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Product Detailed Parameters
- Description：6.144 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：6.144 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 18QHTF21-6.144-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 6.144 MHz and utilizes LVCMOS output logic levels. The device is designed for operation with a supply voltage of 1.8V and includes an enable/disable control function. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.
Feature Summary
- LVCMOS output interface for digital logic compatibility
- Integrated enable/disable control pin functionality
- Compact 4-SMD no-lead surface mount packaging
Applications
- General purpose clock signal generation
- Embedded system timing references
- Consumer electronics circuit boards
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the target application design before procurement. Ensure that the 1.8V supply voltage aligns with the system power rails. Confirm that the enable/disable pin logic levels are compatible with the controlling microcontroller or FPGA outputs to prevent unintended oscillator states during operation.
Selection Notes
Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS output format. The choice is driven by the need for a small footprint via the 4-SMD package and the necessity for software-controllable oscillator activation through the enable pin. Consider thermal and space constraints within the host device layout.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd, a manufacturer specializing in quartz crystals and oscillators. The series typically offers various frequency options within a standardized small outline package. Mercury Electronics is a Taiwan-based supplier with a history in frequency control products, providing components for timing applications across multiple industries.
Replacement Considerations
Direct replacements must match the 1.8V supply, LVCMOS output, 4-SMD no-lead package, and enable/disable feature. Verify frequency accuracy and phase noise specifications if substituting with other manufacturers' parts to ensure signal integrity remains within acceptable limits for the specific application.
