See datasheet for actual packaging/pinout drawings

Package | PIN:

DB | 16


I (-40 to 85)

ECO Plan:

Green (RoHS & no Sb/Br)

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TRS3227EIDBR-3-V to 5.5-V Single-Channel RS-232 Line Driver/Receiver With +/-15-kV ESD Protection

The TRS3227E consists of one line driver, one line receiver, and a dual charge-pump circuit with ±15-kV IEC ESD protection pin to pin (serial-port connection pins, including GND). The 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. This device operates at data-signaling rates of 1 Mbit/s in normal operating mode and a maximum of 30-V/µs driver output slew rate. This device also features a logic-level output (READY) that asserts when the charge pump is regulating and the device is ready to begin transmitting.

The TRS3227E achieves a 1-µA supply current using the auto-powerdown plus feature. This device automatically enters a low-power powerdown mode when the RS-232 cable is disconnected or the drivers of the connected peripherals are inactive for more than 30 s. They turn on again when they sense a valid transition at any driver or receiver input. Auto-powerdown saves power without changes to the existing BIOS or operating system.

The TRS3227EC is characterized for operation from 0°C to 70°C. The TRS3227EI is characterized for operation from -40°C to 85°C.

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