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Product Detailed Parameters
- Description：2.5x2.0 XO 1.8V 50ppm
- Series：-
- Mfr：QST
- Package：Tape & Reel (TR)
- Base Resonator：-
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- Voltage - Supply：-
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- Current - Supply (Max)：-
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Overview
The QTM252J-2.400MDJ-T is a standard clock oscillator manufactured by TXC Corporation, distributed under the QST brand designation in certain channels. It features a CMOS output and operates at a nominal frequency of 2.4 MHz with a supply voltage of 1.8V. The device provides a frequency stability of ±50ppm and supports an operating temperature range from -40°C to +105°C. It includes enable/disable functionality and draws a maximum supply current of 22mA. The component utilizes a crystal base resonator and is housed in a surface-mount package measuring 2.5mm x 2.0mm.
Feature Summary
- CMOS output interface for digital logic compatibility
- Integrated enable and disable control function
- Low jitter and phase noise performance characteristics
- Surface mount construction for automated assembly
Applications
- General purpose clock signal generation in embedded systems
- Timing reference for microcontrollers and processors
- Communication interface synchronization circuits
- Consumer electronics requiring precise timing references
Procurement Notes
Verify the manufacturer origin carefully, as this part is produced by TXC Corporation but may be listed under QST or other distributor codes. Confirm the specific suffix 'MDJ-T' matches the required 1.8V supply and ±50ppm stability specifications. Ensure the order quantity aligns with the standard reel packaging requirements typically associated with this series. Cross-reference the datasheet version to confirm the active status and environmental compliance details before finalizing procurement.
Selection Notes
Select this component when a low-voltage 1.8V CMOS oscillator is required for compact designs. The ±50ppm stability suits applications tolerant of moderate frequency drift over temperature. Consider the 2.5x2.0mm footprint for space-constrained PCB layouts. Verify that the enable/disable pin requirement fits the system power management strategy. Compare against the QTM252E series if lower EMI emissions are critical for sensitive analog sections.
Part Context
This oscillator belongs to the QTM252 family of quartz ceramic oscillators designed for high-volume consumer and industrial applications. The J-series variant specifically targets 1.8V operation, distinguishing it from the E-series which often supports 2.5V or 3.3V. These components are widely used in portable devices where power efficiency and small form factor are prioritized alongside reliable timing performance.
Replacement Considerations
Direct substitutes include other QTM252J variants with different frequencies such as QTM252J-26.000MDJ-T or QTM252J-48.000MDJ-T if frequency adjustment is acceptable. For voltage differences, the QTM252E series offers similar footprints but may require level shifting or voltage rail adjustments.
