Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+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
(V+ = 5V ±10%, R
SET
= 9.53kΩ ±1%, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
Operating Supply Voltage
Shutdown Supply Current
Operating Supply Current
Display Scan Rate
Digit Drive Sink Current
Segment Drive Source Current
Segment Current Slew Rate
(MAX7221 only)
Segment Drive Current Matching
Digit Drive Leakage
(MAX7221 only)
Segment Drive Leakage
(MAX7221 only)
Digit Drive Source Current
(MAX7219 only)
Segment Drive Sink Current
(MAX7219 only)
SYMBOL
V+
I+
I+
f
OSC
I
DIGIT
I
SEG
∆I
SEG
/∆t
∆I
SEG
I
DIGIT
I
SEG
I
DIGIT
I
SEG
Digit off, V
DIGIT
= V+
Segment off, V
SEG
= 0V
Digit off, V
DIGIT
= (V+ - 0.3V)
Segment off, V
SEG
= 0.3V
-2
5
All digital inputs at V+ or GND, T
A
= +25°C
R
SET
= open circuit
All segments and decimal point on,
I
SEG_
= -40mA
8 digits scanned
V+ = 5V, V
OUT
= 0.65V
T
A
= +25°C, V+ = 5V, V
OUT
= (V+ - 1V)
T
A
= +25°C, V+ = 5V, V
OUT
= (V+ - 1V)
500
320
-30
10
-40
20
3.0
-10
1
-45
50
330
800
1300
CONDITIONS
MIN
4.0
TYP
MAX
5.5
150
8
mA
Hz
mA
mA
mA/µs
%
µA
µA
mA
mA
UNITS
V
µA
http://www.hgsemi.com.cn
2
2018 AUG
MAX7219/MAX7221
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 5V ±10%, R
SET
=9.53kΩ ±1%, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
LOGIC INPUTS
Input Current DIN, CLK,
LOAD,
CS
Logic High Input Voltage
Logic Low Input Voltage
Output High Voltage
Output Low Voltage
Hysteresis Voltage
TIMING CHARACTERISTICS
CLK Clock Period
CLK Pulse Width High
CLK Pulse Width Low
CS
Fall to SCLK Rise Setup Time
(MAX7221 only)
CLK Rise to
CS
or LOAD Rise
Hold Time
DIN Setup Time
DIN Hold Time
Output Data Propagation Delay
Load-Rising Edge to Next Clock
Rising Edge (MAX7219 only)
Minimum
CS
or LOAD Pulse
High
Data-to-Segment Delay
t
CP
t
CH
t
CL
t
CSS
t
CSH
t
DS
t
DH
t
DO
t
LDCK
t
CSW
t
DSPD
C
LOAD
= 50pF
50
50
2.25
100
50
50
25
0
25
0
25
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
I
IH
, I
IL
V
IH
V
IL
V
OH
V
OL
∆V
I
DOUT, I
SOURCE
= -1mA
DOUT, I
SINK
= 1.6mA
DIN, CLK, LOAD,
CS
1
V+ - 1
0.4
V
IN
= 0V or V+
-1
3.5
0.8
1
µA
V
V
V
V
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
http://www.hgsemi.com.cn
3
2018 AUG
MAX7219/MAX7221
Typical
Operating Characteristics
(V+ = +5V, T
A
= +25°C, unless otherwise noted.)
SCAN FREQUENCY vs.
POSITIVE SUPPLY VOLTAGE
MAX7219/21 01
SEGMENT DRIVER OUTPUT CURRENT
vs. OUTPUT VOLTAGE
MAX7219/21 02
830
820
810
SCAN FREQUENCY (Hz)
800
790
780
770
760
750
740
730
4.0
4.4
4.8
5.2
5.6
70
60
OUTPUT CURRENT (mA)
R
SET
= 10kΩ
50
40
30
20
10
0
R
SET
= 20kΩ
R
SET
= 40kΩ
6.0
0
1
2
3
4
5
POSITIVE SUPPLY VOLTAGE (V)
OUTPUT VOLTAGE (V)
MAX7219
SEGMENT OUTPUT CURRENT
MAX7219/21 03
MAX7221
SEGMENT OUTPUT CURRENT
MAXIMUM INTENSITY = 15/16
MAX7219/21 04
MAXIMUM INTENSITY = 31/32
10mA/div
10mA/div
0
0
5µs/div
5µs/div
http://www.hgsemi.com.cn
4
2018 AUG
MAX7219/MAX7221
Pin Description
PIN
1
2, 3, 5–8,
10, 11
4, 9
NAME
DIN
DIG 0–DIG 7
GND
LOAD
(MAX7219)
CS
(MAX7221)
CLK
FUNCTION
Serial-Data Input. Data is loaded into the internal 16-bit shift register on CLK’s rising edge.
Eight-Digit Drive Lines that sink current from the display common cathode. The MAX7219 pulls
the digit outputs to V+ when turned off. The MAX7221’s digit drivers are high-impedance when
turned off.
Ground (both GND pins must be connected)
Load-Data Input. The last 16 bits of serial data are latched on LOAD’s rising edge.
Chip-Select Input. Serial data is loaded into the shift register while
CS
is low. The last 16 bits of
serial data are latched on
CS’s
rising edge.
Serial-Clock Input. 10MHz maximum rate. On CLK’s rising edge, data is shifted into the inter-
nal shift register. On CLK’s falling edge, data is clocked out of DOUT. On the MAX7221, the
CLK input is active only while
CS
is low.
Seven Segment Drives and Decimal Point Drive that source current to the display. On the
MAX7219, when a segment driver is turned off it is pulled to GND. The MAX7221 segment dri-
vers are high-impedance when turned off.
Connect to V
DD
through a resistor (R
SET
) to set the peak segment current (Refer to
Selecting
R
SET
Resistor
section).
Positive Supply Voltage. Connect to +5V.
Serial-Data Output. The data into DIN is valid at DOUT 16.5 clock cycles later. This pin is used
to daisy-chain several MAX7219/MAX7221’s and is never high-impedance.
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