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 Price 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
RS庫存編號 162-8368
製造零件編號TIR1000PSR
HK$7.067
個 (在毎卷:2000)
單位
- - - - - - Surface Mount SOIC 8 - 6.5 x 5.6 x 1.85mm - - -
RS庫存編號 178-9093
製造零件編號TL16C550CFNR
HK$56.905
毎管:26 個
單位
1 - 16B 16B 1MBd Yes Surface Mount PLCC 44 3 → 5.25 V 16.59 x 16.59 x 4.06mm 16.59mm 16.59mm 4.06mm
RS庫存編號 162-7083
製造零件編號TL16C550CPTR
HK$23.363
個 (在毎卷:1000)
單位
1 - 16B 16B 1MBd Yes Surface Mount LQFP 48 3 → 5.25 V 7 x 7 x 1.4mm - - -
RS庫存編號 121-8491
製造零件編號TL16C452FN
HK$60.375
毎管:18 個
單位
- - - - - - - - - - - - - -
RS庫存編號 162-4339
製造零件編號TL16C450FN
HK$34.546
毎管:26 個
單位
1 - - - 0.256Mbit/s - Surface Mount PLCC 44 5 V 16.59 x 16.59 x 4.06mm - - -
RS庫存編號 182-2570
製造零件編號TL16C452FN
HK$66.84
單位
2 - - - 0.256Mbit/s - Surface Mount PLCC 68 5 V 24.23 x 24.23 x 4.06mm - - -
RS庫存編號 814-4032
製造零件編號TIR1000PSR
HK$14.91
Each (On a Tape of 5)
單位
- - - - - - Surface Mount SOIC 8 - 6.5 x 5.6 x 1.85mm - - -
RS庫存編號 662-3921
製造零件編號TL16C550CPTR
HK$43.754
/個 (每包:5個)
單位
1 - 16B 16B 1MBd Yes Surface Mount LQFP 48 3 → 5.25 V 7 x 7 x 1.4mm - - -
RS庫存編號 162-7082
製造零件編號TL16C452FNR
HK$44.835
個 (在毎卷:250)
單位
2 - - - 0.256Mbit/s - Surface Mount PLCC 68 5 V 24.23 x 24.23 x 4.06mm - - -
RS庫存編號 346-6863
製造零件編號TL16C550CPT
HK$52.56
單位
1 - 16B 16B 1MBd Yes Surface Mount LQFP 48 3 → 5.25 V 7 x 7 x 1.4mm - - -
RS庫存編號 662-3915
製造零件編號TL16C550CFNR
HK$51.398
/個 (每包:5個)
單位
1 - 16B 16B 1MBd Yes Surface Mount PLCC 44 3 → 5.25 V 16.59 x 16.59 x 4.06mm - - -
RS庫存編號 662-3911
製造零件編號TL16C452FNR
HK$62.98
單位
2 - - - 0.256Mbit/s - Surface Mount PLCC 68 5 V 24.23 x 24.23 x 4.06mm - - -
RS庫存編號 182-2508
製造零件編號TL16C450FN
HK$43.85
單位
1 - - - 0.256Mbit/s - Surface Mount PLCC 44 5 V 16.59 x 16.59 x 4.06mm - - -