FST162861MTDX

Overview

The FST162861MTDX is a bus switch integrated circuit manufactured by Fairchild Semiconductor, now part of onsemi. It provides 20 bits of high-speed CMOS and TTL-compatible bus switching functionality. The device features ten independent 1:1 circuits, allowing for flexible signal routing applications. It operates on a single supply voltage source ranging from 4V to 5.5V. The component is housed in a 48-TSSOP package and is rated for an operating temperature range of -40°C to 85°C.

Feature Summary

• Provides 20 bits of high-speed CMOS and TTL-compatible bus switching
• Features ten independent 1:1 circuits for flexible signal routing
• Low on-resistance allows inputs to be driven from either side

Applications

• Signal routing in high-speed data buses
• System board interconnects requiring low latency switching
• Portable equipment with limited power supply constraints

Procurement Notes

Verify the manufacturer status as Fairchild Semiconductor or onsemi, noting that Fairchild was acquired. Confirm the specific suffix MTDX corresponds to the 48-TSSOP package and tape-and-reel shipping method. Check RoHS compliance documentation for environmental standards. Ensure the part number matches the exact pinout and electrical specifications required for your design, as variations exist within the FST family.

Selection Notes

Select this component when designing systems requiring multiple independent bidirectional switches with low insertion loss. It is suitable for applications needing CMOS and TTL compatibility across a 4V to 5.5V supply range. Consider the 48-TSSOP package size for space-constrained designs. Verify that the thermal performance and current handling capabilities meet the specific load requirements of the target application.

Part Context

This component belongs to the FST (Fairchild Switch Technology) family of bus switches. These devices are designed to replace mechanical relays and discrete transistor switches in modern electronic systems. The FST series is known for its low on-resistance and high speed, making it ideal for high-frequency signal transmission. The FST162861 specifically offers a high channel count in a compact package.

Replacement Considerations

Check for direct replacements within the FST1628xx series from onsemi/Fairchild. Verify pin-to-pin compatibility with other 48-TSSOP bus switches if sourcing from alternative manufacturers. Ensure electrical parameters such as on-resistance and supply voltage ranges match the original design requirements.