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Product Detailed Parameters
- Description：1.04857 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：1.04857 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)：21mA
- 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 18QHTF21-1.04857-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 1.04857 MHz and utilizes LVCMOS output logic levels. The device requires a 1.8V supply voltage and features an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications.
Feature Summary
- LVCMOS output logic compatibility
- Integrated enable/disable control functionality
- Compact 4-SMD no-lead surface mount package
Applications
- LVCMOS system clock generation
- Embedded digital circuit timing
- Portable electronic devices requiring low power
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your design specifications before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD footprint matches your PCB layout constraints. Check the datasheet for operating temperature range limitations to guarantee reliability in your intended environment.
Selection Notes
Select this component when a precise 1.04857 MHz reference is required for LVCMOS interfaces. The enable pin allows for dynamic power saving in battery-operated systems. Consider the small form factor for space-constrained designs. Verify that the manufacturing source is Mercury Electronic Ind. Co. Ltd to ensure authenticity and performance consistency.
Part Context
This part belongs to the 18QHTF21 series of standard oscillators from Mercury Electronics. The series offers various frequencies with consistent LVCMOS outputs and 1.8V operation. The manufacturer is a pioneer in quartz crystal production in Taiwan with decades of industry experience, ensuring established quality standards for frequency control products.
Replacement Considerations
Compatible substitutes include other 1.04857 MHz LVCMOS oscillators in 4-SMD packages with 1.8V supplies. Ensure equivalent frequency stability and enable pin functionality. Cross-reference pinouts carefully as package variations may exist among different manufacturers.
