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| Part Number | SN74ALS232BFNR | SN74ALS232BFN | 
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | 
| Product Status | Obsolete | Obsolete | 
| Memory Size | 64 (16 x 4) | 64 (16 x 4) | 
| Function | Asynchronous | Asynchronous | 
| Data Rate | 40MHz | 40MHz | 
| Access Time | 30ns | 30ns | 
| Voltage - Supply | 4.5 V ~ 5.5 V | 4.5 V ~ 5.5 V | 
| Current - Supply (Max) | 125mA | 125mA | 
| Bus Directional | Uni-Directional | Uni-Directional | 
| Expansion Type | Width | Width | 
| Programmable Flags Support | No | No | 
| Retransmit Capability | No | No | 
| FWFT Support | No | No | 
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 20-LCC (J-Lead) | 20-LCC (J-Lead) | 
| Supplier Device Package | 20-PLCC (9x9) | 20-PLCC (9x9) |