SN74LVC245ANSR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVC245ANSR is an octal bus transceiver with 3-state outputs manufactured by Texas Instruments. It operates from a supply voltage of 1.65 V to 3.6 V and supports bidirectional data transmission between two buses based on the DIR input logic level. The device features inputs that accept voltages up to 5.5 V, enabling mixed-mode signal operation in 5-V/3.3-V systems. It includes Ioff circuitry for partial-power-down mode support and back drive protection. The component is housed in a 20-SOP package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports bidirectional data transmission between A and B buses
• Inputs accept voltages up to 5.5 V for mixed-mode compatibility
• Ioff circuitry prevents damaging current backflow during power-down
• Outputs provide 3-state isolation when disabled

Buffers, Drivers, Receivers, Transceivers Applications

• Cable modem termination systems
• Servers
• LED displays
• Network switches
• I/O expanders

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's Package Option Addendum to confirm the exact physical package type, such as SSOP, TVSOP, or SOP. Ensure the selected variant matches the required thermal resistance and moisture sensitivity level ratings for the intended operating temperature range. Confirm RoHS compliance status and lead finish specifications prior to final procurement decisions.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring asynchronous communication between data buses with mixed voltage levels. The device is suitable where high drive capability and fast edges are necessary, provided routing conditions prevent ringing. Verify that the system design accommodates the specified input transition rates and output load currents to maintain signal integrity across the operating temperature range.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVC245A family of octal bus transceivers. The 'SN' prefix indicates it is a commercial-grade device produced by Texas Instruments. The 'LVC' designation identifies the low-voltage CMOS technology, while '245' specifies the octal bus transceiver function. The 'ANSR' suffix denotes the specific SOP (NS) package configuration and reel carrier format.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check the manufacturer's official cross-reference documentation for verified substitutes. Ensure any replacement maintains the same 20-pin SOP footprint and compatible electrical characteristics, including the 1.65-V to 3.6-V supply range and 5.5-V input tolerance.