MAX7314ATG Maxim Integrated Products, MAX7314ATG Datasheet - Page 6

• Manufacturer Part Number: MAX7314ATG
• Description: Communication ICs - Various
• Manufacturer: Maxim Integrated Products
• Type: Hot Insertion Protectionr

Specifications of MAX7314ATG

• Mounting Style: SMD/SMT
• Operating Supply Voltage: 2.5 V, 3.3 V
• Supply Type: Analog
• Package / Case: TQFN-24 EP
• Data Rate: 400 Kbps
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2 V
• Supply Current: 0.057 mA
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX7314 is a general-purpose input/output (GPIO)
peripheral that provides 16 I/O ports, P0–P15, con-
trolled through an I
17th output-only port, INT/O16, can be configured as
an interrupt output or as a general-purpose output port.
18-Port GPIO with LED Intensity Control,
Interrupt, and Hot-Insertion Protection
Figure 1. Simplified Schematic of I/O Ports
6
4–11, 13–20
_______________________________________________________________________________________
QSOP
12
21
22
23
24
—
1
2
3
PIN
2
1–8, 10–17
C-compatible serial interface. A
Functional Overview
QFN
PAD
22
23
24
18
19
20
21
9
CONFIGURATION
SHIFT REGISTER
SHIFT REGISTER
WRITE PULSE
READ PULSE
DATA FROM
DATA FROM
PULSE
WRITE
Exposed Pad
INT/O16
P0–P15
NAME
BLINK
GND
SDA
RST
AD0
SCL
V+
CONFIGURATION
REGISTER
D
C
K
FF
Q
Q
Output Port. Open-drain output rated at 7V, 50mA. Configurable as interrupt
output or general-purpose output.
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–P15 are open-drain I/Os rated at 5.5V, 50mA.
Ground. Do not sink more than 350mA into the GND pin.
Input Port Configurable as Blink Control or General-Purpose Input
I
I
Positive Supply Voltage. Bypass V+ to GND with a 0.047µF ceramic
capacitor.
Exposed Pad on Package Underside. Connect to GND.
2
2
C-Compatible Serial Clock Input
C-Compatible Serial Data I/O
REGISTER
D
C
OUTPUT
PORT
K
FF
INPUT PORT
REGISTER
D
C
Q
Q
K
FF
Q
Q
All output ports sink loads up to 50mA connected to
external supplies up to 5.5V, independent of the
MAX7314’s supply voltage. The MAX7314 is rated for a
ground current of 350mA, allowing all 17 outputs to sink
20mA at the same time. Figure 1 shows the output
structure of the MAX7314. The ports default to inputs on
power-up.
Q2
FUNCTION
OUTPUT PORT
REGISTER DATA
I/O PIN
GND
INPUT PORT
REGISTER DATA
TO INT
Pin Description