MAX7316AEE+ Maxim Integrated Products, MAX7316AEE+ Datasheet - Page 6

• Manufacturer Part Number: MAX7316AEE+
• Description: IC I/O EXPANDER I2C 16B 16QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX7316AEE+

• Interface: I²C, SMBus
• Number Of I /o: 10
• Interrupt Output: Yes
• Frequency - Clock: 400kHz
• Voltage - Supply: 2 V ~ 3.6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX7316 is a general-purpose input/output (GPIO)
peripheral that provides eight I/O ports, P0–P7, con-
trolled through an I
output-only port, INT/O8, can be configured as an inter-
rupt output or as a general-purpose output port. All out-
10-Port I/O Expander with LED Intensity
Control, Interrupt, and Hot-Insertion Protection
Figure 1. Simplified Schematic of I/O Ports
6
_______________________________________________________________________________________
4–7, 9–12
QSOP
13
14
15
16
—
1
2
3
8
PIN
2
C-compatible serial interface. A 9th
2–5, 7–10
Functional Overview
QFN
PAD
CONFIGURATION
15
16
11
12
13
14
SHIFT REGISTER
SHIFT REGISTER
1
6
WRITE PULSE
READ PULSE
DATA FROM
DATA FROM
PULSE
WRITE
Exposed pad Exposed Pad on Package Underside. Connect to GND.
CONFIGURATION
INT/O8
NAME
BLINK
P0–P7
GND
AD0
SCL
SDA
REGISTER
RST
D
C
V+
K
FF
Q
Q
Input Port Configurable as Blink Control or General-Purpose Input
Reset Input. Active low clears the 2-wire interface and puts the device in the
same condition as power-up reset.
Address Input. Sets device slave address. Connect to either GND, V+, SCL,
or SDA to give four logic combinations. See Table 1.
Input/Output Ports. P0–P7 are open-drain I/Os rated at 5.5V, 50mA.
Ground. Do not sink more than 190mA into the GND pin.
Output Port. Open-drain output rated at 7V, 50mA. Configurable as interrupt
output or general-purpose output.
I
I
Positive Supply Voltage. Bypass V+ to GND with a 0.047µF ceramic
capacitor.
REGISTER
2
2
OUTPUT
D
C
C-Compatible Serial Clock Input
C-Compatible Serial Data I/O
PORT
K
FF
INPUT PORT
REGISTER
D
C
Q
Q
K
FF
Q
Q
put ports sink loads up to 50mA connected to external
supplies up to 5.5V, independent of the MAX7316’s
supply voltage. The MAX7316 is rated for a ground cur-
rent of 190mA, allowing all nine outputs to sink 20mA at
the same time. Figure 1 shows the output structure of
the MAX7316. The ports default to inputs on power-up.
Q2
OUTPUT PORT
REGISTER DATA
I/O PIN
GND
INPUT PORT
REGISTER DATA
TO INT
FUNCTION
Pin Description