The SP3239E is an RS-232 transceiver solution intended for portable or hand-held applications such as notebook and palmtop computers. The SP3239E uses an internal high-efficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V operation. This charge pump and Sipex's driver architecture allow the SP3239E device to deliver compliant RS-232 performance from a single power supply ranging from +3.0V to +5.0V. The SP3239E is a 5-driver/3-receiver device, ideal for laptop/notebook computer and PDA applications. The SP3239E includes one complementary receiver that remains alert to monitor an external device's Ring Indicate signal while the device is shutdown.
The SP3239E is a 5‑driver/3‑receiver RS‑232 transceiver designed for portable, battery‑powered applications such as notebooks and palmtops. It uses a patented charge‑pump architecture to generate compliant RS‑232 voltage levels from a single supply of +3.0 V to +5.5 V, and includes a shutdown‑aware receiver that monitors an external Ring Indicator signal.
The datasheet provides detailed electrical characteristics, pin descriptions, typical performance curves, and ordering information. Key features include a regulated charge pump, enhanced ESD protection (+15 kV HBM), and operation over a wide temperature range. The device is supplied in 28‑pin SSOP or TSSOP packages, with lead‑free options available.
| Supply Voltage Range | +3.0 V to +5.5 V |
|---|---|
| Maximum Data Rate | 250 kbps |
| Number of Drivers | 5 |
| Number of Receivers | 3 |
| Shutdown Supply Current | 1.0 pA |
| Output Voltage Swing (typical) | +5.0 V |
| ESD Rating (Human Body Model) | +15 kV |
| Storage Temperature Range | -65 °C to +150 °C |
| Package Type | 28‑pin TSSOP |
| Lead‑free Option Suffix | -L |
It operates from +3.0 V up to +5.5 V.
The device can handle up to 250 kbps when fully loaded.
It contains five drivers and three receivers.