SP3220

Meets True RS-232 Protocol Operation From A +3.0V to +5.5V Power Supply
Minimum 120 Kbps Data Rate Under Full Load
1A Low-Power Shutdown With Receivers Active
Interoperable With RS-232 Down To +2.7V Power Source
Pin-Compatible With The MAX3221E Device Without The AUTO ON-LINE® Feature
ESD Specifications: +2kV Human Body Model

V_CC...................................................................-0.3V to +6.0V
V+ (NOTE 1)......................................................-0.3V to +7.0V
V- (NOTE 1).......................................................+0.3V to -7.0V
V+ + |V-| (NOTE 1)...........................................................+13V
I_CC (DC V_CC or GND current)......................................±100mA
Input Voltages
TxIN, EN .......................................................... -0.3V to +6.0V
RxIN .............................................................................. ±15V
Output Voltages
TxOUT ......................................................................... ±15.0V
RxOUT ............................................................. -0.3V to +6.0V
Short-Circuit Duration
TxOUT .................................................................. Continuous
Storage Temperature ................................. -65°C to +150°C
Power Dissipation Per Package
16-pin SSOP (derate 9.69mW/oCabove+70oC) ........ 775mW
16-pin TSSOP (derate 10.5mW/oC above +70oC) ..... 840mW
16-pin Wide SOIC (derate 11.2mW/oC above+70oC) 900mW

The SP3220 device is an RS-232 driver/receiver solution intended for portable or hand-held applications such as notebook or palmtop computers. The device has a highefficiency, charge-pump power supply that requires only 0.1F capacitors in 3.3V operation. This charge pump allows the SP3220 device to deliver true RS-232 performance from a single power supply ranging from +3.3V to +5.0V.

The SP3220 device has a low-power shutdown mode where the driver outputs and charge pumps are disabled. During shutdown, the supply current falls to less than 1A.

The SP3220 device meets the EIA/TIA-232 and V.28/V.24 communication protocols and can be implemented in battery-powered, portable, or hand-held applications such as notebook or palmtop computers. The device features Sipex's proprietary on-board charge pump circuitry that generates 2 x VCC for RS-232 voltage levels from a single +3.0V to +5.5V power supply. This series is ideal for+3.3V-only systems, mixed +3.0V to +5.5V systems, or +5.0V-only systems that require true RS-232 performance. The SP3220 device has a driver that operates at a typical data rate of 235Kbps fully loaded.

The SP3220 is a 1-driver/1-receiver device ideal for portable or hand-held applications. It features a 1A shutdown mode that reduces power consumption and extends battery life in portable systems. Its receivers remain active in shutdown mode, allowing external devices such as modems to be monitored using only 1A supply current.