The SP3249E device is an RS-232 transceiver solution intended for portable or hand-held applications such as notebook and palmtop computers. The SP3249E 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 SP3249E device to deliver complian.
Sipex's proprietary and patented (U.S. #5,306,954) on-board charge pump circuitry that generates ±5.5V RS-232 voltage levels from a single +3.0V to +5.5V power supply. The SP3249E device can operate at a data rate of 250kbps fully loaded. The SP3249E is a 5-driver/3-receiver device, ideal for portable or hand-held applications. The SP3249E device is an ideal choice for power sensitive designs. THEORY OF OPERATION The SP3249E device is made up of three basic circuit blocks: 1. Drivers, 2. Receivers, and 3. the Sipex proprietary charge pump. Drivers The drivers are inverting level transmitters t.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | SP3243 |
Sipex |
Intelligent +3.0V to +5.5V RS-232 Transceivers | |
2 | SP3243B |
Sipex |
Intelligent +3.0V to +5.5V RS-232 Transceivers | |
3 | SP3243E |
Sipex |
Intelligent +3.0V to +5.5V RS-232 Transceivers | |
4 | SP3243E |
Exar |
3 Driver/5 Receiver Intelligent +3.0V to +5.5V RS-232 Transceivers | |
5 | SP3243E |
MaxLinear |
RS-232 Transceivers | |
6 | SP3243EH |
Sipex |
High Speed Intelligent +3.0V to +5.5V RS-232 Transceivers | |
7 | SP3243EU |
Sipex |
High Speed Intelligent +3.0V to +5.5V RS-232 Transceivers | |
8 | SP3243H |
Sipex |
High Speed Intelligent +3.0V to +5.5V RS-232 Transceivers | |
9 | SP3243U |
Sipex |
High Speed Intelligent +3.0V to +5.5V RS-232 Transceivers | |
10 | SP3244E |
Sipex |
3.0V to 5.5V RS-232 Transceivers | |
11 | SP3244E |
Exar |
3.3V or 5V RS-232 Transceivers | |
12 | SP3245E |
Sipex |
3.0V to 5.5V RS-232 Transceivers |