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Product Detailed Parameters
- Description：8.0 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：8 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 18QHTF21-8.000-OE is a 8.0 MHz crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a supply voltage of 1.8V and utilizes an LVCMOS output interface. The component features an Enable/Disable control function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. This standard frequency generator is designed for surface-mount assembly in electronic circuits requiring precise timing signals.
Feature Summary
- Provides stable 8.0 MHz frequency generation via LVCMOS output
- Includes hardware enable/disable functionality for system power control
- Designed for low-voltage 1.8V operation
- Utilizes a compact 2.0x1.6 mm surface-mount package
Applications
- Embedded systems requiring precise clock sources
- Consumer electronics with space constraints
- Industrial control modules
- Communication equipment timing circuits
Procurement Notes
Verify the specific part number suffix against official Mercury Electronics documentation to ensure correct voltage and package specifications. Confirm that the LVCMOS output type matches the target circuit requirements. Check for RoHS compliance status if environmental regulations apply to the manufacturing process. Ensure the 1.8V supply rail is compatible with the design before procurement.
Selection Notes
Select this component when a low-profile 2.0x1.6 mm footprint is required for 8.0 MHz applications. The 1.8V operating voltage makes it suitable for battery-powered or low-power digital logic families. The enable pin allows for dynamic power management. Verify that the load capacitance requirements of the host system align with the oscillator's specifications to maintain frequency accuracy.
Part Context
This model belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequency options within the same physical package. The series typically supports LVCMOS outputs and includes enable functions. The 8.0 MHz variant provides a specific timing solution for microcontrollers and memory interfaces where this exact frequency is necessary for system synchronization.
Replacement Considerations
Direct replacements must match the 1.8V LVCMOS specification and 2.0x1.6 mm package. Cross-reference with other Mercury 18QHTF21 variants only if the frequency requirement changes. Ensure substitute components support the same enable/disable control logic. Verify pin compatibility and electrical characteristics before integration.
