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Product Detailed Parameters
- Description：75.63 MHz XO 1.8V 2.0X1.6 MM PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：75.63 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 18QHTF21-75.630-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 75.63 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and features 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 logic for digital interface compatibility
- Integrated enable/disable control functionality
- Compact 4-SMD no-lead surface mount package
Applications
- General purpose clock signal generation
- Digital circuit timing references
- Embedded system clock sources
Procurement Notes
Verify the specific ordering suffix to confirm the enable/disable control feature versus standby power-down variants. Ensure the supply voltage requirement matches the 1.8V specification. Confirm the package type is 4-SMD No Lead. Cross-reference the frequency tolerance and operating temperature range with the official datasheet before integration into the design.
Selection Notes
Select this component when a 75.63 MHz clock source with LVCMOS outputs is required. The 1.8V supply voltage makes it suitable for low-power digital systems. The enable/disable pin allows for power management during idle states. Compare against other Mercury series oscillators to ensure the package size and control features align with the board layout and power constraints.
Part Context
This part belongs to the Mercury Electronics XO series, which includes various frequencies and supply voltages. The 18QHTF21 prefix indicates a specific form factor and electrical characteristic set within the manufacturer's catalog. It is distinct from higher voltage variants like the 2.5V models or differential output types.
Replacement Considerations
Direct substitutes must match the 75.63 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify that any replacement component supports the same enable/disable control mechanism. Check pinout compatibility and thermal specifications to ensure seamless integration without redesign.
