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Product Detailed Parameters
- Description：1.064 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：1.064 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 18QHTF21-1.064-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 1.064 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, functioning at a supply voltage of 1.8V. It features an active enable/disable control pin to manage power consumption during idle periods. The component is housed in a compact 4-SMD, no-lead package with dimensions of 2.0x1.6 mm, suitable for surface-mount assembly on printed circuit boards.
Feature Summary
- LVCMOS output interface for digital logic compatibility
- Active high/low enable control functionality
- Compact 2.0x1.6 mm surface-mount footprint
Applications
- Low-speed clock generation for microcontrollers
- Real-time clock circuits requiring precise timing
- Embedded systems with strict size constraints
Procurement Notes
Verify the specific suffix OE against the manufacturer's current datasheet to confirm the enable pin polarity and output drive strength. Ensure the 1.8V supply rail stability meets the oscillator's noise immunity requirements before integration into the design.
Selection Notes
Select this component when a 1.064 MHz reference is required for legacy or specific communication standards. Consider the 1.8V operating voltage and small form factor as primary drivers. Confirm that the LVCMOS output swing matches the input thresholds of the receiving logic gate.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronic, which offers various frequencies within a standardized 2.0x1.6 mm package. The series provides options for different supply voltages and output types, allowing designers to maintain consistent board layouts across different frequency requirements.
Replacement Considerations
Direct substitutes include other 1.064 MHz oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical specifications before swapping. Cross-reference with similar models like the 18QHTF21-1.152-OE only if frequency tolerance allows.
