Dual RS-232 driver/receiver in DIP-16 package, powered from a single 5V supply. Internal charge pump generates ±10V for RS-232 levels using four external 1 µF capacitors. Two TX and two RX channels; not 3.3V compatible.

Pinout

Logical pinout · physical placement not verified
MAX232CPE DIP-16C1+R2OUTV+T2INC1-T1INC2+R1OUTC2-R1INV-T1OUTT2OUTGNDR2INVCC
  • C1+1
    Type · Signal
  • V+2
    Type · Power
  • C1-3
    Type · Signal
  • C2+4
    Type · Signal
  • C2-5
    Type · Signal
  • V-6
    Type · Power
  • T2OUT7
    Type · Signal
  • R2IN8
    Type · Signal
  • R2OUT9
    Type · Signal
  • T2IN10
    Type · Signal
  • T1IN11
    Type · Signal
  • R1OUT12
    Type · Signal
  • R1IN13
    Type · Signal
  • T1OUT14
    Type · Signal
  • GND15
    Type · Ground
  • VCC16
    Type · Power

Bare ICs

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74HC logic gates, MCP3008/MCP23017 ADCs and expanders, 24LC256 EEPROM, 4N25-series optocouplers and ULN2803A drivers — bare DIP chips with no breakout-board conveniences like pull-ups or level shifting.

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