MAX7221CSLASHD datasheet(2/15 Pages) MAXIM

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Voltage (with respect to GND)

V+ ..........................................................................-0.3V to 6V

DIN, CLK, LOAD, CS ............................................-0.3V to 6V

All Other Pins.............................................-0.3V to (V+ + 0.3V)

Current

DIG 0–DIG 7 Sink Current............................................500mA

SEG A–G, DP Source Current .....................................100mA

Continuous Power Dissipation (TA = +85°C)

Narrow Plastic DIP (derate 13.3mW/°C

above +70°C) ............................................................1066mW

Wide SO (derate 11.8mW/°C above +70°C) ...............941mW

Narrow CERDIP (derate 12.5mW/°C above +70°C)... 1000mW

Operating Temperature Ranges (TMIN to TMAX)

MAX7219C_G/MAX7221C_G ............................0°C to +70°C

MAX7219E_G/MAX7221E_G......................... -40°C to +85°C

Storage Temperature Range .............................-65°C to +160°C

Lead Temperature (soldering, 10s) .................................+300°C

(V+ = 5V ±10%, RSET = 9.53kΩ ±1%, TA = TMIN to TMAX, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Operating Supply Voltage

V+

4.0

5.5

Shutdown Supply Current

I+

All digital inputs at V+ or GND, TA = +25°C

150

µA

Operating Supply Current

I+

RSET = open circuit

All segments and decimal point on,

ISEG_ = -40mA

330

Display Scan Rate

fOSC

8 digits scanned

500

800

1300

Digit Drive Sink Current

IDIGIT

V+ = 5V, VOUT = 0.65V

320

Segment Drive Source Current

ISEG

TA = +25°C, V+ = 5V, VOUT = (V+ - 1V)

-30

-40

-45

Segment Current Slew Rate

(MAX7221 only)

ΔISEG/Δt TA = +25°C, V+ = 5V, VOUT = (V+ - 1V)

mA/μs

Segment Drive Current Matching

ΔISEG

3.0

Digit Drive Leakage

(MAX7221 only)

IDIGIT

Digit off, VDIGIT = V+

-10

µA

Segment Drive Leakage

(MAX7221 only)

ISEG

Segment off, VSEG = 0V

µA

Digit Drive Source Current

(MAX7219 only)

IDIGIT

Digit off, VDIGIT = (V+ - 0.3V)

-2

Segment Drive Sink Current

(MAX7219 only)

ISEG

Segment off, VSEG = 0.3V

Absolute Maximum Ratings

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

MAX7219/MAX7221

Serially Interfaced, 8-Digit LED Display Drivers

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