Product Summary

The MAX3243 device consists of three line drivers, five line receivers, and a dual charge-pump circuit with ±15-kV ESD 

protection pin-to-pin (serial-port connection pins, including GND). The device meets the requirements of TIA/EIA-232-F and 

provides the electrical interface between an asynchronous communication controller and the serial-port connector. This 

combination of drivers and receivers matches that needed for the typical serial port used in an IBM PC/AT, or compatible. 

The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. In addition, the device

 includes an always-active noninverting output (ROUT2B), which allows applications using the ring indicator to transmit data 

while the device is powered down. The device operates at data signaling rates up to 250 kbit/s and a maximum of 30-V/μs 

driver output slew rate.

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
MAX3243IDB
MAX3243IDB
Texas Instruments
RS-232 Interface IC 3-5.5V MultiCh Line Driver/Receiver
Data Sheet
0-1: $1.55
1-25: $1.20
25-100: $1.09
100-250: $0.79
MAX3243IDBE4
MAX3243IDBE4
Texas Instruments
RS-232 Interface IC 3-5.5V MultiCh Line Driver/Receiver
Data Sheet
0-1: $1.26
1-25: $1.01
25-100: $0.92
100-250: $0.79
MAX3243IDBR
MAX3243IDBR
Texas Instruments
RS-232 Interface IC RS232
Data Sheet
0-1: $1.09
1-25: $0.88
25-100: $0.80
100-250: $0.72
MAX3243IDBRE4
MAX3243IDBRE4
Texas Instruments
RS-232 Interface IC 3-5.5V MultiCh Line Driver/Receiver
Data Sheet
0-1430: $0.55
1430-2000: $0.52
2000-5000: $0.50
5000-10000: $0.48
MAX3243IDBRG4
MAX3243IDBRG4
Texas Instruments
RS-232 Interface IC 3-5.5V MultiCh Line Driver/Receiver
Data Sheet
0-1430: $0.55
1430-2000: $0.52
2000-5000: $0.50
5000-10000: $0.48
MAX3243IDBG4
MAX3243IDBG4
Texas Instruments
RS-232 Interface IC 3-5.5V Multich RS- 232 Line Drvr/Rcvr
Data Sheet
0-1: $1.26
1-25: $1.01
25-100: $0.92
100-250: $0.79