MAX7359 Maxim, MAX7359 Datasheet - Page 2

• Manufacturer Part Number: MAX7359
• Description: The MAX7359 I²C interfaced peripheral provides microprocessors with management of up to 64 key switches
• Manufacturer: Maxim

2-Wire Interfaced Low-EMI
Key Switch Controller/GPO
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND.)
V
COL2/PORT2–COL7/PORT7 ....................................-0.3V to +4V
SDA, SCL, AD0, INT .................................................-0.3V to +6V
All Other Pins ..............................................-0.3V to (V
DC Current on COL2/PORT2–COL7/PORT7 ......................25mA
GND Current .......................................................................80mA
Continuous Power Dissipation (T
ELECTRICAL CHARACTERISTICS
(V
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation 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.
2
Operating Supply Voltage
Operating Supply Current
Sleep-Mode Supply Current
POR
POR Hysteresis
Key-Switch Source Current
Key-Switch Source Voltage
Key-Switch Resistance
Startup Time from Shutdown
Output Low Voltage
COL2/PORT2 to COL7/PORT7
INT Output
Oscillator Frequency
SERIAL-INTERFACE SPECIFICATIONS
Serial Bus Timeout
Input High Voltage
SDA, SCL, AD0
Input Low Voltage
SDA, SCL, AD0
Output Low Voltage SDA
Input Leakage Current
CC
24-Pin TQFN (derate 15.4mW/°C above +70°C) ........1229mW
25-Bump WLP (derate 19.2mW/°C above +70°C)......1194mW
CC
_______________________________________________________________________________________
..........................................................................-0.3V to +4V
= +1.62V to +3.6V, T
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
PARAMETER
A
= T
MIN
A
= +70°C)
to T
PORHYST
SYMBOL
V
V
V
t
OLPORT
OLPORT
MAX
R
START
F
V
t
V
I
OLINT
I
OUT
V
KEY
V
I
OSC
KEY
CC
KEY
SL
CC
IH
IL
, unless otherwise noted. Typical values are at V
All key switches open, oscillator running,
COL2–COL7 configured as key switches
N keys pressed
V
Operating mode
(Note 4)
I
I
With bus timeout enabled
I
V
SINK
SINK
SINK
CC
CC
CC
rising
= 0V to +6V
= 10mA
= 10mA
= 10mA
+ 0.3V)
CONDITIONS
Junction-to-Case Thermal Resistance (
Junction-to-Ambient Thermal Resistance (
Operating Temperature Range (T
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (TQFN only, soldering, 10s) ..............+300°C
Soldering Temperature (reflow) .......................................+260°C
24-Pin TQFN.................................................................5.4°C/W
25-Bump WLP ...............................................................17°C/W
24-Pin TQFN...............................................................65.1°C/W
25-Bump WLP ...............................................................53°C/W
CC
= +2.5V, T
0.7 x
1.62
MIN
V
1.0
10
-1
CC
MIN
A
20 x N)
to T
(25 +
TYP
0.42
= +25°C.) (Notes 2, 3)
0.6
25
42
20
64
θ
2
JC
MAX
θ
) (Note 1)
JA
) .....-40°C to +85°C
) (Note 1)
MAX
0.3 x
3.60
0.55
V
1.6
2.4
0.2
0.5
0.4
+1
60
35
40
CC
5
5
UNITS
kHz
mV
ms
ms
µA
µA
µA
kΩ
µA
V
V
V
V
V
V
V
V