Product Summary

The MAX3250EAI is a 3.0V to 5.5V powered, ±50V isolated EIA/TIA-232 and V.28/V.24 communications interface with high data-rate capabilities. The MAX3250EAI is a dual die part that operates with up to ±50V difference between the RS-232 side and the logic side (ISOCOM to GND). This makes the device ideal for operation in noisy conditions with high common-mode voltages. This feature prevents damage to the MAX3250EAI if RS-232 lines are inadvertently short-circuited to a +24V or ±48V power bus. The applications of the MAX3250EAI include: Industrial Control, Programmable Logic Controller, Point-of-Sale Equipment, PC-to-Router Connections, Diagnostic Ports, Telecom Equipment.

Parametrics

MAX3250EAI absolute maximum ratings: (1)VCC: -0.3V to +6V; (2)ISOCOM: ±80V; (3)ISOVCC to ISOCOM: -0.3V to +6V; (4)V+ to ISOCOM: -0.3V to +7V; (5)V- to ISOCOM: +0.3V to -7V; (6)V+ + |V-|: 13V; (7)Input Voltages T_IN, SHDN: -0.3V to +6V; R_IN to ISOCOM: ±25V; (8)Output Voltages T_OUT to ISOCOM: ±13.2V; R_OUT: -0.3V to (VCC + 0.3V); FAULT: -0.3V to +6V; (9)Operating Temperature Ranges: -40℃ to +85℃; (10)Storage Temperature Range: -65℃ to +150℃; (11)Lead Temperature (soldering, 10s): +300℃; (12)Continuous Power Dissipation (TA = +70℃) 28-Pin SSOP (derate 9.5mW/℃ above +70℃): 762mW.

Features

MAX3250EAI features: (1)±50V Isolation; (2)20μA Supply Current in Shutdown; (3)250kbps Guaranteed Data Rate; (4)FAULT Output; (5)High-Impedance Transmitter and Receiver Outputs in Shutdown; (6)Space-Saving SSOP Package; (7)Inductorless/Transformerless Design Simplifies EMI Compliance; (8)Low-Cost Replacement for Opto-Isolated Transceivers; (9)Meets EIA/TIA-232 Specifications Down to 3.0V.

Diagrams

MAX3250EAI pin configuration

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
MAX3250EAI-T
MAX3250EAI-T

Maxim Integrated Products

RS-232 Interface IC

Data Sheet

Negotiable 
MAX3250EAI+T
MAX3250EAI+T

Maxim Integrated Products

RS-232 Interface IC 3-5.5V 250kbps Transceiver

Data Sheet

0-1666: $3.26
1666-2000: $3.26
MAX3250EAI+
MAX3250EAI+

Maxim Integrated Products

RS-232 Interface IC 3-5.5V 250kbps Transceiver

Data Sheet

0-1: $7.97
1-25: $5.35
25-50: $3.88
50-100: $3.83
MAX3250EAI
MAX3250EAI

Maxim Integrated Products

RS-232 Interface IC

Data Sheet

Negotiable