Datasheet

Voltage (with Respect to GND)
V+ ............................................................................-0.3V to +6V
All Other pins ...............................................-0.3V to (V+ + 0.3V)
P4–P31 Current ...............................................................±30mA
GND Current ....................................................................800mA
Continuous Power Dissipation (T
A
= +70°C)
28-Pin PDIP (derate 14.3mW/°C above +70°C) .......1143mW
28-Pin SSOP (derate 9.1mW/°C above +70°C) ..........727mW
36-Pin SSOP (derate 11.8mW/°C above +70°C) ........941mW
40-Pin TQFN (derate 37.0mW/°C above +70°C) ......2963mW
Operating Temperature Range (T
MIN
, T
MAX
) .... -40°C to +125°C
Junction Temperature ...................................................... +150°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
(Typical Operating Circuit, V+ = 2.5V to 5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Operating Supply Voltage V+ 2.5 5.5 V
Shutdown Supply Current I
SHDN
All digital inputs at
V+ or GND
T
A
= +25°C 5.5 8
µAT
A
= -40°C to +85°C 10
T
A
= T
MIN
to T
MAX
11
Operating Supply Current I
GPOH
All ports programmed
As outputs high, no load,
All other inputs at V+ or
GND
T
A
= +25°C 180 230
µAT
A
= -40°C to +85°C 250
T
A
= T
MIN
to T
MAX
270
Operating Supply Current I
GPOL
All ports programmed
As outputs low, no load,
All other inputs at V+ or
GND
T
A
= +25°C 170 210
µAT
A
= -40°C to +85°C 230
T
A
= T
MIN
to T
MAX
240
Operating Supply Current I
LED
All ports programmed
as LED outputs, all LEDs
off, no load, all other
inputs at V+ or GND
T
A
= +25°C 110 135
µAT
A
= -40°C to +85°C 140
T
A
= T
MIN
to T
MAX
145
INPUTS AND OUTPUTS
Logic-High Input Voltage
Port Inputs
V
IH
0.7 ×
V+
V
Logic-Low Input Voltage
Port Inputs
V
IL
0.3 ×
V+
V
Input Leakage Current I
IH
, I
IL
GPIO inputs without pullup,
V
PORT
= V+ to GND
-100 ±1 +100 nA
GPIO Input Internal Pullup to V+ I
PU
V+ = 2.5V 12 19 30
µA
V+ = 5.5V 80 120 180
Hysteresis Voltage GPIO Inputs DV
I
0.3 V
Output High Voltage V
OH
GPIO outputs, I
SOURCE
= 2mA, T
A
= -40°C to
+85°C
V+ -
0.7
V
GPIO outputs, I
SOURCE
= 1mA,
T
A
= T
MIN
to T
MAX
(Note 2)
V+ -
0.7
V
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Maxim Integrated │ 2
MAX6957 4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and
28-Port LED Display Driver and I/O Expander
Electrical Characteristics
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.
Absolute Maximum Ratings