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Product Detailed Parameters
- Description：6.757 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：6.757 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 18QHTF21-6.757-OE is a quartz crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a nominal frequency of 6.757 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and features an enable/disable function for power management. It is housed in a compact 4-SMD, No Lead package suitable for surface mount applications. The component is designed to operate within a temperature range of -40°C to +85°C and offers frequency stability of ±50ppm.
Feature Summary
- Integrated enable/disable control functionality
- LVCMOS output logic compatibility
- Hermetic ceramic leadless SMD construction
Applications
- Embedded system clock generation
- Consumer electronics timing circuits
- Industrial control interface synchronization
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail aligns with the system's power architecture. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications. Check for RoHS compliance documentation if environmental regulations apply to the final assembly.
Selection Notes
Select this model when a low-voltage 1.8V operation is required alongside precise timing accuracy. The enable/disable feature makes it suitable for battery-powered devices requiring power conservation. Consider the ±50ppm stability for general-purpose digital interfaces where high-frequency precision is not critical. The hermetic package ensures reliability in varying environmental conditions compared to standard plastic packages.
Part Context
This part belongs to the QHTF series of quartz crystal oscillators from Mercury Electronic. The series includes various frequencies ranging from 1.0 MHz to 200 MHz across different supply voltages. Mercury Electronic is a pioneer in quartz crystal manufacturing with decades of industry experience. The QHTF line emphasizes hermetic sealing and robust performance for industrial and commercial applications.
Replacement Considerations
Direct substitutes may include other 18QHTF21 variants with different frequencies or supply voltages from Mercury Electronic. Cross-brand replacements require matching LVCMOS logic, 1.8V supply, and 4-SMD package dimensions. Verify pinout compatibility and thermal characteristics before substituting with generic oscillator components.
