The SN74ALS642A-1DWRG4 from Texas Instruments is an inverting transceiver with 1 element, 8 bits per element and an open collector output, rated at 5.5 V, in a 20-SOIC package.
The SN74ALS642A-1DWRE4 from Texas Instruments is an inverting transceiver Integrated Circuit with 1 element of 8 bits each and open-collector output, rated 5.5 V, in a 20-SOIC package.
The SN74ALS642A-1N from Texas Instruments is an inverting transceiver with 1 element, 8 bits per element, and open collector output rated at 5.5 V, in a 20-PDIP package.
The SN74ALS642A-1DW from Texas Instruments is an inverting transceiver Integrated Circuit with a 5.5 V rating, 1 element, 8 bits per element and an open-collector output, in a 20-SOIC package.
The SN74ALS642A-1NSR from Texas Instruments is an inverting transceiver Integrated Circuit with 1 element, 8 bits per element, open collector output and a 5.5 V rating, in a 20-SO package.
The SN74ALS642A-1DWR from Texas Instruments is an inverting transceiver with 1 element of 8 bits each and an open-collector output, in a 20-SOIC package.