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Product Detailed Parameters
- Description：83.6658 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：83.6658 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 18QHTF21-83.6658-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 83.6658 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.
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
- Digital system timing reference
- Embedded controller clock sources
Procurement Notes
Verify the exact frequency specification against the datasheet, as similar part numbers may differ slightly in decimal precision. Confirm the operating temperature range and load capacitance requirements match the target circuit design. Ensure the 1.8V supply voltage aligns with the system power rails before integration.
Selection Notes
Select this component when a low-voltage 1.8V LVCMOS oscillator is required for space-constrained designs. The 4-SMD no-lead package facilitates automated assembly. Consider the specific frequency tolerance and stability requirements to ensure compatibility with the connected digital logic families.
Part Context
This model belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized small outline package. The series provides consistent electrical characteristics across different frequency options, allowing designers to maintain uniform board layouts while adjusting timing parameters.
Replacement Considerations
Direct substitutes must match the 83.6658 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead footprint. Verify pinout compatibility and thermal specifications. Cross-reference with other manufacturers offering equivalent low-profile oscillators if availability is constrained.
