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Product Detailed Parameters
- Description：81.73 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：81.73 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)：26mA
- 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 18QHTF21-81.730-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 81.73 MHz and utilizes LVCMOS output logic. The device is designed for 1.8V supply voltage operation and features an enable/disable control function. It is housed in a compact 4-SMD, no lead package, suitable for surface-mount applications requiring precise clock signals.
Feature Summary
- LVCMOS output logic for digital interface compatibility
- Enable/disable control functionality for power management
- Compact 4-SMD no lead surface mount package design
Applications
- General purpose clock signal generation
- Digital system timing references
- Embedded controller clock sources
Procurement Notes
Verify the specific ordering suffix against official Mercury Electronics documentation to confirm the enable/disable feature and voltage level. Ensure the part number matches the required 81.73 MHz frequency and LVCMOS output type. Cross-reference the package dimensions with the mechanical drawing to confirm fitment within the target PCB layout constraints.
Selection Notes
Select this component when a low-voltage 1.8V clock source with active control capabilities is required. The LVCMOS output ensures compatibility with standard digital logic families. Consider the no-lead SMD package for automated assembly processes and reduced profile height requirements in space-constrained designs.
Part Context
This model belongs to the Mercury Electronics XO series, which provides quartz-based frequency control solutions. The company has extensive experience in manufacturing quartz crystals and oscillators since 1973. This specific part represents a standard clock oscillator variant optimized for modern low-power digital applications.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify electrical parameters such as frequency stability, load capacitance, and drive level before considering alternative manufacturers or pin-compatible alternatives.
