SN74AHCT245DW

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AHCT245DW 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 features TTL-voltage compatible inputs. The device supports asynchronous two-way communication between data buses, utilizing direction control (DIR) and output enable (OE) pins for signal management. It is housed in a 20-pin SOIC package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• TTL-voltage compatible inputs
• Asynchronous bidirectional data transmission
• Latch-up performance exceeding 250 mA per JESD 17

Buffers, Drivers, Receivers, Transceivers Applications

• Enable or disable digital signals
• Hold signals during controller reset
• Debounce switches

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current Package Option Addendum to confirm status and material specifications. Confirm that the component meets RoHS requirements and lead finish standards required for the intended assembly process. Ensure the operating temperature range aligns with system thermal constraints.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring low drive CMOS technology to minimize output ringing. It is suitable for translating voltages from 3.3 V to 5 V due to lowered input switching levels. Consider its balanced output drive capabilities and slow edge rates when designing bus interfaces where overshoot and undershoot are concerns.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4AHCT245 family of octal bus transceivers. It utilizes advanced CMOS technology designed for high-speed asynchronous communication. The device allows data transmission between A and B buses based on the logic level at the DIR input, providing isolation when OE is asserted.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74AHCT245DWR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle voltage translation?

The SN74AHCT245DW allows up voltage translation from 3.3 V to 5 V because its inputs accept VIH levels of 2 V.

What is the function of the OE pin?

The output-enable (OE) input disables the device, effectively isolating the buses when asserted.