1. General description
The SC16IS740/750/760 is a slave I
2
C-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 I
2
C-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.
2. Features
2.1 General features
n Single full-duplex UART
n Selectable I
2
C-bus or SPI interface
n 3.3 V or 2.5 V operation
n Industrial temperature range: −40 °C to +95 °C
n 64 bytes FIFO (transmitter and receiver)
n Fully compatible with industrial standard 16C450 and equivalent
n Baud rates up to 5 Mbit/s in 16× clock mode
n Auto hardware flow control using RTS/CTS
n Auto software flow control with programmable Xon/Xoff characters
n Single or double Xon/Xoff characters
n Automatic RS-485 support (automatic slave address detection)
SC16IS740/750/760
Single UART with I
2
C-bus/SPI interface, 64 bytes of transmit
and receive FIFOs, IrDA SIR built-in support
Rev. 06 — 13 May 2008 Product data sheet
