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

SN75C3223 is not recommended for new designs
Although this product continues to be in production to support previous designs, we don't recommend it for new designs. Consider one of these alternates:
open-in-new Compare alternates
Drop-in replacement with upgraded functionality to the compared device
TRSF3223E ACTIVE 3- to 5.5-V dual channel 1Mbps RS-232 line driver/receiver with +/-15-kV IEC-ESD protection The commercial temp device has the SAME FUNCTIONALITY/PINOUT as the compared device but includes enhanced IEC61000-4-2 ESD Protection.

Product details

Drivers per package 2 Receivers per package 2 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
Drivers per package 2 Receivers per package 2 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
SOIC (DW) 20 131.84 mm² 12.8 x 10.3 SSOP (DB) 20 56.16 mm² 7.2 x 7.8
  • Operate With 3-V to 5.5-V VCC Supply
  • Operate Up to 1 Mbit/s
  • Low Standby Current ...1 µA Typical
  • External Capacitors ...4 × 0.1 µF
  • Accept 5-V Logic Input With 3.3-V Supply
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • RS-232 Bus-Pin ESD Protection Exceeds ±15 kV Using Human-Body Model (HBM)
  • Applications
    • Battery-Powered Systems, PDAs, Notebooks, Laptops, Palmtop PCs, and Hand-Held Equipment

  • Operate With 3-V to 5.5-V VCC Supply
  • Operate Up to 1 Mbit/s
  • Low Standby Current ...1 µA Typical
  • External Capacitors ...4 × 0.1 µF
  • Accept 5-V Logic Input With 3.3-V Supply
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • RS-232 Bus-Pin ESD Protection Exceeds ±15 kV Using Human-Body Model (HBM)
  • Applications
    • Battery-Powered Systems, PDAs, Notebooks, Laptops, Palmtop PCs, and Hand-Held Equipment

The SN65C3223 and SN75C3223 consist of two line drivers, two line receivers, and a dual charge-pump circuit with ±15-kV ESD protection pin to pin (serial-port connection pins, including GND). The devices provide 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. The devices operate at data signaling rates up to 1 Mbit/s and a driver output slew rate of 24 V/µs to 150 V/µs.

Flexible control options for power management are available when the serial port is inactive. The auto-powerdown feature functions when FORCEON is low and FORCEOFF\ is high. During this mode of operation, if the device does not sense a valid RS-232 signal, the driver outputs are disabled. If FORCEOFF\ is set low and EN is high, both drivers and receivers are shut off, and the supply current is reduced to 1 µA. Disconnecting the serial port or turning off the peripheral drivers causes auto-powerdown to occur. Auto-powerdown can be disabled when FORCEON and FORCEOFF\ are high. With auto-powerdown enabled, the device is activated automatically when a valid signal is applied to any receiver input. The INVALID\ output is used to notify the user if an RS-232 signal is present at any receiver input. INVALID\ is high (valid data) if any receiver input voltage is greater than 2.7 V or less than –2.7 V or has been between –0.3 V and 0.3 V for less than 30 µs. INVALID\ is low (invalid data) if the receiver input voltage is between –0.3 V and 0.3 V for more than 30 µs. Refer to Figure 4 for receiver input levels.

The SN65C3223 and SN75C3223 consist of two line drivers, two line receivers, and a dual charge-pump circuit with ±15-kV ESD protection pin to pin (serial-port connection pins, including GND). The devices provide 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. The devices operate at data signaling rates up to 1 Mbit/s and a driver output slew rate of 24 V/µs to 150 V/µs.

Flexible control options for power management are available when the serial port is inactive. The auto-powerdown feature functions when FORCEON is low and FORCEOFF\ is high. During this mode of operation, if the device does not sense a valid RS-232 signal, the driver outputs are disabled. If FORCEOFF\ is set low and EN is high, both drivers and receivers are shut off, and the supply current is reduced to 1 µA. Disconnecting the serial port or turning off the peripheral drivers causes auto-powerdown to occur. Auto-powerdown can be disabled when FORCEON and FORCEOFF\ are high. With auto-powerdown enabled, the device is activated automatically when a valid signal is applied to any receiver input. The INVALID\ output is used to notify the user if an RS-232 signal is present at any receiver input. INVALID\ is high (valid data) if any receiver input voltage is greater than 2.7 V or less than –2.7 V or has been between –0.3 V and 0.3 V for less than 30 µs. INVALID\ is low (invalid data) if the receiver input voltage is between –0.3 V and 0.3 V for more than 30 µs. Refer to Figure 4 for receiver input levels.

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Technical documentation

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Type Title Date
* Data sheet 3-V to 5-V Multichannel RS-232 Compatible Line Driver/Receiver datasheet (Rev. B) 19 Oct 2004
* Errata Datasheet Errata for SN65/75C3223 SN65/75C3232 SN65/75C3243 TRSF3223/3232/3243 13 Nov 2008

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