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Product Detailed Parameters
- Description：68.0 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：68 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 18QHTF21-68.000-OE is a standard quartz crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 68.0 MHz and utilizes LVCMOS output logic compatible with standard digital interfaces. The device functions on a 3.3V supply voltage and features an integrated enable/disable control pin for power management flexibility. Housed in a compact 4-SMD, no-lead package with dimensions of 2.0 x 1.6 mm, it is designed for surface-mount assembly processes. This component provides stable clock signals for high-performance electronic applications requiring precise timing synchronization.
Feature Summary
- LVCMOS output logic ensures compatibility with standard digital circuits
- Integrated enable/disable functionality allows for active power management
- Compact 4-SMD no-lead package facilitates automated surface-mount assembly
Applications
- High-performance digital systems requiring precise clock synchronization
- Embedded devices utilizing LVCMOS-compatible interfaces
- Portable electronics benefiting from low-profile surface-mount packaging
Procurement Notes
Verify the specific ordering suffix against official manufacturer documentation to confirm exact electrical parameters and package variations. Ensure that the requested part number matches the required frequency and voltage specifications for your design. Cross-reference the datasheet for any recent updates regarding RoHS compliance or lead-free status before finalizing procurement orders.
Selection Notes
Select this component when a 68.0 MHz clock signal with LVCMOS outputs is required within a 3.3V system environment. Consider the 2.0 x 1.6 mm footprint constraints during PCB layout planning. Evaluate the enable/disable feature necessity for power-sensitive designs compared to continuously running oscillators.
Part Context
Mercury Electronic Ind. Co., Ltd. has over fifty years of experience manufacturing frequency control products, including quartz crystals and oscillators. As a pioneer in Taiwan's crystal industry, the company produces various timing solutions such as TCXOs and VCTCXOs. The 18QHTF21 series represents their standard XO offerings designed for general-purpose timing applications.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with alternative components based on matching frequency, voltage, package type, and output logic specifications.
