54ABT245/B2A

Overview

The SN54ABT245/B2A is a military-grade octal bus transceiver manufactured by Rochester Electronics. It features three-state outputs and operates within a supply voltage range of 4.5V to 5.5V. The device supports bidirectional data transmission between two buses, controlled by direction and enable inputs. It is designed for asynchronous communication with low power consumption and latchup immunity. The component is housed in a 20-lead ceramic flatpack (CFP) package, suitable for high-reliability applications requiring extended temperature performance.

Feature Summary

• Provides non-inverting octal bus transceiver functionality for asynchronous two-way communication
• Features three-state outputs that drive bus lines directly while isolating the device when disabled
• Includes direction control and enable inputs to manage data flow and bus isolation
• Constructed using radiation-hardened CMOS technology for latchup immunity

Applications

• Military aerospace systems requiring radiation tolerance
• High-reliability industrial data bus interfaces
• Harsh environment electronic equipment
• Secure communication hardware

Procurement Notes

Verify the specific suffix /B2A against the manufacturer's current datasheet to confirm package type and qualification level. Ensure the source document explicitly lists this part number as an active or qualified item from Rochester Electronics. Confirm environmental compliance status if required for your specific application constraints.

Selection Notes

Select this component for designs requiring robust performance in high-radiation environments. The ceramic packaging offers superior durability compared to plastic alternatives. Verify that the 4.5V to 5.5V supply range aligns with your system power architecture. Consider the thermal characteristics of the CFP package for your enclosure design.

Part Context

This part belongs to the SN54ABT series of bus transceivers, which are designed for high-speed digital applications. The '54' prefix indicates military grade specifications, including wider temperature ranges and stricter testing protocols than commercial variants. Rochester Electronics provides these components often as lifecycle management solutions for legacy or specialized military parts.

Replacement Considerations

Public confirmed substitute part numbers: None identified in available documentation.