FST16245MTD

Overview

The FST16245MTD is a 16-bit bus switch in a 48-lead Thin Shrink Small Outline Package (TSSOP). It provides high-speed CMOS and TTL-compatible switching with minimal propagation delay. The device features two independent 8-bit switches with separate output enable inputs. Operating voltage ranges from 4.0V to 5.5V, supporting input voltages up to 5.5V. On-resistance varies between 4Ω and 20Ω depending on conditions. Quiescent supply current is typically 3µA.

Feature Summary

• Provides 16 bits of high-speed bus switching with minimal propagation delay
• Features low on-resistance to prevent ground bounce noise generation
• Includes zero bounce operation in flow-through mode
• Control inputs are compatible with TTL logic levels

Applications

• High-speed data bus isolation
• Bidirectional voltage translation between different logic domains
• System board signal routing and switching

Procurement Notes

Verify the specific MTD48 package variant matches the required footprint. Confirm that the operating voltage range aligns with the system's power supply rails. Ensure control signals meet the specified TTL level compatibility requirements for reliable switching operation.

Selection Notes

Select this component when designing systems requiring bidirectional data transfer with low insertion loss. Consider the 48-lead TSSOP package constraints for PCB layout. Evaluate the on-resistance specifications against the load capacitance to ensure signal integrity is maintained across the switching path.

Part Context

This device belongs to the Fairchild Switch family, utilizing proven switch technology similar to the FST3384 series. It is designed for applications demanding high performance and low power consumption. The product line focuses on providing efficient signal routing solutions for complex electronic systems.

Replacement Considerations

Check datasheets for equivalent 16-bit bus switches from other manufacturers. Verify pinout compatibility and electrical characteristics such as on-resistance and propagation delay before substitution.

FAQ

How is the switching state controlled?

The switch is enabled when the Output Enable (OE) input is LOW, connecting Port A to Port B. When OE is HIGH, the switch turns off, creating a high impedance state.

What is the maximum operating voltage?

The recommended operating supply voltage (VCC) ranges from 4.0V to 5.5V. Input and output voltages can also range from 0V to 5.5V.