Point-of-Sale (POS) Terminals

Maxim > Solutions > Point-of-Sale (POS) Terminals

RS-232

Maxim offers RS232 solutions for POS terminals with enhanced features for best signal integrity and robustness.

Enhanced ESD Protection
- ±15kV, per Human Body Model
- ±15kV, per Airgap Discharge IEC 1000-4-2
- ±8kV, per Contact Discharge IEC 1000-4-2
True RS-232 Signal Levels with Single 3V or 5V Supplies
Integrated Charge Pumps Reduce Board Space and Design Complexity
Complete Serial-Port Transceiver (Three Drivers, Five Receivers)

DATA SHEETS

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Title / Parts

Key Advantages

QV PDF

±15kV ESD-Protected, 1µA, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus
MAX3224E, MAX3225E, MAX3226E, MAX3227E, MAX3244E, MAX3245E

QV PDF

±15kV ESD-Protected, 1µA, 3.0V to 5.5V, 250kbps, RS-232 Transceivers with AutoShutdown
MAX3221E, MAX3223E, MAX3243E

QV PDF

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers
MAX3222E, MAX3232E, MAX3237E, MAX3241E, MAX3246E

QV PDF

±15kV ESD-Protected, EMC Compliant, 230kbps RS-232 Serial Port for Motherboards/Desktop PCs
MAX3185

Key Specifications: RS-232 Line Driver/Receivers
Part Number	Supply Voltage (V)	Number of Tx	Number of Rx	Data Rate (kbps)	Typ. I_CC Current (mA)	Internal Charge Pump	Number of Ext. Caps	Nom. Cap. Value (µF)	ESD Protection (±kV)	Number of Rx Active in Shutdown	Package
MAX3246E	3.3 5	3	5	250	0.3	Yes	4	0.1	15	5	UCSP/26
MAX3222E	3.3 5	2	2	250	0.3	Yes	4	0.1	15	2	PDIP/18 SOIC/18 SSOP/20 THIN QFN/20 TSSOP/20
MAX3232E	3.3 5	2	2	250	0.3	Yes	4	0.1	15	0	PDIP/16 SOIC/16 SSOP/16 THIN QFN/16 TSSOP/16 TSSOP/20
MAX3237E	3.3 5	5	3	1,000	0.3	Yes	4	0.1	15	3	SSOP/28
MAX3241E	3.3 5	3	5	250	0.3	Yes	4	0.1	15	5	SOIC/28 SSOP/28 THIN QFN/32 TSSOP/28
MAX3224E	3.3 5	2	2	250	0.3	Yes	4	0.1	15	2	PDIP/20 SSOP/20 THIN QFN/20 TSSOP/20
MAX3225E	3.3 5	2	2	1,000	0.3	Yes	4	0.1	15	2	PDIP/20 SSOP/20 THIN QFN/20 TSSOP/20
MAX3226E	3.3 5	1	1	250	0.3	Yes	4	0.1	15	2	SSOP/16 THIN QFN/16 TSSOP/16
MAX3227E	3.3 5	1	1	1,000	0.3	Yes	4	0.1	15	2	SSOP/16 THIN QFN/16 TSSOP/16
MAX3244E	3.3 5	3	5	250	0.3	Yes	4	0.1	15	5	SOIC/28 SSOP/28 TSSOP/28
MAX3245E	3.3 5	3	5	1,000	0.3	Yes	4	0.1	15	5	SOIC/28 SSOP/28 THIN QFN/36 TSSOP/28
MAX3221E	3.3 5	1	1	250	0.3	Yes	4	0.1	15	1	SSOP/16 THIN QFN/16 TSSOP/16
MAX3223E	3.3 5	2	2	250	0.3	Yes	4	0.1	15	2	PDIP/20 SSOP/20 THIN QFN/20 TSSOP/20
MAX3243E	3.3 5	3	5	250	0.3	Yes	4	0.1	15	1	SOIC/28 SSOP/28 THIN QFN/32 TSSOP/28
MAX3185	12 5	3	5	230	0.38	No	0	-	15	-	SOIC/20 SSOP/20
See All RS-232 Line Driver/Receivers (155)