SN74BCT245NS

Buffers, Drivers, Receivers, Transceivers Overview

The SN74BCT245NS is an octal bus transceiver with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a recommended operating temperature of 0°C to 70°C. The device features TTL-compatible input and output levels, with a maximum propagation delay of 7 ns at 5 V. It provides low-level output currents up to 64 mA and high-level output currents up to -15 mA. The component is housed in a 20-pin SOP (NS) package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Enables asynchronous communication between data buses via direction control inputs
• Provides effective bus isolation through the output-enable input
• Features ESD protection exceeding JESD 22 standards

Buffers, Drivers, Receivers, Transceivers Applications

• Driving bus lines
• Buffering memory address registers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'NS' corresponds to the SOP package and tape-and-reel quantity when sourcing. Confirm that the required operating temperature range aligns with the catalog specification of 0°C to 70°C for this variant. Ensure all unused inputs are tied to VCC or GND to maintain proper device operation as per standard guidelines.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring bidirectional data transfer between buses with different logic families. The BCT series offers improved speed over standard 74LS devices while maintaining TTL compatibility. Consider the 20-pin SOP package constraints regarding board space and thermal dissipation requirements during system design.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74BCT245 family of octal bus transceivers. It shares functional similarities with other variants like SN74BCT245N and SN74BCT245DW but differs in physical packaging and manufacturing status. The NS designation specifically identifies the small-outline package configuration available from Texas Instruments.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74BCT245N

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle bus isolation?

The output-enable (OE) input can be used to disable the device, effectively isolating the A and B buses.

What determines the data transmission direction?

The direction-control (DIR) input level determines whether data transmits from the A bus to the B bus or vice versa.