SN74HCS245DGSR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HCS245DGSR is an octal bus transceiver featuring three-state outputs and Schmitt-trigger inputs, manufactured by Texas Instruments. It operates within a wide supply voltage range of 2 V to 6 V and supports an extended ambient temperature range from –40°C to +125°C. The device provides low power consumption with typical ICC of 100 nA and input leakage current of ±100 nA. Output drive capability reaches ±7.8 mA at 6 V. Propagation delay varies from 7 ns to 49 ns depending on voltage and temperature. It is housed in a DGS (SOT-20) package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Schmitt-trigger inputs provide hysteresis for tolerance against slow or noisy signals
• Wide operating voltage range supports 2 V to 6 V applications
• Low power consumption with minimal static supply current
• Balanced three-state output architecture for bidirectional data transfer

Buffers, Drivers, Receivers, Transceivers Applications

• Enable or disable digital signals in system control
• Eliminate slow or noisy input signals through hysteresis filtering
• Hold signals during controller reset sequences
• Debounce mechanical switches
• Drive signals over long traces or transmission lines

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix matches the required package type, as the SN74HCS245 family includes multiple packages such as RKS and DGS. Confirm that the DGS designation corresponds to the SOT-20 form factor required for your PCB layout. Ensure compatibility with the intended supply voltage range and thermal requirements before finalizing procurement specifications.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when noise immunity is critical due to its Schmitt-trigger input architecture. It is suitable for systems requiring operation across a broad voltage spectrum from 2 V to 6 V. Consider the extended temperature range if the application involves harsh environmental conditions. Verify that the output drive strength meets the load requirements, noting that excessive capacitive loading may impact performance.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74HCS245 series of octal bus transceivers. It shares functional similarities with other bus transceivers but distinguishes itself through Schmitt-trigger inputs and a wider voltage range compared to standard HCT or AHC families. The DGSR suffix indicates the DGS package with reel tape-and-reel packaging for automated assembly processes.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct replacements include other SN74HCS245 variants with different package options like SN74HCS245RKR. Cross-family substitutes such as SN74AHC245 or SN74HC245 may require voltage level adjustments and lack Schmitt-trigger inputs. Verify pinout compatibility and electrical characteristics before substituting.