2-Wire Interfaced, 3V to 5.5V, 4-Digit,
9-Segment LED Display Drivers with Keyscan
MAX6958/MAX6959
ABSOLUTE MAXIMUM RATINGS
Voltage (with respect to GND)
V+, SCL, SDA .......................................................-0.3V to +6V
All Other Pins............................................-0.3V to (V+ + 0.3V)
Current
DIG0/SEG0鈥揇IG3/SEG3 Sink Current ..........................275mA
DIG0/SEG0鈥揝EG9 Source Current .................................30mA
SCL, SDA, INPUT1, INPUT2 ...........................................20mA
Continuous Power Dissipation (T
A
= +70擄C)
16-Pin DIP (derate at 10.5mW/擄C above +70擄C) .........842mW
16-Pin QSOP (derate at 8.34mW/擄C above +70擄C).....667mW
Operating Temperature Range
MAX695_ (T
MIN
to T
MAX
) ...............................-40擄C to +125擄C
Junction Temperature ......................................................+150擄C
Storage Temperature Range .............................-65擄C to +150擄C
Lead Temperature (soldering, 10s) .................................+300擄C
Stresses beyond those listed under 鈥淎bsolute Maximum Ratings鈥?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.
DC ELECTRICAL CHARACTERISTICS
(V+ = 3V to 5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V+ = 5V, T
A
= +25擄C.) (Note 1)
PARAMETER
Operating Supply Voltage
Shutdown Supply Current
SYMBOL
V+
I
SHDN
Shutdown mode, all
digital inputs at V+
Intensity set to full,
no display load
connected, INPUT1
and INPUT2 open
circuit
4 digits scanned
V
LED
= 2.4V,
V+ = 4.5V to 5.5V
Segment Drive Source Current
I
SEG
V
LED
= 2V,
V+ = 3V to 5.5V
T
A
= +25擄C
T
A
= T
MIN
to +85擄C
T
A
= +25擄C
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
T
A
= +25擄C
T
A
= T
MIN
to T
MAX
T
A
= +25擄C
T
A
= T
MIN
to T
MAX
510
30.3
-19
-18
-16
-15.5
11
4
780
41
-23
5.9
CONDITIONS
MIN
3
20
TYP
MAX
5.5
50
125
6.7
mA
UNITS
V
碌A(chǔ)
Operating Supply Current
I+
7.5
Display Scan Rate
Keyscan Debounce Time
f
SCAN
t
DEBOUNCE
1050
63
-29
-30
-29.5
-30.5
Hz
ms
mA
Segment Current Slew Rate
Segment Drive Current Matching
LOGIC INPUTS AND OUTPUTS
Input Leakage Current SCL
and SDA
Logic High Input Voltage SCL,
SDA
Logic Low Input Voltage SCL,
SDA
Input Leakage Current INPUT1,
INPUT2
Logic High Input Voltage INPUT1,
INPUT2
Logic Low Input Voltage INPUT1,
INPUT2
鈭咺
SEG
/鈭唗
鈭咺
SEG
mA/碌s
%
I
IH
, I
IL
V
IH
V
IL
I
INH
, I
INL
V
INH
V
INL
INPUT_ = V+
-1
2.1
+1
碌A(chǔ)
V
0.8
-1
0.7
鉁?/div>
V+
0.3
鉁?/div>
V+
+1
V
碌A(chǔ)
V
V
2
_______________________________________________________________________________________
prev
next