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MAX3232CPWR

3V-5.5V dual RS-232 driver/receiver, 250kbps, +/-15kV ESD, 4x 0.1uF caps, TSSOP-16

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Manufacturer Part：

MAX3232CPWR

Package：

16-TSSOP (5 x 6.4 mm)

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Description

Product Overview

The MAX3232CPWR from Texas Instruments is a 3V to 5.5V multichannel RS-232 line driver/receiver with +/-15kV ESD protection. It features 2 drivers and 2 receivers, operates at data rates up to 250kbps, and requires only four 0.1uF external capacitors. The TSSOP-16 package makes it ideal for space-constrained applications.

Key Specifications

Manufacturer Texas Instruments
Protocol RS-232
Drivers / Receivers 2 / 2
Data Rate 250 kbps
Supply Voltage 3V ~ 5.5V
ESD Protection +/-15kV HBM
Supply Current 300uA (typ)
Package 16-TSSOP (5 x 6.4mm)
Operating Temperature 0°C ~ 70°C

Features

  • Operates from single 3V to 5.5V supply
  • +/-15kV ESD protection on RS-232 bus pins (HBM)
  • Meets TIA/EIA-232-F and ITU V.28 standards
  • Low supply current: 300uA typical
  • Only 4 external 0.1uF capacitors required
  • Accepts 5V logic input with 3.3V supply
  • Data signaling rates up to 250kbps
  • Dual charge-pump circuit generates RS-232 voltage levels

Applications

  • Battery-powered systems and PDAs
  • Industrial control and instrumentation
  • Point-of-sale terminals
  • Telecommunications equipment
  • Computer peripherals and modems

The Texas Instruments MAX3232CPWR is a multichannel RS-232 line driver and receiver designed for applications requiring RS-232 communication with low-voltage logic. It integrates two line drivers, two line receivers, and a dual charge-pump circuit that generates the necessary RS-232 voltage levels from a single 3V to 5.5V supply. The device provides +/-15kV ESD protection on all RS-232 bus pins, ensuring robust operation in harsh environments. With a typical supply current of only 300uA and requiring just four small 0.1uF external capacitors, the MAX3232CPWR is well-suited for battery-powered and space-constrained applications.

The MAX3232CPWR converts TTL/CMOS logic levels to RS-232 voltage levels and vice versa through three main subsystems: 1) Dual Charge Pump: The internal charge pump uses four external 0.1uF capacitors to generate +5.4V (V+) and -5.4V (V-) from a single 3V to 5.5V supply, providing the voltage swings required by RS-232 standard. 2) Drivers: The two line drivers invert and level-shift TTL/CMOS logic inputs (0-5V) to RS-232 outputs (+/-5.4V typical), meeting the TIA/EIA-232-F minimum +/-5V requirement. 3) Receivers: The two line receivers accept RS-232 input levels (up to +/-25V) and convert them to TTL/CMOS logic outputs, with inversion and threshold detection at approximately 1.4V.

Pin Name Type Function
1 C1+ Capacitor Positive terminal of charge pump capacitor C1
2 V+ Output Positive charge pump output (+5.4V typical)
3 C1- Capacitor Negative terminal of charge pump capacitor C1
4 C2+ Capacitor Positive terminal of charge pump capacitor C2
5 C2- Capacitor Negative terminal of charge pump capacitor C2
6 V- Output Negative charge pump output (-5.4V typical)
7 DOUT2 Output RS-232 driver output 2
8 RIN2 Input RS-232 receiver input 2
9 ROUT2 Output TTL/CMOS receiver output 2
10 DIN2 Input TTL/CMOS driver input 2
11 DIN1 Input TTL/CMOS driver input 1
12 ROUT1 Output TTL/CMOS receiver output 1
13 RIN1 Input RS-232 receiver input 1
14 DOUT1 Output RS-232 driver output 1
15 GND Ground Ground
16 VCC Power Supply voltage (3V to 5.5V)
  • Battery-powered portable devices requiring RS-232 communication
  • Industrial control systems and PLC serial interfaces
  • Point-of-sale (POS) terminals and payment systems
  • Telecommunications equipment and modem interfaces
  • Computer peripherals with legacy serial ports
Manufacturer Part Number Package Notes
TI MAX3232ECPWR 16-TSSOP +/-15kV IEC ESD, 0-70C
TI MAX3232IPWR 16-TSSOP Industrial temp -40C to 85C
Maxim MAX3232ESE+T 16-SOIC 235kbps, SOIC package
TI SN65C3232 16-TSSOP 1Mbps, pin-compatible upgrade
ST ST3232EBPR 16-TSSOP 3V-5.5V, 250kbps
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All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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