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Product Detailed Parameters
- Description：73.6363 MHz XO 1.8V 2.0X1.6MM PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：73.6363 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)：26mA
- 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 18QHTF21-73.6363-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 73.6363 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and includes a standby or power-down function to manage power consumption. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm.
Feature Summary
- Supports low-voltage operation at 1.8V
- Integrates standby and power-down functionality
- Provides LVCMOS signal output
Applications
- Digital signal processing systems
- Communication equipment requiring precise timing
- Embedded control circuits
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail is stable and within the operational limits specified in the official datasheet. Ensure the PCB footprint matches the 4-SMD No Lead package dimensions to guarantee proper soldering and electrical connection during assembly.
Selection Notes
Select this component when a 73.6363 MHz clock source is required for LVCMOS-compatible digital interfaces. Consider the 1.8V operating voltage constraint and the availability of the power-down feature for energy-sensitive applications. Evaluate the physical space constraints, as the 2.0x1.6mm package is suitable for high-density board layouts compared to larger oscillator packages.
Part Context
This part belongs to the Mercury Electronics XO series, which offers various frequencies and voltage options. The 'PD' suffix indicates the inclusion of a power-down pin or function, distinguishing it from continuous-operation variants. The 18QHTF21 series represents a line of surface-mount oscillators designed for reliability in consumer and industrial electronics.
Replacement Considerations
Direct substitutes must match the 73.6363 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify pinout compatibility and thermal characteristics. Cross-reference with other manufacturers offering similar small-form-factor oscillators if Mercury Electronics stock is unavailable.
