General description
The SC16IS740/750/760 is a slave I2C-bus/SPI interface to a single-channel high performance UART. It offers data rates up to 5 Mbit/s and guarantees low operating and sleeping current. The SC16IS750 and SC16IS760 also provide the application with 8 additional programmable I/O pins. The device comes in very small HVQFN24, TSSOP24 (SC16IS750/760) and TSSOP16 (SC16IS740) packages, which makes it ideally suitable for handheld, battery operated applications. This family of products enables seamless protocol conversion from I2C-bus or SPI to and RS-232/RS-485 and are fully bidirectional.
The SC16IS760 differs from the SC16IS750 in that it supports SPI clock speeds up to 15 Mbit/s instead of the 4 Mbit/s supported by the SC16IS750, and in that it supports IrDA SIR up to 1.152 Mbit/s. In all other aspects, the SC16IS760 is functionally and electrically the same as the SC16IS750. The SC16IS740 is functionally and electrically identical to the SC16IS750, with the exception of the programmable I/O pins which are only present on the SC16IS750.
The SC16IS740/750/760’s internal register set is backward-compatible with the widely used and widely popular 16C450. This allows the software to be easily written or ported from another platform.
The SC16IS740/750/760 also provides additional advanced features such as auto hardware and software flow control, automatic RS-485 support, and software reset. This allows the software to reset the UART at any moment, independent of the hardware reset signal.

Features and benefits
General features
■ Single full-duplex UART
■ Selectable I2C-bus or SPI interface
■ 3.3 V or 2.5 V operation
■ Industrial temperature range: −40 °C to +85 °C
■ 64 bytes FIFO (transmitter and receiver)
■ Fully compatible with industrial standard 16C450 and equivalent
■ Baud rates up to 5 Mbit/s in 16x clock mode
■ Auto hardware flow control using RTS/CTS
■ Auto software flow control with programmable Xon/Xoff characters
■ Single or double Xon/Xoff characters
■ Automatic RS-485 support (automatic slave address detection)
■ Up to eight programmable I/O pins (SC16IS750 and SC16IS760 only)
■ RS-485 driver direction control via RTS signal
■ RS-485 driver direction control inversion
■ Built-in IrDA encoder and decoder interface
■ SC16IS750 supports IrDA SIR with speeds up to 115.2 kbit/s
■ SC16IS760 supports IrDA SIR with speeds up to 1.152 Mbit/s1
■ Software reset
■ Transmitter and receiver can be enabled/disabled independent of each other
■ Receive and Transmit FIFO levels
■ Programmable special character detection
■ Fully programmable character formatting
   ◆ 5-bit, 6-bit, 7-bit or 8-bit character
   ◆ Even, odd, or no parity
   ◆ 1, 1 1/2, or 2 stop bits
■ Line break generation and detection
■ Internal Loopback mode
■ Sleep current less than 30 μA at 3.3 V
■ Industrial and commercial temperature ranges
■ Available in HVQFN24, TSSOP24 (SC16IS750/760) and TSSOP16 (SC16IS740)
   packages

I2C-bus features
■ Noise filter on SCL/SDA inputs
■ 400 kbit/s maximum speed
■ Compliant with I2C-bus fast speed
■ Slave mode only

SPI features
■ SC16IS750 supports 4 Mbit/s maximum SPI clock speed
■ SC16IS760 supports 15 Mbit/s maximum SPI clock speed
■ Slave mode only
■ SPI Mode 0

Applications
■ Factory automation and process control
■ Portable and battery operated devices
■ Cellular data devices