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Product Detailed Parameters
- Description：66.6667 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：66.6667 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 18QHTF21-66.6667-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 66.6667 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes enable/disable control capabilities. It is housed in a compact 4-SMD package without lead, designed for surface-mount applications.
Feature Summary
- Standard crystal oscillator configuration
- LVCMOS output logic interface
- Integrated enable and disable functionality
- Lead-free surface-mount construction
Applications
- General-purpose clock signal generation
- Digital circuit timing references
- Embedded system clock sources
- Communication equipment timing modules
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Confirm that the 1.8V supply voltage aligns with the target system design. Ensure the 4-SMD footprint matches the PCB layout specifications to guarantee proper mechanical and electrical integration during assembly.
Selection Notes
Select this component when a precise 66.6667 MHz reference is required for low-voltage digital systems. The LVCMOS output ensures compatibility with standard logic families operating at 1.8V. Consider the enable/disable feature if power management or clock gating is necessary within the application architecture.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The manufacturer has extensive experience in producing crystals, oscillators, and filters. This specific model represents a standard XO variant optimized for modern surface-mount electronics requiring stable timing signals.
Replacement Considerations
Direct substitutes include other 18QHTF21 variants with identical pinouts but different frequencies, such as 18QHTF21-67.563-OE or 18QHTF21-21.200-OE. Cross-referencing with other manufacturers requires matching the 4-SMD package, 1.8V supply, and LVCMOS output type.
