SNJ54ACT245FK

Overview

The SNJ54ACT245FK is an octal bus transceiver with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5V to 5.5V and supports bidirectional data transfer between two 8-bit buses. The device features TTL-compatible inputs and a maximum propagation delay of 8ns at 5V. It utilizes a 20-pin LCCC package and is rated for an operating temperature range from -55°C to 125°C.

Feature Summary

• Provides asynchronous two-way communication between data buses
• Minimizes external timing requirements through control-function implementation
• Features low-drive CMOS technology to minimize output ringing

Applications

• Pro Audio
• Video and Signage
• Appliances
• Factory Automation and Control

Procurement Notes

Verify the specific ordering suffix FK corresponds to the LCCC package configuration. Confirm that the NRND status aligns with long-term availability requirements for the design. Ensure the military-grade qualification matches the intended environmental specifications.

Selection Notes

Select this component when high-temperature operation up to 125°C is required. The ACT series offers faster switching speeds compared to standard HC or HCT logic families. Verify that the 24mA drive current meets the load requirements for the connected bus lines.

Part Context

This part belongs to the SN54ACT245 family, which includes various package options such as CDIP, CFP, SSOP, SOIC, PDIP, TSSOP, and VQFN. The 'SNJ' prefix indicates a military-grade device, while the 'FK' suffix specifically denotes the ceramic LCCC package variant.

Replacement Considerations

SNJ54ACT245W (CFP package)

FAQ

How does the OE pin function affect data flow?

When OE is low, data flows based on the DIR input level. When OE is high, the device enters isolation mode, effectively disconnecting the buses.

What is the input voltage tolerance?

Inputs accept voltages up to 5.5V, making them compatible with 5V logic systems even if the supply voltage varies slightly.