Features: VL Pin for Compatibility with Mixed-Voltage Systems
±15kV ESD Protection on Rx Inputs and Tx Outputs
Low 300A Supply Current
Guaranteed 250kbps Data Rate
1A AutoShutdown Plus™ with Receivers Active
Meets EIA/TIA-232 Specifications Down to 3.0VApplicationSubnotebook/Palmtop Computers
PDAs and PDA Cradles
Cell Phone Data Cables
Battery-Powered Equipment
Hand-Held Equipment
PeripheralsPinout
SpecificationsVCC to GND...............................................................-0.3V to +6V
VL to GND....................................................-0.3V to (VCC + 0.3V)
V+ to GND ................................................................-0.3V to +7V
V- to GND .................................................................+0.3V to -7V
V+ +½ V-½(Note 1) ............................................................ +13V
Input Voltages
T_IN, FORCEON, FORCEOFF to GND..........................-0.3V to +6V
R_IN to GND ........................................................................±25V
Output Voltages
T_OUT to GND...................................................................±13.2V
R_OUT............................................................-0.3V to (VL + 0.3V)
Short-Circuit Duration T_OUT to GND..........................Continuous
Continuous Power Dissipation (TA = +70°C)
24-Pin TSSOP (derate 7.8mW/°C above +70°C) ..............625mW
Operating Temperature Ranges
MAX3387ECUG ........................................................0°C to +70°C
MAX3387EEUG .....................................................-40°C to +85°C
Junction Temperature.......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) ..............................+300°C
DescriptionThe MAX3387E 3V powered EIA/TIA-232 and V.28/V.24 is a communications interface with low power requirements, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection. The MAX3387E has three receivers and three transmitters. All RS-232 inputs and outputs are protected to ±15kV using the IEC 1000-4-2 Air-Gap Discharge method, ±8kV using
the IEC 1000-4-2 Contact Discharge method, and ±15kV using the Human Body Model.
A proprietary low-dropout transmitter output stage enables true RS-232 performance from a +3.0V to+5.5V supply with a dual charge pump. The charge pump requires only four small 0.1F capacitors for operation from a +3.3V supply. The MAX3387E is capable of running at data rates up to 250kbps while maintaining RS-232 compliant output levels.
The MAX3387E has a unique VL pin that allows interoperation in mixed-logic voltage systems. Both input and output logic levels are pin programmable through the VL pin. The MAX3387E is available in a space-saving TSSOP package.
MAX3387E Data Sheet
