Datasheet

MAX6953
2-Wire Interfaced, 2.7V to 5.5V, 4-Digit 5
✕
7
Matrix LED Display Driver
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(Typical operating circuit, V+ = 3.0V to 5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Note 1)
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.
Voltage (with Respect to GND)
V+.............................................................................-0.3V to +6V
All Other Pins................................................-0.3V to (V+ + 0.3V)
O0–O13 Sink Current....................................................... 500mA
O14–O23 Source Current .................................................. 50mA
Continuous Power Dissipation (T
A
= +70°C)
36-Pin SSOP (derate 11.8mW/°C above +70°C) .....941.2mW
40-Pin PDIP (derate 16.7mW/°C above +70°C)........1333mW
Operating Temperature Range
MAX6953E......................................................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Operating Supply Voltage V+ 2.7 5.5 V
T
A
= T
MIN
to T
MAX
130
Shutdown Supply Current I
SHDN
Shutdown mode, all
digital inputs at V+
or GND
T
A
= +25°C 70 100
µA
Operating Supply Current I+
All segments on, intensity set to full,
internal oscillator, no display load
connected, BLINK open circuit
12 15 mA
Master Clock Frequency
(OSC Internal Oscillator)
f
OSC
OSC = RC oscillator, R
SET
= 53.6kΩ,
C
SET
= 26pF
4
MHz
Master Clock Frequency
(OSC External Clock)
f
OSC
OSC overdriven externally 1 8
MHz
Dead Clock Protection
Frequency
f
OSC
90 kHz
OSC Internal/External Detection
Threshold
V
OSC
1.7
V
OSC High Time t
CH
50 ns
OSC Low Time t
CL
50
ns
Slow Segment Blink Period
(OSC Internal Oscillator)
f
SLOWBLINK
OSC = RC oscillator, R
SET
= 53.6kΩ,
C
SET
= 26pF
1s
Fast Segment Blink Period
(OSC Internal Oscillator)
f
FASTBLINK
OSC = RC oscillator, R
SET
= 53.6kΩ,
C
SET
= 26pF
0.5
s
Fast or Slow Segment Blink
Duty Cycle (Note 2)
49.5 50.5
%
Column Drive Source Current
I
COLUMN
V
LED
= 2.4V, V+ = 3.0V, T
A
= +25
o
C -32 -58 mA