IC VREG FIXED/ADJUSTABLE POSITIVE REGULATOR, PDIP8, PLASTIC, DIP-8, Fixed/Adjustable Positive Single Output Standard Regulator

Power Management IC: 4.4V Supervisor, Battery Backup, Watchdog, 100mA Output, DIP
0.1 µF, +5V CMOS RS-232 200 kBPS Transceiver with 4 Drivers & 4 Receivers

5 V, Slew-Rate Limited, Low Power, 250 kbps, Half Duplex RS-485/RS-422 Transceiver

5 V, Slew-Rate Limited, Low Power, 250 kbps, Half Duplex RS-485/RS-422 Transceiver