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Product Detailed Parameters
- Description：6.772 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：6.772 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 18QHTF21-6.772-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 6.772 MHz and utilizes LVCMOS output logic levels. The device requires a 1.8V supply voltage and features an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package suitable for surface-mount assembly. The component supports an operating temperature range from -40°C to 85°C and maintains a frequency stability of ±50ppm.
Feature Summary
- LVCMOS output interface
- Enable/Disable control functionality
- Compact 4-SMD no lead package
Applications
- General electronic timing circuits
- Industrial equipment clock sources
- Consumer electronics systems
Procurement Notes
Verify the specific frequency suffix matches the required system clock speed. Confirm that the 1.8V supply voltage aligns with the target circuit design. Ensure the LVCMOS output compatibility is validated against the receiving logic inputs. Check the operating temperature range requirements for the intended deployment environment.
Selection Notes
Select this component when a low-voltage 1.8V operation is required alongside precise timing needs. The enable/disable feature allows for efficient power management in battery-operated devices. Consider the ±50ppm stability specification for applications requiring moderate frequency accuracy without active temperature compensation.
Part Context
This part belongs to the Mercury Electronic 18QHTF series of surface-mount oscillators. The manufacturer specializes in quartz-based frequency control products including crystals and filters. This specific model represents a standard XO variant designed for general-purpose timing applications in modern electronic assemblies.
Replacement Considerations
Direct substitutes must match the 6.772 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package dimensions. Verify pinout compatibility before swapping. Cross-reference with other manufacturers offering equivalent SMD oscillators if availability is constrained.
