| Part Number | SC26C92C1B,551 | SC26C92C1B,557 | 
|---|---|---|
| Manufacturer | NXP USA Inc. | NXP USA Inc. | 
| Category | Interface - UARTs (Universal Asynchronous Receiver Transmitter) | Interface - UARTs (Universal Asynchronous Receiver Transmitter) | 
|   |   | |
| Product Status | Obsolete | Obsolete | 
| Features | Configurable GPIO, Internal Oscillator, Timer/Counter | Configurable GPIO, Internal Oscillator, Timer/Counter | 
| Number of Channels | 2, DUART | 2, DUART | 
| FIFO's | 8 Byte | 8 Byte | 
| Protocol | - | - | 
| Data Rate (Max) | 1Mbps | 1Mbps | 
| Voltage - Supply | 5V | 5V | 
| With Auto Flow Control | Yes | Yes | 
| With IrDA Encoder/Decoder | - | - | 
| With False Start Bit Detection | Yes | Yes | 
| With Modem Control | Yes | Yes | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 44-QFP | 44-QFP | 
| Supplier Device Package | 44-PQFP (10x10) | 44-PQFP (10x10) |