MAX232DR.B

Part: MAX232 Texas Instruments

Type: Dual EIA-232 Drivers and Receivers

Key Specs:

• Single 5V power supply
• 1µF charge-pump capacitors
• Up to 120kbit/s operation
• ±30V Input levels
• Low supply current: 8mA typical
• ESD protection: 2000V Human-body model (A114-A)
• Receiver typical threshold: 1.3 V
• Receiver typical hysteresis: 0.5V

Features:

• Meets or exceeds TIA/EIA-232-F and ITU recommendation V.28
• Operates from a single 5V power supply with 1µF charge-pump capacitors
• Operates up to 120kbit/s
• Two drivers and two receivers
• ±30V Input levels
• Low supply current: 8mA typical
• ESD protection exceeds JESD 22
• 2000V Human-body model (A114-A)
• Upgrade with improved ESD (15kV HBM) and 0.1µF charge-pump capacitors is available with the MAX202 device

Applications:

• TIA/EIA-232-F
• Battery-powered systems
• Terminals
• Modems
• Computers

Package:

• SOIC (16): 9.9mm × 6mm
• SOIC (16): 10.4mm × 10.3mm
• PDIP (16): 19.3mm × 9mm
• SOP (16): 10.2mm × 7.8 mm

• Meets or exceeds TIA/EIA-232-F and ITU recommendation V.28
• Operates from a single 5V power supply with 1µF charge-pump capacitors
• Operates up to 120kbit/s
• Two drivers and two receivers
• ±30V Input levels
• Low supply current: 8mA typical
• ESD protection exceeds JESD 22
  • 2000V Human-body model (A114-A)
• Upgrade with improved ESD (15kV HBM) and 0.1µF charge-pump capacitors is available with the MAX202 device

• TIA/EIA-232-F
• Battery-powered systems
• Terminals
• Modems
• Computers

Figure 4-1. MAX232: D, DW, N or NS Package MAX232I: D, DW, or N Package (Top View)

Table 4-1. Pin Functions

| PIN | |-------|-----|------|--------------------------------------------------------| | NAME | NO. | TYPE | DESCRIPTION | | C1+ | 1 | — | Positive lead of C1 capacitor | | VS+ | 2 | O | Positive charge pump output for storage capacitor only | | C1- | 3 | — | Negative lead of C1 capacitor | | C2+ | 4 | — | Positive lead of C2 capacitor | | C2- | 5 | — | Negative lead of C2 capacitor | | VS- | 6 | O | Negative charge pump output for storage capacitor only | | T2OUT | 7 | O | RS232 line data output (to remote RS232 system) | | R2IN | 8 | I | RS232 line data input (from remote RS232 system) | | R2OUT | 9 | O | Logic data output (to UART) | | T2IN | 10 | I | Logic data input (from UART) | | T1IN | 11 | I | Logic data input (from UART) | | R1IN | 13 | I | RS232 line data input (from remote RS232 system) | | T1OUT | 14 | O | RS232 line data output (to remote RS232 system) | | GND | 15 | — | Ground | | VCC | 16 | — | Supply Voltage, Connect to external 5V power supply |

over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 8-1)

• (1) All typical values are at VCC = 5V, and TA = 25°C.
• (2) Test conditions are C1–C4 = 1μF at VCC = 5V ± 0.5V

over operating free-air temperature range (unless otherwise noted)

⁽¹⁾ Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2) All voltages are with respect to network GND.

(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report (SPRA953).

Product Folder Links: MAX232

⁽²⁾ JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

5.5 Electrical Characteristics, Device

over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 8-1)

• (1) All typical values are at VCC = 5V, and TA = 25°C.
• (2) Test conditions are C1–C4 = 1μF at VCC = 5V ± 0.5V