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Product Detailed Parameters
- Description：13.564025 M XO 1.8V 2.0X1.6MM PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：13.564025 MHz
- Function：Standby (Power Down)
- 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)：22mA
- 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 18QHTF21-13.564025-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 13.564025 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and features a standby mode for power down functionality. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.
Feature Summary
- Supports low-voltage operation with 1.8V supply requirement
- Includes standby capability for power management
- Provides LVCMOS output signal compatibility
Applications
- RFID reader circuits
- Wireless communication modules
- NFC interface systems
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Ensure the 4-SMD no-lead package dimensions align with the PCB footprint specifications. Confirm that the 1.8V operating voltage matches the system power rail to prevent malfunction or damage during integration.
Selection Notes
Select this component when a precise 13.564025 MHz reference is required for RFID or NFC applications. Consider the LVCMOS output swing and 1.8V supply constraints relative to the host processor or transceiver input requirements. Evaluate the thermal performance and stability within the specified operating temperature range for the intended environment.
Part Context
This part belongs to the Mercury Electronics 18QHTF21 series of surface-mount crystal oscillators. The series offers various frequencies optimized for wireless standards. The 'PD' suffix typically indicates a specific pinout or packaging variant within the manufacturer's lineup, ensuring compatibility with automated assembly processes.
Replacement Considerations
Direct substitutes must match the 13.564025 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD package. Verify electrical parameters such as frequency stability and phase noise against the original datasheet to ensure functional equivalence in the application.
