MAX13234E

The MAX13234E-MAX13237E are available in spacesaving TQFN and TSSOP packages and operate over the -40°C to +85°C extended temperature range. The MAX13234E/MAX13235E have two receivers and two transmitters, while the MAX13236E/MAX13237E have a single receiver and transmitter. The transmitters have a low-dropout transmitter output stage, delivering true RS-232 performance from a +3V to +5.5V supply based on a dual charge pump. The MAX13234E-MAX13237E are +3V to +5.5V powered EIA/TIA-232 and V.28/V.24 communications interfaces with high data-rate capabilities (up to 3Mbps), a flexible logic voltage interface, and enhanced electrostatic discharge (ESD)protection. All receiver inputs and transmitter outputs are protected to ±15kV IEC 61000-4-2 Air Gap Discharge, ±8kV IEC 61000-4-2 Contact Discharge, and ±15kV Human Body Model. The charge pump requires only four small 0.1F capacitors for operation from a +3.3V supply. These devices automatically enter a low-power shutdown mode when the RS-232 cable is disconnected or the devices driving the transmitter and receiver inputs are inactive for more than 30s. All devices achieve a 1A supply current using Maxim's AutoShutdown Plusfeature.

The features of MAX13234E can be summarized as (1)data rate up to 3Mbps; (2)low-voltage logic interface; (3)+3V to +5.5V supply voltage; (4)autoshutdown plus; (5)1A shutdown current.

The absolute maximum ratings of MAX13234E are (1)VCC: -0.3V to +6.0V; (2)VL: -0.3V to +6.0V; (3)V+: -0.3V to +7.0V; (4)V-: +0.3V to -7.0V; (5)(V+)+ |(V-)|: +13.0V; (6)T_IN, FORCEOFF, FORCEON: -0.3V to (VL + 0.3V); (7)R_IN: ±25V; (8)T_OUT: ±13.2V; (9)R_OUT, READY: -0.3V to (VL + 0.3V); (10)short-circuit duration T_OUT to GND: Continuous; (11)continuous power dissipation (TA = +70°C)16-Pin TQFN (derate 20.8mW/°C above +70°C): 1666mW/ 20-Pn TSSOP (derate 10.9mW/°C above +70°C): 879mW/ 20-Pin TQFN (derate 21.3mW/°C above +70°C): 1702mW; (12)junction-to-case thermal resistance (JC)(Note 1)16-Pin TQFN: 2°C/W/ 20-Pin TSSOP: 20°C/W/ 20-Pin TQFN: 2°C/W; (13)junction-to-ambient thermal resistance (JA)(Note 1)16-Pin TQFN: 30°C/W/ 20-Pin TSSOP: 73°C/W/ 20-Pin TQFN: 29°C/W; (14)MAX operating temperature range MAX1323x operating temperature range: -40°C to +85°C/ MAX1323x operating temperature range: -40°C to +105°C; (15)storage temperature range: -65°C to +160°C; (16)lead temperature (soldering, 10s): +300°C.