SN74HC245ANSR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC245ANSR is an octal bus transceiver with three-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and supports asynchronous bidirectional data communication between buses. The device features high-current outputs capable of driving up to 15 LSTTL loads, low power consumption with a maximum ICC of 80 μA, and typical propagation delay of 12 ns. It utilizes a 20-pin SOIC package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides asynchronous two-way communication between data buses via direction control (DIR) and output enable (OE) inputs.
• Features high-current three-state outputs designed to drive bus lines directly or support multiple LSTTL loads.
• Operates across a wide voltage range from 2 V to 6 V with slow edge rates to minimize output ringing.

Buffers, Drivers, Receivers, Transceivers Applications

• Servers
• PCs and Notebooks
• Network Switches
• Wearable Health and Fitness Devices
• Telecom Infrastructures

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'ANSR' against the manufacturer's current orderable addendum to confirm package type, lead finish, and moisture sensitivity level. Ensure the component status is listed as active production rather than obsolete or preproduction before finalizing procurement plans.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring low-drive CMOS technology where minimizing overshoot and undershoot on outputs is critical. Consider its suitability for bus interface designs where external timing requirements must be minimized through integrated control functions.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4HC245 family of octal bus transceivers. It shares functional characteristics with other variants in the series but differs in physical packaging and manufacturing revisions. The datasheet covers both SN54HC245 and SN74HC245 specifications, with the latter designated for commercial temperature ranges.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74HC245DWR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the Output Enable (OE) input affect the device operation?

When OE is high, the device enters an isolation state, effectively disabling the outputs and isolating the buses. When OE is low, data transmission occurs based on the DIR input level.

What is the recommended handling procedure for unused inputs?

All unused inputs must be connected to either VCC or GND to prevent undefined operational states caused by floating voltages. Outputs may float if the transceiver has an enabled output disable pin.