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Product Detailed Parameters
- Description：49.5067 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：49.5067 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 18QHTF21-49.5067-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 49.5067 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and features enable/disable functionality for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The component supports a maximum supply current of 24mA and offers frequency stability of ±50ppm.
Feature Summary
- LVCMOS output interface
- Enable/Disable control function
- Compact 4-SMD No Lead package
Applications
- General purpose timing circuits
- Embedded systems clock sources
- Consumer electronics timing references
Procurement Notes
Verify the specific frequency tolerance and operating temperature range against the official datasheet before procurement. Ensure the 1.8V supply voltage requirement aligns with the target system design. Confirm that the 4-SMD No Lead package footprint matches the PCB layout specifications to avoid assembly issues.
Selection Notes
Select this component when a low-voltage 1.8V operation is required alongside precise timing needs. The enable/disable feature makes it suitable for battery-powered applications requiring power conservation. Consider the ±50ppm stability limit for applications sensitive to frequency drift over temperature variations.
Part Context
This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series typically includes various frequencies and voltage options, all sharing the same small form factor. This specific model targets applications needing a 49.5067 MHz reference signal with standard commercial performance levels.
Replacement Considerations
Direct replacements must match the 49.5067 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify pinout compatibility and thermal characteristics. Cross-reference with other manufacturers offering similar XO components in the 2.0x1.6mm footprint.
