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Product Detailed Parameters
- Description：104.254 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：104.254 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)：28mA
- 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 18QHTF21-104.254-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 104.254 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and includes an Enable/Disable function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. The component supports an operating temperature range of -40°C to 85°C and offers a frequency stability of ±50ppm.
Feature Summary
- LVCMOS output logic for digital interface compatibility
- Integrated enable/disable control functionality
- Compact 4-SMD no-lead surface mount package
Applications
- General purpose clock signal generation
- Embedded system timing references
- Consumer electronics circuit boards
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 SMD package dimensions to avoid assembly issues. Cross-reference the manufacturer datasheet for reflow soldering profile recommendations to maintain component integrity during manufacturing processes.
Selection Notes
Select this component when a low-profile, 1.8V LVCMOS oscillator is required for space-constrained designs. The ±50ppm stability suits applications where moderate precision is acceptable. Consider the enable pin utility for power-sensitive systems requiring dynamic clock control. Evaluate thermal performance within the specified -40°C to 85°C range to ensure reliability under operational conditions.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz frequency control products. The series features various frequencies and packages tailored for modern electronic devices. Mercury Electronics has a long history in Taiwan's crystal industry, providing reliable timing solutions for global markets.
Replacement Considerations
Direct substitutes include other 18QHTF21 series variants with identical pinouts and electrical characteristics but different frequencies, such as 18QHTF21-100.000-OE, if frequency adjustment is permissible. Verify compatibility with existing firmware or hardware dependencies before swapping.
