MAX3243 3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver With +/-15kV ESD (HBM) Protection | TI.com

MAX3243 (ACTIVE)

3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver With +/-15kV ESD (HBM) Protection

 

Recommended alternative parts

  • TRS3243E  -  The device has the SAME FUNCTIONALITY/PINOUT as the compared device but includes enhanced IEC61000-4-2 ESD Protection.
  • MAX3243E  -  TI recommends the MAX3243E in new designs. The MAX3243E is an improved direct drop-in replacement for the MAX3243
  • TRS3243  - The device is an EXACT EQUIVALENT in functionality and parametrics to the compared device. 

Description

The MAX3243 device consists of three line drivers, five line receivers which is ideal for DE-9 DTE interface. ±15-kV ESD (HBM) protection pin to pin (serial- port connection pins, including GND). Flexible power features saves power automatically. Special outputs ROUT2B and INVALID are always enabled to allow checking for ring indicator and valid RS232 input.

Features

  • Operates With 3-V to 5.5-V VCC Supply
  • Single-Chip and Single-Supply Interface
    for IBM PC/AT Serial Port
  • RS-232 Bus-Pin ESD Protection of
    ±15 kV Using Human-Body Model (HBM)
  • Meets or Exceeds the Requirements of
    TIA/EIA-232-F and ITU V.28 Standards
  • Three Drivers and Five Receivers
  • Operates Up To 250 kbit/s
  • Low Active Current: 300 μA Typical
  • Low Standby Current: 1 μA Typical
  • External Capacitors: 4 × 0.1 μF
  • Accepts 5-V Logic Input With 3.3-V Supply
  • Always-Active Noninverting Receiver
    Output (ROUT2B)
  • Operating Temperature
    • MAX3243C: 0°C to 70°C
    • MAX3243I: –40°C to 85°C
  • Serial-Mouse Driveability
  • Auto-Powerdown Feature to Disable Driver
    Outputs When No Valid RS-232 Signal Is
    Sensed

Parametrics

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Part number Order Drivers per package Receivers per package Logic voltage (Min) (V) Data rate (Max) (kbps) Main supply voltage (Nom) (V) Features ESD HBM (kV) Rating Operating temperature range (C) Package Group
MAX3243 Order now 3     5     3.3     250     3.3
5    
Auto-Powerdown     15     Catalog     0 to 70
-40 to 85    
SOIC | 28
SSOP | 28
TSSOP | 28    
MAX3243E Order now 3     5     3.3     500     3.3
5    
Auto-Powerdown     15     Catalog     -40 to 85
0 to 70    
SOIC | 28
SSOP | 28
TSSOP | 28
VQFN | 32    
TRS3243 Order now 3     5     3.3     250     3.3
5    
Auto-Powerdown     15     Catalog     -40 to 85
0 to 70    
SSOP | 28
TSSOP | 28    
TRS3243E Order now 3     5     3.3     600     3.3
5    
Auto-Powerdown     15     Catalog     -40 to 85
0 to 70    
SOIC | 28
SSOP | 28
TSSOP | 28
VQFN | 32