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FST3125MTCX Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
FST3125MTCXFAI2158Yes

FST3125MTCX** is a high-performance, low-power dual supply translating bus switch manufactured by **FAI (Fairchild Semiconductor, now part of ON Semiconductor)**.

The FST3125MTCX is a high-performance, low-power dual supply translating bus switch manufactured by FAI (Fairchild Semiconductor, now part of ON Semiconductor).

Key Specifications:

  • Type: Dual Supply Bus Switch
  • Voltage Range (VCCB): 1.2V to 3.6V
  • Voltage Range (VCCA): 1.65V to 5.5V
  • On-State Resistance (RON): 5Ω (typical)
  • Bandwidth: Up to 200MHz
  • Package: TSSOP-14
  • Operating Temperature: -40°C to +85°C
  • Low Power Consumption: ICC < 1µA (standby)

Descriptions & Features:

  • Bidirectional voltage translation between different logic levels (e.g., 1.8V ↔ 3.3V).
  • Supports hot insertion with power-off protection.
  • Break-before-make switching to prevent signal contention.
  • 5V-tolerant inputs when powered down.
  • ESD Protection: > 8kV (HBM)
  • Fast switching speed with minimal propagation delay.
  • Automotive and industrial-grade variants available.

This device is commonly used in mixed-voltage systems, portable electronics, and communication interfaces where seamless level shifting is required.

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