SP3220B/U

Meets True RS-232 Protocol Operation From A +3.0V to +5.5V Power Supply
Minimum 250 Kbps Data Rate (SP3220B) or 1Mbps Data Rate (SP3220U) under Fully Load
1µA Low-Power Shutdown With Receivers Active
Interoperable With EIA/TIA - 232 and adheres to EIA/TIA - 562 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 .............................................................................. ±25V
Output Voltages
TxOUT ......................................................................... ±13.2V
RxOUT ..................................................... -0.3V to (V_CC+0.3V)
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 SP3220B/U device is an RS-232 driver/receiver solution intended for portable or hand-held applications such as notebook or palmtop computers. The SP3220B/U device has a highefficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V operation. This charge pump allows the SP3220B/U device to deliver true RS-232 performance from a single power supply ranging from +3.3V to +5.0V.

The SP3220B/U 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 1µA.

The SP3220B/U 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 SP3220B/ U 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 SP3220B device has a driver that can operate at a data rate of 250Kbps fully loaded. The SP3220U can Operate at 1000Kbps

The SP3220B/U is a 1-driver/1-receiver device ideal for portable or hand-held applications.The SP3220B/U features a 1µA 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 1µA supply current.