Texas Instruments - Part Numbers

SN65C3221EDBR IC, 3V to 5.5V Single-channel RS-232 1-Mbits Line Driver and Receiver
SN65C3221EDBR.A IC, 3V to 5.5V Single-channel RS-232 1-Mbits Line Driver and Receiver
SN65C3221EDBRG4 IC, 3V to 5.5V Single-channel RS-232 1-Mbits Line Driver and Receiver
SN65C3221EDBRG4.A IC, 3V to 5.5V Single-channel RS-232 1-Mbits Line Driver and Receiver

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