The MAX7316 I²C/SMBus™-compatible serial interfaced
peripheral provides microprocessors with eight additional
I/O ports plus one output-only port and one input-only
port. Each I/O port can be individually configured as
either an open-drain current-sinking output rated to 50mA
at 5.5V or as a logic input with transition detection. The
output-only port can also be assigned as an interrupt output
for transition detection. The outputs are capable of
driving LEDs, or can provide logic outputs with external
resistive pullup up to 5.5V.
Eight-bit PWM current control is available for all nine output
ports. Four bits are global control and apply to all LED
outputs to provide coarse adjustment of current from fully
off to fully on in 14 intensity steps. Additionaly each output
then has individual 4-bit control, which further divides the
globally set current into 16 more steps. Alternatively, the
current control can be configured as a single 8-bit control
that sets all outputs at once.
Each output has independent blink timing with two blink
phases. LEDs can be individually set to be on or off during
either blink phase or to ignore the blink control. The
blink period is controlled by an external clock input (up to
1kHz) on BLINK or by a register. The BLINK input can
also be used as a logic control to turn the LEDs on and
off, or as a general-purpose input.
The MAX7316 supports hot insertion. All port pins, the
INT-bar output, SDA, SCL, RST-bar, BLINK, and the slave
address input ADO remain high impedance in powerdown
(V+ = 0V) with up to 6V asserted upon them.
The MAX7316 is controlled through a 2-wire serial interface,
and can be set to one of four I²C addresses.
Key Features
Applications/Uses
400kbps, 2-Wire Serial Interface, 5.5V Tolerant
2V to 3.6V Operation
Overall 8-Bit PWM LED Intensity Control
Global 16-Step Intensity Control
Plus Individual 16-Step Intensity Controls
2-Phase LED Blinking
High Output Current (50mA max per Port)
Supports Hot Insertion
Outputs are 5.5V-Rated Open Drain
Inputs are Overvoltage Protected to 5.5V
Transition Detection with Interrupt Output
RST-bar Input Clears Serial Interface and Restores Power-Up Default State
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
Devices:
1-8 of 8
MAX7316
Free Sample
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Status
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
Temp
RoHS/Lead-Free? Materials Analysis
MAX7316AEE+
Active
QSOP;16 pin;31 mm²
Outline Drawing: 21-0055 (PDF)
Land Pattern: 90-0167 (PDF)
Use pkgcode/variation: E16+4*
MAX6957 4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port LED Display Driver and I/O Expander MAX7301 4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port I/O Expander MAX7300 2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port I/O Expander MAX6956 2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port LED Display Driver and I/O Expander MAX7310 2-Wire-Interfaced 8-Bit I/O Port Expander with Reset MAX7311 2-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt and Hot-Insertion Protection MAX6965 9-Output LED Driver with Intensity Control and Hot-Insertion Protection MAX7312 2-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt and Hot-Insertion Protection MAX7313 16-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection MAX7315 8-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection MAX7316 10-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection MAX7314 18-Port GPIO with LED Intensity Control, Interrupt, and Hot-Insertion Protection MAX6964 17-Output LED Driver/GPO with Intensity Control and Hot-Insertion Protection MAX7317 10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection MAX7318 2-Wire-Interfaced, 16-Bit, I/O Port Expander with Interrupt and Hot-Insertion Protection
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