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 757-0010
製造零件編號FT230XS-R
BrandFTDI Chip
TWD75.50
/個 (每包:2個)
單位
1 RS232, RS422, RS485, SIE, UART 512B 512B 3MBd Yes Surface Mount SSOP 16 5 V 0.197 x 0.157 x 0.059in - - -
RS庫存編號 923-1581
製造零件編號FT230XS-R
BrandFTDI Chip
TWD51.90
個 (在毎卷:3000)
單位
1 RS232, RS422, RS485, SIE, UART 512B 512B 3MBd Yes Surface Mount SSOP 16 5 V 0.197 x 0.157 x 0.059in - - -
RS庫存編號 170-9074
製造零件編號FT220XS-R
BrandFTDI Chip
TWD53.60
個 (在毎卷:3000)
單位
1 SIE, UART 512B 512B 500kbit/s Yes Surface Mount SSOP 16 5 V 0.197 x 0.157 x 0.059in - - -
RS庫存編號 757-0026
製造零件編號FT230XQ-R
BrandFTDI Chip
TWD72.50
/個 (每包:2個)
單位
1 RS232, RS422, RS485, SIE, UART 512B 512B 3MBd Yes Surface Mount QFN 16 5 V 4 x 4 x 0.75mm - - -
RS庫存編號 923-1597
製造零件編號FT230XQ-R
BrandFTDI Chip
TWD51.90
個 (在毎卷:5000)
單位
1 RS232, RS422, RS485, SIE, UART 512B 512B 3MBd Yes Surface Mount QFN 16 5 V 4 x 4 x 0.75mm - - -
RS庫存編號 757-0014
製造零件編號FT220XS-R
BrandFTDI Chip
TWD72.50
/個 (每包:2個)
單位
1 SIE, UART 512B 512B 500kbit/s Yes Surface Mount SSOP 16 5 V 0.197 x 0.157 x 0.059in - - -
RS庫存編號 687-7720
製造零件編號FT2232HL
BrandFTDI Chip
TWD217.00
單位
2 RS232, RS422, RS485 - - 480Mbit/s - Surface Mount LQFP 64 - 10 x 10 x 1.4mm - - -
RS庫存編號 170-9070
製造零件編號FT2232HL
BrandFTDI Chip
TWD180.70
個 (在毎卷:1000)
單位
2 RS232, RS422, RS485 - - 480Mbit/s - Surface Mount LQFP 64 - 10 x 10 x 1.4mm - - -
RS庫存編號 170-4453
製造零件編號ST16C554DIJ68-F
BrandEXAR
TWD365.90
毎管:19 個
單位
4 - 16B 16B 1.5Mbit/s Yes Surface Mount PLCC 68 2.97 → 5.5 V 24.33 x 24.33 x 3.68mm - - -
RS庫存編號 170-4449
製造零件編號ST16C554DCJ68-F
BrandEXAR
TWD282.50
毎管:19 個
單位
4 - 16B 16B 1.5Mbit/s Yes Surface Mount PLCC 68 2.97 → 5.5 V 24.33 x 24.33 x 3.68mm - - -
RS庫存編號 686-5941
製造零件編號ST16C554DCJ68-F
BrandMaxLinear
TWD347.00
單位
4 - 16B 16B 1.5Mbit/s Yes Surface Mount PLCC 68 2.97 → 5.5 V 24.33 x 24.33 x 3.68mm - - -
RS庫存編號 686-5954
製造零件編號ST16C554DIJ68-F
BrandMaxLinear
TWD407.00
單位
4 - 16B 16B 1.5Mbit/s Yes Surface Mount PLCC 68 2.97 → 5.5 V 24.33 x 24.33 x 3.68mm - - -
RS庫存編號 816-0239
製造零件編號SC16IS762IPW,112
BrandNXP
TWD212.70
/個 (每包:3個)
單位
2 IrDA, UART - - 5Mbit/s Yes Surface Mount TSSOP 28 2.5 V, 3.3 V 9.8 x 4.5 x 0.95mm - - -
RS庫存編號 124-2422
製造零件編號SC16IS762IPW,112
BrandNXP
TWD212.20
毎管:51 個
單位
2 IrDA, UART - - 5Mbit/s Yes Surface Mount TSSOP 28 2.5 V, 3.3 V 9.8 x 4.5 x 0.95mm - - -
RS庫存編號 757-0032
製造零件編號FT231XS-R
BrandFTDI Chip
TWD82.50
/個 (每包:2個)
單位
1 RS232, RS422, RS485, SIE, UART 512B 512B 3MBd Yes Surface Mount SSOP 20 5 V 0.344 x 0.157 x 0.059in - - -
RS庫存編號 686-5995
製造零件編號XR16L788CQ-F
BrandMaxLinear
TWD1,330.00
單位
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 - - -
RS庫存編號 913-4244
製造零件編號XR16L788CQ-F
BrandMaxLinear
TWD1,171.80
Each (In a Tray of 66)
單位
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 - - -
RS庫存編號 923-1607
製造零件編號FT231XS-R
BrandFTDI Chip
TWD53.20
個 (在毎卷:2000)
單位
1 RS232, RS422, RS485, SIE, UART 512B 512B 3MBd Yes Surface Mount SSOP 20 5 V 0.344 x 0.157 x 0.059in - - -
RS庫存編號 888-8722
製造零件編號FT231XS-U
BrandFTDI Chip
TWD54.60
/個 (每包:1160個)
單位
- - - - - - Surface Mount SSOP 20 - 8.74 x 3.99 x 1.5mm - - -
RS庫存編號 913-4231
製造零件編號ST16C550CJ44-F
BrandMaxLinear
TWD116.30
毎管:27 個
單位
1 RS232, RS422, RS485 16B 16B 1.5Mbit/s - Surface Mount PLCC 44 2.97 → 5.5 V 16.66 x 16.66 x 4.57mm - - -