MAX6974 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX6974 Datasheet PDF : 23 Pages
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24-Output PWM LED Drivers
for Message Boards
ABSOLUTE MAXIMUM RATINGS
(All voltages with respect to GND.)
VDD ........................................................................-0.3V to +4.0V
R0–R7, G0–G7, B0–B7, MUX0, and MUX1 ...........-0.3V to +8.0V
All Other Pins..............................................-0.3V to (VDD + 0.3V)
Continuous Power Dissipation (TA = +70°C)
40-Pin TQFN (derate 37mW/°C over +70°C) .............2963mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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.
ELECTRICAL CHARACTERISTICS
(VDD = 3.0V to 3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VDD = 3.3V, TA = +85°C.) (Note 1)
PARAMETER
Operating Supply Voltage
LEDs Anode Voltage
(R0–R7, G0–G7, B0–B7, MUX0,
and MUX1)
SYMBOL
VDD
VO
CONDITIONS
MIN TYP MAX UNITS
3.0
3.6
V
7
V
Supply Current
Input High Voltage LOADI
IDD
VIHC
fCLKI = 0Hz; CLKO_, DOUT_ loaded 200Ω;
calibration DACs set to 0x01
fCLKI = 0Hz; CLKO_, DOUT_ loaded 200Ω;
calibration DACs set to 0xFF
fCLKI = 32MHz; CLKO_, DOUT_ loaded 200Ω;
calibration DACs set to 0xFF
Input Low Voltage LOADI
Differential Input Voltage Range
CLKI_, DIN_
Common-Mode Input Voltage
CLKI_, DIN_
Differential Input High Threshold
Differential Input Low Threshold
Differential Output Voltage
CLKO_, DOUT_
Differential Output Offset
CLKO_, DOUT_
Input Leakage Current
CLKI_, DIN_, LOADI
VILC
VID
VCM
VDIFFTH
VDIFFTL
VOD Termination 200Ω at receiver _+ and _- inputs
VOS Termination 200Ω at receiver _+ and _- inputs
IIH, IIL
28 52
51 72 mA
54 77
0.7
x VDD
±0.15
V
0.3
V
x VDD
±1.20 V
|VID / 2|
2.4
V
8 100 mV
-100 -8
mV
±190
±550 mV
1.125 1.25 1.375 V
-1
+1
µA
Input Capacitance
CLKI_, DIN_, LOADI
Output Low Voltage LOADO
Output High Voltage LOADO
VOLC
VOHC
ISINK = 5mA
ISOURCE = 5mA
10
pF
0.05 0.25 V
VDD
VDD
V
- 0.5 - 0.2
2 _______________________________________________________________________________________
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