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SN75C3243
  • SN75C3243
  • SN75C3243
  • SN75C3243
  • SN75C3243

SN75C3243

ACTIVE

3- to 5.5-V multichannel 1Mbps RS-232 line driver/receiver with +/-15-kV ESD protection

Texas Instruments SN75C3243 Product Info

1 April 2026 0

Parameters

Drivers per package

3

Receivers per package

5

Logic voltage (min) (V)

3.3

Data rate (max) (Mbps)

1

Main supply voltage (nom) (V)

3.3, 5

Features

Auto-Powerdown

ESD HBM (kV)

15

Rating

Catalog

Operating temperature range (°C)

0 to 70

Vout (typ) (V)

5.4

Package

SOIC (DW)-28-184.37 mm² 17.9 x 10.3

Features

  • Operates With 3-V to 5.5-V VCC Supply
  • Always-Active Noninverting Receiver Output (ROUT2B)
  • Low Standby Current: 1 µA Typical
  • External Capacitors: 4 × 0.1 µF
  • Accepts 5-V Logic Input With 3.3-V Supply
  • Inter-Operable With SN65C3238, SN75C3238
  • Supports Operation From 250 kbit/s to 1 Mbit/s
  • RS-232 Bus-Pin ESD Protection Exceeds ±15 kV Using Human-Body Model (HBM)
  • Operates With 3-V to 5.5-V VCC Supply
  • Always-Active Noninverting Receiver Output (ROUT2B)
  • Low Standby Current: 1 µA Typical
  • External Capacitors: 4 × 0.1 µF
  • Accepts 5-V Logic Input With 3.3-V Supply
  • Inter-Operable With SN65C3238, SN75C3238
  • Supports Operation From 250 kbit/s to 1 Mbit/s
  • RS-232 Bus-Pin ESD Protection Exceeds ±15 kV Using Human-Body Model (HBM)

Description

The SN65C3243 and SN75C3243 consist of three line drivers, five line receivers, and a dual charge-pump circuit with ±15-kV ESD protection pin to pin (serial-port connection pins, including GND). This device provides the electrical interface between an asynchronous communication controller and the serial-port connector. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. In addition, this device includes an always-active noninverting output (ROUT2B), which allows applications using the ring indicator to transmit data while the device is powered down. The device operates at data signaling rates up to 1 Mbit/s and an increased slew-rate range of 24 V/µs to 150 V/µs.

The SN65C3243 and SN75C3243 consist of three line drivers, five line receivers, and a dual charge-pump circuit with ±15-kV ESD protection pin to pin (serial-port connection pins, including GND). This device provides the electrical interface between an asynchronous communication controller and the serial-port connector. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. In addition, this device includes an always-active noninverting output (ROUT2B), which allows applications using the ring indicator to transmit data while the device is powered down. The device operates at data signaling rates up to 1 Mbit/s and an increased slew-rate range of 24 V/µs to 150 V/µs.

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