TRSF3223 Series
3- to 5.5-V dual channel 1Mbps RS-232 line driver/receiver with +/-15-kV IEC-ESD protection
Manufacturer: Texas Instruments
Catalog(4 parts)
| Part | Operating Temperature▲▼ | Operating Temperature▲▼ | Protocol | Package / Case▲▼ | Package / Case▲▼ | Package / Case | Data Rate▲▼ | Mounting Type | Duplex | Supplier Device Package | Voltage - Supply▲▼ | Voltage - Supply▲▼ | Type | Number of Drivers/Receivers▲▼ | Number of Drivers/Receivers▲▼ | Receiver Hysteresis▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
-40 °C | 85 °C | RS232 | 0.004394200164824724 m | 0.004399999976158142 m | 20-TSSOP | 1048576 bit/s | Surface Mount | Full | 20-TSSOP | 3 V | 5.5 V | Transceiver | 2 ul | 2 ul | 0.5 V | |
0 °C | 70 °C | RS232 | 0.0052999998442828655 m, 0.005308600142598152 m | 20-SSOP | 1048576 bit/s | Surface Mount | Full | 20-SSOP | 3 V | 5.5 V | Transceiver | 2 ul | 2 ul | 0.5 V | ||
-40 °C | 85 °C | RS232 | 0.004394200164824724 m | 0.004399999976158142 m | 20-TSSOP | 1048576 bit/s | Surface Mount | Full | 20-TSSOP | 3 V | 5.5 V | Transceiver | 2 ul | 2 ul | 0.5 V | |
-40 °C | 85 °C | RS232 | 0.007493000011891127 m, 0.007499999832361937 m | 20-SOIC | 1048576 bit/s | Surface Mount | Full | 20-SOIC | 3 V | 5.5 V | Transceiver | 2 ul | 2 ul | 0.5 V |
Key Features
• ESD protection for RS-232 bus pins±15-kV Human-body model (HBM)±8-kV IEC 61000-4-2, contact discharge±15-kV IEC 61000-4-2, Air-gap dischargeMeets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standardsOperates with 3-V to 5.5-V V CC supplyOperates up to 1000 kbit/sTwo drivers and two receiversLow standby current: 1 µA TypicalExternal capacitors: 4 × 0.1 µFAccepts 5-V logic input with 3.3-V supplyESD protection for RS-232 bus pins±15-kV Human-body model (HBM)±8-kV IEC 61000-4-2, contact discharge±15-kV IEC 61000-4-2, Air-gap dischargeMeets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standardsOperates with 3-V to 5.5-V V CC supplyOperates up to 1000 kbit/sTwo drivers and two receiversLow standby current: 1 µA TypicalExternal capacitors: 4 × 0.1 µFAccepts 5-V logic input with 3.3-V supply
Description
AI
The TRSF3223E consists 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). This device meets the requirements of TIA/EIA-232-F and 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. The TRSF3223E operates at typical data signaling rates up to 1000 kbits.
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 mA. 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 automatically activated 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 for receiver input levels.
The TRSF3223E consists 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). This device meets the requirements of TIA/EIA-232-F and 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. The TRSF3223E operates at typical data signaling rates up to 1000 kbits.
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 mA. 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 automatically activated 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 for receiver input levels.