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| Part Number | MAX3221ECPWG4 | MAX3221EIPWG4 | MAX3222ECPWG4 | MAX3221ECPWE4 | 
|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | 
| Product Status | Obsolete | Obsolete | Last Time Buy | Obsolete | 
| Type | Transceiver | Transceiver | Transceiver | Transceiver | 
| Protocol | RS232 | RS232 | RS232 | RS232 | 
| Number of Drivers/Receivers | 1/1 | 1/1 | 2/2 | 1/1 | 
| Duplex | Full | Full | Full | Full | 
| Receiver Hysteresis | 500 mV | 500 mV | 300 mV | 500 mV | 
| Data Rate | 250kbps | 250kbps | 500kbps | 250kbps | 
| Voltage - Supply | 3V ~ 5.5V | 3V ~ 5.5V | 3V ~ 5.5V | 3V ~ 5.5V | 
| Operating Temperature | 0°C ~ 70°C | -40°C ~ 85°C | 0°C ~ 70°C | 0°C ~ 70°C | 
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | 
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) | 16-TSSOP (0.173", 4.40mm Width) | 20-TSSOP (0.173", 4.40mm Width) | 16-TSSOP (0.173", 4.40mm Width) | 
| Supplier Device Package | 16-TSSOP | 16-TSSOP | 20-TSSOP | 16-TSSOP |