What are UARTs (Universal Asynchronous Receiver Transmitter) ?
UARTs (Universal Asynchronous Receiver Transmitter) are integrated circuits that enable asynchronous serial communication by converting parallel data into a serial format for transmission. They are widely used in applications such as wireless and RF signal chains, new product design, and maintenance of electronic systems. Important specifications for selection include Data Rate (Max), which affects the speed of data transfer; Protocol, which determines the communication standard; and Voltage, which ensures compatibility with the power supply. Procurement teams should validate lifecycle status and consider alternate-source options to mitigate sourcing risks.
Parts in this category
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| Part & Mfr | AEC Qualified | Automotive Grade | Clock Rate | Data Format | Data Rate | Data Rate (Max) | FIFOs | Features | Height | Industrial Grade | Lead Spacing | Lead Style | Length | Medical Grade | Military Grade | Mounting Style | Mounting Type | Number of Channels | Operating Temperature | Operating Temperature Range | Operating Voltage | Protocol | SVHC Present | Storage Temperature | Supplier Device Package | Supplier Package | Supply Voltage | Tape & Reel | Type | Voltage | Voltage Supply | Width | With Auto Flow Control | With False Start Bit Detection | With IrDA Encoder | With Modem Control | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments
|
526
|
$3.69
|
- | - | - | - | - | 1.5 Mbps | 16 Byte | Internal Oscillator | - | - | 5 mm | - | - | - | - | - | Surface Mount | 2 | - | -40°C to 85°C | - | - | - | - | 32-VQFN (5x5) | 32-VQFN (5x5) | - | - | - | 1.8V to 5V | - | - | Yes | Yes | - | Yes | |
Texas Instruments
|
520
|
$4.25
|
- | - | - | - | - | 1.5 Mbps | 16 Byte | Internal Oscillator; Programmable Auto-RTS and Auto-CTS; With False Start Bit Detection; With Auto Flow Control; With Modem Control | - | - | 5 mm | - | - | - | - | - | Surface Mount | 2 | - | -40°C to 85°C | - | - | - | - | 32-VQFN (5x5) | 32-VQFN (5x5) | - | - | - | 1.8V to 5V | - | - | Yes | Yes | - | Yes | |
Texas Instruments
|
452
|
$0.99
|
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | °C ~ °C | - | - | - | No | - | - | - | - | - | - | - | - | |
Texas Instruments
|
391
|
Price on request
|
- | - | - | - | - | 4Mbps | - | Timer/Counter | - | - | - | - | - | - | - | - | Surface Mount | 8, OCTART | - | - | - | IrDA | - | - | 80-LQFP (12x12) | - | - | - | - | 2.97V ~ 3.63V, 4.5V ~ 5.5V | - | - | No | Yes | Yes | Yes | |
|
Maxlinear
|
384
|
$0.99
|
- | - | - | - | 1.5 Mbps | 1.5Mbps | 16 Byte | Timer/Counter; Yes | 1.05 mm | - | - | - | 7.1 mm | - | - | Smd/Smt | Surface Mount | 1 | - | - | - | - | - | - | 48-TQFP (7x7) | - | - | - | Uart With 16 - Byte Fifos | 2.97 V ~ 5.5 V | - | 7.1 mm | - | Yes | - | Yes | |
Texas Instruments
|
350
|
Price on request
|
- | - | - | - | - | 1Mbps | 16 Byte | - | - | - | - | - | - | - | - | - | Surface Mount | 1, UART | - | - | - | - | - | - | 48-TQFP (7x7) | - | - | - | - | 2.25V ~ 5.5V | - | - | Yes | Yes | - | Yes | |
Texas Instruments
|
340
|
$4.55
|
- | - | - | - | - | 3 Mbps | 64 Byte | - | - | - | 7 mm | - | - | - | - | - | Surface Mount | 2 | -40°C to +105°C | - | - | RS485 | - | - | 48-TQFP (7x7) | - | - | - | - | 1.62V ~ 5.5V | - | - | Yes | Yes | Yes | Yes | |
Maxlinear
|
333
|
$0.99
|
- | - | - | - | - | 6.25Mbps | 64 Byte | Internal Oscillator, Timer/Counter | - | - | 0.5 mm | - | - | - | - | - | Surface Mount | 4, QUART | - | - | - | RS485 | - | °C ~ °C | 64-LQFP (10x10) | - | - | No | - | 2.97V ~ 5.5V | - | - | Yes | Yes | Yes | Yes | |
Maxlinear
|
325
|
$0.99
|
- | - | - | - | - | 4Mbps | 16 Byte | Configurable GPIO, Internal Oscillator, Timer/Counter | - | - | 16.59 mm | - | - | - | - | - | Surface Mount | 2 | - | - | - | RS232, RS485 | - | - | 44-PLCC (16.59x16.59) | - | - | - | - | 2.97V ~ 5.5V | 2.97V ~ 5.5V | - | - | Yes | - | Yes | |
Texas Instruments
|
318
|
$7.92
|
No | No | - | - | - | 1Mbps | 16 Byte | Printer Port; With False Start Bit Detection; With Modem Control | - | No | 24.23 mm | - | - | No | No | - | Surface Mount | 2 | - | - | - | - | - | - | 68-PLCC (24.23x24.23) | - | - | - | - | 4.75V ~ 5.25V | - | - | - | Yes | - | Yes | |
NXP Semiconductors
|
293
|
$0.99
|
- | - | - | - | - | 3Mbps | 16 Byte | - | - | - | - | - | - | - | - | - | Surface Mount | 1, UART | Industrial | - | - | - | - | °C ~ °C | 48-LQFP (7x7) | - | - | No | - | 2.5V, 3.3V, 5V | - | - | Yes | Yes | - | Yes | |
|
Maxlinear
|
152
|
$0.99
|
- | - | - | - | - | 6.25Mbps | 64 Byte | - | - | - | - | - | - | - | - | - | Surface Mount | 2 | - | - | - | RS485 | - | °C ~ °C | 100-TQFP (14x14) | - | - | No | - | 3.3V, 5V | - | - | Yes | Yes | Yes | - | |
NXP Semiconductors
|
137
|
$0.99
|
No | No | - | - | - | 1Mbps | 8 Byte | Configurable GPIO, Internal Oscillator, Timer/Counter | - | No | - | - | - | No | No | - | Surface Mount | 2 | - | - | - | - | - | °C ~ °C | 44-PLCC (16.59x16.59) | - | - | No | - | 5V | - | - | Yes | Yes | - | Yes | |
Maxlinear
|
120
|
$0.99
|
- | - | - | - | - | 2Mbps | 128 Byte | Internal Oscillator, Timer/Counter | - | - | - | - | - | - | - | SMD/SMT | Surface Mount | 4 | - | - | - | RS232, RS485 | - | °C ~ °C | 64-LQFP (10x10) | LQFP | - | No | - | 2.97V ~ 5.5V | - | - | Yes | Yes | Yes | Yes | |
Maxlinear
|
120
|
$0.99
|
- | - | - | - | - | 2Mbps | 128 Byte | Internal Oscillator, Timer/Counter | - | - | 10 mm | - | - | - | - | - | Surface Mount | 4 | - | - | - | RS232, RS485 | - | - | 64-LQFP (10x10) | Tray | 2.97V ~ 5.5V | - | - | 2.97V ~ 5.5V | - | - | Yes | Yes | Yes | Yes | |
Texas Instruments
|
97
|
$4.04
|
- | - | - | - | - | 3Mbps | 64 Byte | - | - | - | - | - | - | - | - | - | Surface Mount | 2 | - | -40 to 85 | - | RS485 | - | °C ~ °C | 48-TQFP (7x7) | 48-TQFP (7x7) | - | No | - | 1.62V ~ 5.5V | - | - | Yes | Yes | Yes | Yes | |
NXP Semiconductors
|
94
|
$0.99
|
- | - | - | - | - | 5Mbps | 16 Byte | - | - | - | 10 mm | - | - | - | - | - | Surface Mount | 4 | -40°C to +85°C | - | - | - | - | °C ~ °C | 64-LQFP (10x10) | - | - | No | - | 2.5V, 3.3V, 5V | - | - | Yes | Yes | - | Yes | |
Texas Instruments
|
80
|
$0.99
|
- | - | - | - | - | 1Mbps | 16 Byte | Printer Port | - | - | 24.23 mm | - | - | - | - | - | Surface Mount | 2 | - | - | - | - | - | - | 68-PLCC (24.23x24.23) | - | - | - | - | 4.75V ~ 5.25V | - | - | - | Yes | - | Yes | |
Texas Instruments
|
56
|
$0.99
|
- | - | 16MHz | - | - | 1Mbps | 16 Byte | - | - | - | 24.23 mm | J-Lead | - | - | - | - | Surface Mount | 4 | - | - | - | - | - | - | 68-PLCC (24.23x24.23) | 68-PLCC (24.23x24.23) | - | - | - | 3V / 5.25V | - | - | Yes | Yes | - | Yes | |
Texas Instruments
|
55
|
$0.99
|
- | - | - | - | - | 1Mbps | 16 Byte | - | - | - | - | - | - | - | - | - | Surface Mount | 1 | -40 to 85°C | - | - | - | - | - | 48-LQFP (7x7) | 48-LQFP (7x7) | - | No | - | 2.25V ~ 5.5V | - | - | Yes | Yes | - | Yes | |
Texas Instruments
|
54
|
$4.25
|
- | - | - | - | - | 6 Mbps | 128 Byte | Internal Oscillator | - | - | 7 mm | - | - | - | - | - | Surface Mount | 1 | -40°C to 105°C | - | - | RS232, RS485 | - | - | 48-TQFP (7x7) | - | - | - | - | 1.62 V to 5.5 V | - | - | Yes | Yes | Yes | Yes | |
Texas Instruments
|
54
|
$5.96
|
- | - | - | - | - | 1 Mbps | 64 Byte | - | - | - | - | - | - | - | - | - | Surface Mount | 1 | - | - | - | - | - | °C ~ °C | 64-LQFP (10x10) | - | - | No | - | 3V ~ 5.25V | - | - | Yes | Yes | - | Yes | |
NXP Semiconductors
|
52
|
$0.99
|
No | No | - | - | - | 1Mbps | - | Configurable GPIO, Internal Oscillator, Timer/Counter | - | No | 15.24 mm | - | - | No | No | - | Through Hole | 2 | - | - | - | - | - | °C ~ °C | 28-DIP | 28-DIP | - | No | - | 5V | - | - | Yes | Yes | - | - | |
Maxlinear
|
44
|
$0.99
|
- | - | - | - | - | 1Mbps | - | Internal Oscillator, Timer/Counter | - | - | - | - | - | - | - | - | Surface Mount | 4 | - | - | - | - | - | °C ~ °C | 44-PLCC (16.59x16.59) | - | - | No | - | 5V | - | - | - | - | - | - | |
Harris Semiconductor
|
41
|
Price on request
|
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
Texas Instruments
|
36
|
$4.68
|
- | - | - | - | - | 6 Mbps | 64 Byte | Yes | - | - | 16.58 mm | - | - | - | - | - | Surface Mount | 2 | - | - | - | RS485 | - | - | 44-PLCC (16.58x16.58) | 44-PLCC (16.58x16.58) | - | No | - | 1.8V to 5V | - | - | Yes | Yes | Yes | Yes | |
Harris Semiconductor
|
25
|
Price on request
|
- | - | - | - | - | 1MBaud | - | Timer/Counter | - | - | - | J-Lead | - | - | - | - | Surface Mount | 1 | - | - | - | RS232 | Not Present | - | 28-PLCC (11.51x11.51) | - | - | - | - | 4.5V ~ 5.5V | - | - | No | Yes | No | Yes | |
Texas Instruments
|
20
|
$0.99
|
- | - | - | - | - | 1.5Mbps | 16 Byte | - | - | - | 16.58 mm | - | - | - | - | - | Surface Mount | 1 | - | - | - | - | - | - | 44-PLCC (16.58x16.58) | - | - | - | - | 4.5V ~ 5.5V | - | - | - | Yes | - | Yes | |
NXP Semiconductors
|
18
|
$0.99
|
- | - | - | 5 to 8 data bits plus parity, Odd/Even/No parity, 1/1.5/2 stop bits | - | 1Mbps | - | Configurable GPIO, Internal Oscillator, Timer/Counter | - | - | - | J-Lead | - | - | - | - | Surface Mount | 2 | - | - | - | - | - | °C ~ °C | 44-PLCC (16.59x16.59) | 44-PLCC (16.59x16.59) | - | No | - | 5V | - | - | Yes | Yes | - | - | |
NXP Semiconductors
|
12
|
$0.99
|
No | No | - | - | - | 1Mbps | - | Configurable GPIO, Internal Oscillator, Timer/Counter | - | No | - | - | - | No | No | - | Surface Mount | 2 | - | - | - | - | - | - | 44-PLCC | - | - | - | - | 5V | - | - | Yes | Yes | - | - | |
NXP Semiconductors
|
12
|
$0.99
|
- | - | - | - | - | 1Mbps | 8 Byte | Configurable GPIO, Internal Oscillator, Timer/Counter | - | - | - | - | - | - | - | - | Surface Mount | 2 | - | - | - | - | - | °C ~ °C | 44-PLCC (16.59x16.59) | 44-PLCC (16.59x16.59) | - | No | - | 5V | - | - | Yes | Yes | - | Yes | |
NXP Semiconductors
|
12
|
$0.99
|
- | - | - | - | 1Mbps | 1Mbps | 16 Byte | Configurable GPIO, Internal Oscillator, Timer/Counter | - | - | - | - | - | - | - | - | Surface Mount | 2 | - | - | - | - | - | °C ~ °C | 44-PQFP (10x10) | - | - | No | - | 3.3V, 5V | - | - | Yes | Yes | - | Yes | |
NXP Semiconductors
|
11
|
$0.99
|
- | - | - | - | - | - | - | Configurable GPIO, Internal Oscillator, Timer/Counter | - | - | 29.26 mm | - | - | - | - | - | Surface Mount | 8 | - | - | - | RS485 | - | - | 84-PLCC (29.26x29.26) | - | - | - | - | 5V | - | - | Yes | Yes | - | Yes | |
Texas Instruments
|
10
|
$4.45
|
No | No | - | - | - | 1.5 Mbps | 16 Byte | Internal Oscillator | - | No | - | - | - | No | No | - | Surface Mount | 2 | - | -40°C to 85°C | - | - | - | - | 32-VQFN (5x5) | - | - | No | - | 1.8V to 5V | - | - | Yes | Yes | - | Yes | |
Maxlinear
|
8
|
$0.99
|
- | - | - | - | - | 1.5Mbps | 16 Byte | Internal Oscillator, Timer/Counter | - | - | 0.8 mm | - | - | - | - | - | Surface Mount | 4 | - | - | - | RS232 | - | - | 64-LQFP (10x10) | - | - | - | - | 2.97V ~ 5.5V | 2.97V ~ 5.5V | - | Yes | Yes | - | Yes | |
Maxlinear
|
6
|
$0.99
|
- | - | - | - | - | 2Mbps | 128 Byte | Internal Oscillator, Printer Port, Timer/Counter | - | - | 7 mm | - | - | - | - | - | Surface Mount | 1 | - | - | - | RS485 | - | - | 48-TQFP (7x7) | - | - | - | - | 2.97V | - | - | Yes | Yes | Yes | Yes | |
Texas Instruments
|
6
|
$0.99
|
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | Surface Mount | 1 | - | - | 5 V | - | - | °C ~ °C | - | - | - | No | - | - | - | - | - | - | - | - | |
NXP Semiconductors
|
5
|
$0.99
|
- | - | - | 5 to 8 data bits plus parity, Odd/Even/No/Force Parity, 1/1.5/2 stop bits | - | - | - | Configurable GPIO, Internal Oscillator, Timer/Counter | - | - | - | - | - | - | - | - | Through Hole | 1 | - | - | - | - | - | °C ~ °C | 24-DIP | - | - | No | - | 5V | - | - | Yes | Yes | - | - | |
NXP Semiconductors
|
4
|
$0.99
|
- | - | - | - | - | 5Mbps | 128 Byte | - | - | - | - | - | - | - | - | - | Surface Mount | 1 | - | - | - | RS485 | - | - | 32-HVQFN (5x5) | - | - | - | - | 2.5V ~ 3.3V | - | - | Yes | Yes | Yes | Yes | |
Harris Semiconductor
|
3
|
Price on request
|
No | No | - | - | - | - | - | - | - | No | - | - | - | No | No | - | - | - | - | - | - | - | - | °C ~ °C | - | - | - | No | - | - | - | - | - | - | - | - | |
Analog Devices / Maxim Integrated
|
1
|
$0.99
|
- | - | - | - | Up to 26 Mbaud | - | 128 Byte | Internal Oscillator | - | - | 0 mm | - | - | - | - | - | Surface Mount | 4 | -40°C to +85°C | - | - | RS232, RS485 | - | - | 48-TQFN (7x7) | 48-TQFN (7x7) | - | - | - | 1.71V ~ 3.6V | - | - | Yes | - | Yes | - | |
NXP Semiconductors
|
1
|
$0.99
|
- | - | - | 5 to 8 data bits plus parity, Odd/Even/No parity, 1/1.5/2 stop bits | - | 1Mbps | - | Configurable GPIO, Internal Oscillator, Timer/Counter | - | - | - | - | - | - | - | - | Through Hole | 2 | - | - | - | - | - | °C ~ °C | 40-DIP | - | - | No | - | 5V | - | - | Yes | Yes | - | - | |
Texas Instruments
|
1
|
$0.99
|
- | - | - | - | - | 1.5Mbps | 16 Byte | - | - | - | 15.24 mm | - | - | - | - | - | Through Hole | 1 | - | - | - | - | - | °C ~ °C | 40-DIP | - | - | No | - | 4.5V ~ 5.5V | - | - | - | Yes | - | Yes | |
NXP Semiconductors
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | 1Mbps | - | Configurable GPIO, Internal Oscillator, Timer/Counter | - | - | - | - | - | - | - | - | Through Hole | 2, DUART | - | - | - | - | - | - | 28-DIP | - | - | - | - | 5V | - | - | Yes | Yes | - | - | |
NXP Semiconductors
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | 1Mbps | - | Configurable GPIO, Internal Oscillator, Timer/Counter | - | - | - | - | - | - | - | - | Through Hole | 2, DUART | - | - | - | - | - | - | 28-DIP | - | - | - | - | 5V | - | - | Yes | Yes | - | - | |
NXP Semiconductors
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | 1Mbps | - | Configurable GPIO, Internal Oscillator, Timer/Counter | - | - | - | - | - | - | - | - | Through Hole | 2, DUART | - | - | - | - | - | - | 40-DIP | - | - | - | - | 5V | - | - | Yes | Yes | - | - | |
NXP Semiconductors
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | 1Mbps | - | Configurable GPIO, Internal Oscillator, Timer/Counter | - | - | - | - | - | - | - | - | Through Hole | 2, DUART | - | - | - | - | - | - | 40-DIP | - | - | - | - | 5V | - | - | Yes | Yes | - | - | |
NXP Semiconductors
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | 1Mbps | - | Configurable GPIO, Internal Oscillator, Timer/Counter | - | - | - | - | - | - | - | - | Surface Mount | 2, DUART | - | - | - | - | - | - | 44-PLCC (16.59x16.59) | - | - | - | - | 5V | - | - | Yes | Yes | - | - | |
NXP Semiconductors
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | 1Mbps | - | Configurable GPIO, Internal Oscillator, Timer/Counter | - | - | - | - | - | - | - | - | Surface Mount | 2, DUART | - | - | - | - | - | - | 44-PLCC (16.59x16.59) | - | - | - | - | 5V | - | - | Yes | Yes | - | - | |
NXP Semiconductors
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | 1Mbps | - | Configurable GPIO, Internal Oscillator, Timer/Counter | - | - | - | - | - | - | - | - | Through Hole | 2, DUART | - | - | - | - | - | - | 40-DIP | - | - | - | - | 5V | - | - | Yes | Yes | - | - |
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