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. 7 — 9 June 2011
Product data sheet
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 and benefits
2.1 General features
Single full-duplex UART
Selectable I
2
C-bus or SPI interface
3.3 V or 2.5 V operation
Industrial temperature range:
40 C
to +95
C
64 bytes FIFO (transmitter and receiver)
Fully compatible with industrial standard 16C450 and equivalent
Baud rates up to 5 Mbit/s in 16 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)
NXP Semiconductors
SC16IS740/750/760
Single UART with I
2
C-bus/SPI interface, 64-byte FIFOs, IrDA SIR
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/s
1
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
A
at 3.3 V
Industrial and commercial temperature ranges
Available in HVQFN24, TSSOP24 (SC16IS750/760) and TSSOP16 (SC16IS740)
packages
2.2 I
2
C-bus features
Noise filter on SCL/SDA inputs
400 kbit/s maximum speed
Compliant with I
2
C-bus fast speed
Slave mode only
2.3 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
3. Applications
Factory automation and process control
Portable and battery operated devices
Cellular data devices
1.
Please note that IrDA SIR at 1.152 Mbit/s is
not
compatible with IrDA MIR at that speed. Please refer to application notes for usage
of IrDA SIR at 1.152 Mbit/s.
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
SC16IS740_750_760
Product data sheet
Rev. 7 — 9 June 2011
2 of 63
NXP Semiconductors
SC16IS740/750/760
Single UART with I
2
C-bus/SPI interface, 64-byte FIFOs, IrDA SIR
4. Ordering information
Table 1.
Ordering information
Package
Name
SC16IS740IPW
SC16IS740IPW/Q900
[1]
SC16IS750IBS
SC16IS750IPW
SC16IS760IBS
SC16IS760IPW
[1]
Type number
Description
Version
TSSOP16
TSSOP16
HVQFN24
TSSOP24
HVQFN24
TSSOP24
plastic thin shrink small outline package; 16 leads; body width 4.4 mm SOT403-1
plastic thin shrink small outline package; 16 leads; body width 4.4 mm SOT403-1
plastic thermal enhanced very thin quad flat package; no leads;
24 terminals; body 4
4
0.85 mm
plastic thermal enhanced very thin quad flat package; no leads;
24 terminals; body 4
4
0.85 mm
SOT616-3
plastic thin shrink small outline package; 24 leads; body width 4.4 mm SOT355-1
SOT616-3
plastic thin shrink small outline package; 24 leads; body width 4.4 mm SOT355-1
SC16IS740IPW/Q900 is AEC-Q100 compliant. Contact interface.support@nxp.com for PPAP.
SC16IS740_750_760
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 7 — 9 June 2011
3 of 63
NXP Semiconductors
SC16IS740/750/760
Single UART with I
2
C-bus/SPI interface, 64-byte FIFOs, IrDA SIR
5. Block diagram
V
DD
SC16IS750/760
RESET
SCL
SDA
A0
A1
IRQ
1 kΩ (3.3 V)
1.5 kΩ (2.5 V)
4
I
2
C-BUS
16C450
COMPATIBLE
REGISTER
SETS
TX
RX
RTS
CTS
V
DD
V
DD
I2C/SPI
GPIO
REGISTER
GPIO[3:0]
GPIO4/DSR
GPIO5/DTR
GPIO6/CD
GPIO7/RI
XTAL1
XTAL2
V
SS
002aab014
Fig 1.
Block diagram of SC16IS750/760 I
2
C-bus interface
V
DD
SC16IS740
RESET
SCL
SDA
A0
A1
IRQ
1 kΩ (3.3 V)
1.5 kΩ (2.5 V)
I
2
C-BUS
16C450
COMPATIBLE
REGISTER
SETS
TX
RX
RTS
CTS
V
DD
V
DD
I2C/SPI
XTAL1
XTAL2
V
SS
002aab971
Fig 2.
Block diagram of SC16IS740 I
2
C-bus interface
SC16IS740_750_760
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 7 — 9 June 2011
4 of 63
NXP Semiconductors
SC16IS740/750/760
Single UART with I
2
C-bus/SPI interface, 64-byte FIFOs, IrDA SIR
V
DD
SC16IS750/760
RESET
SCLK
CS
SO
SI
IRQ
1 kΩ (3.3 V)
1.5 kΩ (2.5 V)
4
SPI
16C450
COMPATIBLE
REGISTER
SETS
TX
RX
RTS
CTS
V
DD
I2C/SPI
GPIO
REGISTER
GPIO[3:0]
GPIO4/DSR
GPIO5/DTR
GPIO6/CD
GPIO7/RI
XTAL1
XTAL2
V
SS
002aab396
Fig 3.
Block diagram of SC16IS750/760 SPI interface
V
DD
SC16IS740
RESET
SCLK
CS
SO
SI
IRQ
1 kΩ (3.3 V)
1.5 kΩ (2.5 V)
SPI
16C450
COMPATIBLE
REGISTER
SETS
TX
RX
RTS
CTS
V
DD
I2C/SPI
XTAL1
XTAL2
V
SS
002aab972
Fig 4.
Block diagram of SC16IS740 SPI interface
SC16IS740_750_760
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 7 — 9 June 2011
5 of 63
