integrity and compatibility with downstream components.
Selection Notes
Select this component when a 50.211 MHz reference clock is required within space-constrained designs. The choice is appropriate for systems needing low-power consumption and enable/disable capabilities. Consider the 3.3V supply constraint and LVCMOS interface requirements before finalizing the selection for integration into the mainboard or module.
Part Context
This part belongs to the 18QHTF21 series of standard oscillators from Mercury Electronic. The series offers various frequencies and voltage options in a consistent small form factor. This specific model provides a mid-range frequency solution suitable for general-purpose digital timing applications where size and power efficiency are prioritized over high-stability temperature compensation.
Replacement Considerations
Direct substitutes include other 18QHTF21 series variants with identical pinout and package but different frequencies or voltages, such as 18QHTF21-59.648-OE. Cross-brand replacements must match the 2.0x1.6 mm footprint, 3.3V supply, LVCMOS output, and enable pin configuration.
