SN74FB2040RCR

Specialty Logic Overview

The SN74FB2040RCR is an 8-bit TTL/BTL transceiver manufactured by Texas Instruments. It translates signals between TTL and backplane transceiver logic (BTL) environments. The device operates with a supply voltage range of 4 V to 5.5 V and functions within a temperature range of 0°C to 70°C. It features open-collector B-port outputs capable of sinking 100 mA, separate output enables for the B port, and high-impedance states during power-up and power-down. The RC package is a QFP variant.

Specialty Logic Feature Summary

• Translates signals between TTL and backplane transceiver logic (BTL) environments
• Open-collector B-port outputs specified to sink 100 mA
• Provides high-impedance state during power-up and power-down
• Includes BIAS VCC pin to minimize signal distortion during live insertion or withdrawal

Specialty Logic Applications

• Backplane transceiver logic applications
• TTL to BTL signal translation
• Live insertion systems requiring biasing networks

Specialty Logic Procurement Notes

Verify that the specific ordering suffix 'RCR' corresponds to the tube packaging indicated in official documentation, as datasheets may list standard tubes rather than reels. Confirm the operating temperature range matches the application requirements. Ensure all unused inputs are terminated correctly according to specifications to maintain proper device operation.

Specialty Logic Selection Notes

Select this component when interfacing TTL logic with BTL backplane environments. Consider the 100 mA sink capability of the B port for heavy load requirements. Verify compatibility with IEEE Std 1194.1-1991 if JTAG functionality is required, noting that specific pins on this device are nonfunctional for that purpose.

Specialty Logic Part Context

This part belongs to the SN74FB2040 family of 8-bit TTL/BTL transceivers. It is designed specifically for translating data between different logic families used in backplane architectures. The device provides distinct control inputs for managing data flow direction and isolation between the A and B ports.

Specialty Logic Replacement Considerations

SN74FB2040RC