MAX7365 Maxim, MAX7365 Datasheet - Page 2

• Manufacturer Part Number: MAX7365
• Description: The MAX7365 is an I²C-interfaced peripheral that provides microprocessors with management of up to 56 key switches
• Manufacturer: Maxim

ABSOLUTE MAXIMUM RATINGS
V
ROW7–ROW0, COL6–COL0,
SDA, SCL, INT to GND .............................................. -0.3V to 6V
DC Current on ROW7–ROW0, COL6–COL0 to GND ...........1mA
DC Current on GPIO4–GPIO0 to GND ..............................12mA
GND Current ......................................................................12mA
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
PACKAGE THERMAL CHARACTERISTICS (Note 1)
Junction-to-Ambient Thermal Resistance (θ
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
ELECTRICAL CHARACTERISTICS
(V
Operating Supply Voltage
Operating Supply Current
Sleep-Mode Supply Current
Key-Switch Source Current
Key-Switch Source Voltage
Key-Switch Resistance
Startup Time from Shutdown
Keyscan Frequency
Maximum Allowable Load
Capacitance for Keyscan Function
GPIO SPECIFICATIONS
Input High Voltage
GPIO_, ROW_, COL_, SDA, SCL
Input Low Voltage
GPIO_, ROW_, COL_, SDA, SCL
Input Leakage Current
GPIO_, ROW_, COL_, SDA, SCL
Output Logic Low Voltage
INT, SDA
Output Low Voltage
GPIO_
DD
DD
GPIO4–GPIO0 to GND ......................... -0.3V to (V
to GND ............................................................ -0.3V to 4.0V
= 1.62V to 3.6V, T
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
PARAMETER
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A
= -40NC to +85NC, unless otherwise noted. Typical values are at V
Key-Switch Controller with GPIO Ports
SYMBOL
t
R
START
V
I
f
V
V
I
V
I
KEY
KEY
V
I
KEY
DD
KEY
DD
SL
IN
OL
IH
IL
JA
) ..............52NC/W
N keys pressed; GPI static
All 56 key switches open
(Note 4)
N keys pressed simultaneously (Note 4)
Input voltage = V
I
V
V
SINK
DD
DD
DD
= 1.8V and I
= 1.8V and I
= 6mA
+ 0.3V)
CONDITIONS
1MHz I
DD
SINK
SINK
Continuous Power Dissipation (T
Operating Temperature Range .......................... -40NC to +85NC
Junction Temperature .....................................................+150NC
Storage Temperature Range ............................ -65NC to +150NC
Soldering Temperature (reflow) .................................... +260NC
or V
WLP (derate 19.2mW/NC above +70NC)....................1536mW
= 5mA
= 10mA
GND
2
C-Interfaced 8 x 7
DD
= 3.3V, T
0.7 x
1.62
MIN
V
51
-2
DD
34 + (25 x N)
A
= +70NC)
A
TYP
0.42
= +25NC.) (Notes 2, 3)
3.3
0.8
60
20
64
40
80
2
MAX7365
MAX
0.3 x
0.55
V
500
100
200
3.6
2.4
0.5
85
36
82
-2
5
5
DD
UNITS
kHz
FA
FA
FA
FA
kI
ms
FA
pF
V
V
V
V
V
V