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 686-5904
Référence fabricantST16C2552CJ44TR-F
MarqueMaxLinear
5,43 €
Each
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 769-5560
Référence fabricantST16C654DIQ64-F
MarqueMaxLinear
13,51 €
Each
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 - - -
N° de stock RS 769-5567
Référence fabricantST16C654IQ64-F
MarqueMaxLinear
13,51 €
Each
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 - - -
N° de stock RS 173-0790
Référence fabricantXR20M1170IG16-F
MarqueEXAR
2,905 €
Each (In a Tube of 95)
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 622-7964
Référence fabricantMAX3100CEE+
4,41 €
Each
Unité
1 IrDA 16B 16B 0.23MBd - Surface Mount QSOP 16 2.7 → 5.5 V 4.98 x 3.99 x 1.55mm - - -
N° de stock RS 757-0023
Référence fabricantFT201XS-R
MarqueFTDI Chip
1,765 €
Each (In a Pack of 2)
Unité
1 SIE, UART 512B 512B 3.4Mbit/s Yes Surface Mount SSOP 16 5 V 0.197 x 0.157 x 0.059in - - -
N° de stock RS 686-5926
Référence fabricantST16C550CQ48-F
MarqueMaxLinear
4,25 €
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 189-7772
Référence fabricantMAX3100EEE+
5,178 €
Each (In a Tube of 100)
Unité
1 IrDA 16B 16B 0.23MBd - Surface Mount QSOP 16 2.7 → 5.5 V 4.98 x 3.99 x 1.55mm - - -
N° de stock RS 757-0051
Référence fabricantFT240XQ-R
MarqueFTDI Chip
1,87 €
Each (In a Pack of 2)
Unité
1 SIE 512B 512B 1Mbit/s Yes Surface Mount QFN 24 5 V 4 x 4 x 0.75mm - - -
Nouveau
N° de stock RS 216-8422
Référence fabricantFT201XS-U
MarqueFTDI Chip
1,744 €
Each (In a Pack of 5)
Unité
- - 512B 512B 3.4Mbps - - SSOP 16 +3.3 → 5.25 V - - - -
N° de stock RS 190-1333
Référence fabricantMAX3107EAG+
5,765 €
Each (In a Pack of 2)
Unité
1 RS232, RS485 - - 24Mbps Yes Surface Mount SSOP 24 2.35 → 3.6 V 8.33 x 5.38 x 1.78mm - - -
N° de stock RS 786-1001
Référence fabricantMAX3140CEI+
7,02 €
Each
Unité
1 RS422, RS485 - - 230kBd - Surface Mount QSOP 28 4.75 → 5.25 V 9.98 x 3.99 x 1.5mm - - -
N° de stock RS 913-4238
Référence fabricantST16C554DIQ64-F
MarqueMaxLinear
7,14 €
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 - - -
Nouveau
N° de stock RS 216-8418
Référence fabricantFT200XD-T
MarqueFTDI Chip
1,70 €
Each (In a Pack of 5)
Unité
- - 512B 512B 3.4Mbps - - DFN 10 +3.3 → 5.25 V - - - -
N° de stock RS 913-4250
Référence fabricantXR82C684CJ/44-F
MarqueMaxLinear
13,214 €
Each (In a Tube of 27)
Unité
4 - - - 1Mbit/s - Surface Mount PLCC 44 5 V 16.66 x 16.66 x 3.68mm - - -
N° de stock RS 189-7773
Référence fabricantMAX3107EAG+
5,015 €
Each (In a Tube of 58)
Unité
1 RS232, RS485 - - 24Mbps Yes Surface Mount SSOP 24 2.35 → 3.6 V 8.33 x 5.38 x 1.78mm - - -
N° de stock RS 732-9140
Référence fabricantMAX3100CPD+
6,06 €
Each
Unité
1 IrDA 16B 16B 0.23MBd - Through Hole PDIP 14 3.3 V, 5 V 19.43 x 7.87 x 4.45mm - - -
N° de stock RS 162-4339
Référence fabricantTL16C450FN
3,314 €
Each (In a Tube of 26)
Unité
1 - - - 0.256Mbit/s - Surface Mount PLCC 44 5 V 16.59 x 16.59 x 4.06mm - - -
N° de stock RS 700-4374
Référence fabricantXR17V358IB176-F
MarqueEXAR
14,97 €
Each
Unité
8 IrDA 256B 256B 25Mbit/s Yes Surface Mount FBGA 176 3.3 V 13.1 x 13.1 x 1.15mm - - -
N° de stock RS 686-5948
Référence fabricantST16C554CQ64-F
MarqueMaxLinear
7,89 €
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 - - -