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Product Detailed Parameters
- Description：8.432 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：8.432 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 18QHTF21-8.432-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 8.432 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. A key functional characteristic is the inclusion of an enable/disable control pin, allowing for power management in system designs. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.
Feature Summary
- Supports LVCMOS output logic for digital interface compatibility
- Features integrated enable/disable functionality for power control
- Operates with a single 1.8V power supply rail
Applications
- Digital signal processing systems requiring precise timing
- Communication equipment utilizing standard clock frequencies
- Embedded systems with low-power design constraints
Procurement Notes
Verify the specific suffix 'OE' against the manufacturer's current datasheet to confirm availability and exact electrical tolerances. Ensure the 1.8V supply requirement aligns with the target system's voltage domain. Confirm that the LVCMOS output swing is compatible with the receiving logic inputs. Check for any recent revisions to the 4-SMD No Lead package dimensions prior to final PCB layout approval.
Selection Notes
Select this component when a stable 8.432 MHz reference is required for LVCMOS-compatible circuits. The enable feature makes it suitable for battery-operated devices where power conservation is critical. Consider the operating temperature range specified in the official documentation to ensure reliability under environmental stress. Evaluate the footprint requirements of the 4-SMD No Lead package against available board space.
Part Context
Mercury Electronics Ind. Co. Ltd specializes in frequency control products, including quartz crystals and oscillators. This model belongs to their series of surface-mount crystal oscillators designed for consumer and industrial electronics. The company has a long history in Taiwan's quartz industry, focusing on providing reliable timing solutions for various electronic applications.
Replacement Considerations
Direct substitutes include other 8.432 MHz LVCMOS oscillators from Mercury Electronics, such as the 18QHTF21-8.432-PD, provided the package type and pinout are compatible. Verify that alternative sources offer identical enable/disable functionality and voltage specifications before integration.
