UART

UART stands for Universal Asynchronous Receiver-Transmitter. UART is a type of serial communication interface designed to transmit and receive data via a data bus. It allows two devices, such as computers, to carry out data transmission over a wired connection. UARTs convert incoming and outgoing data bytes into a serial bit stream. Asynchronous is a type of serial communication where the interfaces at each end are not synchronised by a common clock signal.

These particular UART devices are stand-alone integrated circuits (ICs). However, you can also find UARTs within microcontrollers (MCUs), as they only require two wires for communication.

UART ICs (integrated circuits) are semiconductor devices which can be integrated into your electronics designs to enable UART communication. UART is a popular method of communication in electronics projects. It enables computer hardware to communicate with other modems and serial devices.

When choosing a UART IC, ensure that it meets the requirements of the modem transmission rate.

What does a UART consist of?

One side of the UART feature around 8 data lines and the control pins. The other side of the UART has two serial wires, the Transmission (TX) and the Receiving (RX).

Where is UART used?

  • Microcontroller based devices
  • GPS receivers
  • Bluetooth devices
  • Modems
  • Wireless communications

Communication Standards

UARTs may feature a communication standard which defines the signals between devices. These standards include RS-232, RS-422 and RS-485.

What is baud rate?

UART baud rate is the speed at which the data is transferred which is given in bits per second (bit/s or bps). The devices that you are communicating between should both have the same baud rate.


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Description Prix Number of Channels per Chip Standard Supported Transmit FIFO Receive FIFO Maximum Data Rate Transmitter and Receiver FIFO Counter Mounting Type Package Type Pin Count Typical Operating Supply Voltage Dimensions Length Width Height
N° de stock RS 913-4228
Référence fabricantST16C2550IQ48-F
MarqueMaxLinear
4,176 €
Each (In a Tray of 250)
Unité
2 RS232, RS485 16B 16B 4Mbit/s Yes Surface Mount TQFP 48 2.97 → 5.5 V 7.1 x 7.1 x 1.05mm - - -
N° de stock RS 686-5890
Référence fabricantST16C2550IQ48-F
MarqueMaxLinear
7,91 €
Each
Unité
2 RS232, RS485 16B 16B 4Mbit/s Yes Surface Mount TQFP 48 2.97 → 5.5 V 7.1 x 7.1 x 1.05mm - - -
N° de stock RS 913-4225
Référence fabricantST16C2550CQ48-F
MarqueMaxLinear
4,90 €
Each (In a Tray of 250)
Unité
2 RS232, RS485 16B 16B 4Mbit/s Yes Surface Mount TQFP 48 2.97 → 5.5 V 7.1 x 7.1 x 1.05mm - - -
N° de stock RS 686-6067
Référence fabricantXR88C681CJ-F
MarqueMaxLinear
6,79 €
Each
Unité
2 - - - 1Mbit/s - Surface Mount PLCC 44 5 V 16.66 x 16.66 x 3.68mm - - -
N° de stock RS 686-6055
Référence fabricantXR82C684CJ/44-F
MarqueMaxLinear
15,65 €
Each
Unité
4 - - - 1Mbit/s - Surface Mount PLCC 44 5 V 16.66 x 16.66 x 3.68mm - - -
N° de stock RS 686-5913
Référence fabricantST16C550CJ44-F
MarqueMaxLinear
4,22 €
Each
Unité
1 - 16B 16B 1.5Mbit/s Yes Surface Mount PLCC 44 2.97 → 5.5 V 16.66 x 16.66 x 3.68mm - - -
N° de stock RS 686-5957
Référence fabricantST16C554DIQ64-F
MarqueMaxLinear
10,13 €
Each
Unité
4 - 16B 16B 1.5Mbit/s Yes Surface Mount LQFP 64 2.97 → 5.5 V 10.1 x 10.1 x 1.45mm - - -
N° de stock RS 811-2971
Référence fabricantXR28V382IL32-F
MarqueMaxLinear
4,85 €
Each
Unité
2 IrDA, RS232, RS485 128B 128B 3Mbit/s Yes Surface Mount QFN 32 3.3 V 5 x 5 x 0.95mm - - -
N° de stock RS 913-4234
Référence fabricantST16C554DCQ64-F
MarqueMaxLinear
6,19 €
Each (In a Tray of 160)
Unité
4 - 16B 16B 1.5Mbit/s Yes Surface Mount LQFP 64 2.97 → 5.5 V 10.1 x 10.1 x 1.45mm - - -
N° de stock RS 913-4222
Référence fabricantST16C2552CJ44TR-F
MarqueMaxLinear
3,74 €
Each (On a Reel of 500)
Unité
2 RS232, RS485 16B 16B 4Mbit/s Yes Surface Mount PLCC 44 2.97 → 5.5 V 16.66 x 16.66 x 3.68mm - - -
N° de stock RS 686-5954
Référence fabricantST16C554DIJ68-F
MarqueMaxLinear
11,38 €
Each
Unité
4 - 16B 16B 1.5Mbit/s Yes Surface Mount PLCC 68 2.97 → 5.5 V 24.33 x 24.33 x 3.68mm - - -
N° de stock RS 686-6001
Référence fabricantXR16L788IQ-F
MarqueMaxLinear
33,81 €
Each
Unité
8 IrDA 64B 64B 6.25Mbit/s Yes Surface Mount PQFP 100 2.97 → 5.5 V 20.1 x 14.1 x 3.05mm - - -
N° de stock RS 913-4256
Référence fabricantXR16L788IQ-F
MarqueMaxLinear
29,815 €
Each (In a Tray of 66)
Unité
8 IrDA 64B 64B 6.25Mbit/s Yes Surface Mount PQFP 100 2.97 → 5.5 V 20.1 x 14.1 x 3.05mm - - -
N° de stock RS 686-5932
Référence fabricantST16C550IQ48-F
MarqueMaxLinear
5,10 €
Each
Unité
1 - 16B 16B 1.5Mbit/s Yes Surface Mount TQFP 48 2.97 → 5.5 V 7.1 x 7.1 x 1.05mm - - -
N° de stock RS 847-2908
Référence fabricantXR16C850CM-F
MarqueMaxLinear
11,18 €
Each
Unité
1 IrDA, RS232, RS422, RS485 - - 2Mbit/s Yes Surface Mount TQFP 48 3.3 V, 5 V 7.1 x 7.1 x 1.05mm - - -
N° de stock RS 686-6005
Référence fabricantXR17D152CM-F
MarqueMaxLinear
19,08 €
Each
Unité
2 RS232, RS422, RS485 64B 64B 6.25Mbit/s Yes Surface Mount TQFP 100 5 V 14.1 x 14.1 x 1.05mm - - -
N° de stock RS 769-5605
Référence fabricantXR20M1170IG16-F
MarqueMaxLinear
3,86 €
Each (In a Pack of 2)
Unité
1 IrDA, RS232, RS422, RS485 64B 64B 16Mbit/s Yes Surface Mount TSSOP 16 1.6 → 3.6 V 5.1 x 4.5 x 0.95mm - - -
N° de stock RS 686-5888
Référence fabricantST16C2550CQ48-F
MarqueMaxLinear
5,90 €
Each
Unité
2 RS232, RS485 16B 16B 4Mbit/s Yes Surface Mount TQFP 48 2.97 → 5.5 V 7.1 x 7.1 x 1.05mm - - -
N° de stock RS 913-4244
Référence fabricantXR16L788CQ-F
MarqueMaxLinear
20,52 €
Each (In a Tray of 66)
Unité
8 IrDA 64B 64B 6.25Mbit/s Yes Surface Mount PQFP 100 2.97 → 5.5 V 20.1 x 14.1 x 3.05mm - - -
N° de stock RS 913-4301
Référence fabricantST16C654IQ64-F
MarqueMaxLinear
10,723 €
Each (In a Tray of 160)
Unité
4 IrDA, RS232, RS422, RS485 64B 64B 1.5Mbit/s - Surface Mount LQFP 64 2.97 → 5.5 V 10 x 10 x 1.4mm - - -