Datasheet

(V+ = 5V ±10%, R
SET
= 9.53kΩ ±1%, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
LOGIC INPUTS
Input Current DIN, CLK,
LOAD, CS
I
IH
, I
IL
V
IN
= 0V or V+ -1 1 µA
Logic High Input Voltage V
IH
3.5 V
Logic Low Input Voltage V
IL
0.8 V
Output High Voltage V
OH
DOUT, I
SOURCE
= -1mA V+ - 1 V
Output Low Voltage V
OL
DOUT, I
SINK
= 1.6mA 0.4 V
Hysteresis Voltage ΔV
I
DIN, CLK, LOAD, CS 1 V
TIMING CHARACTERISTICS
CLK Clock Period t
CP
100 ns
CLK Pulse Width High t
CH
50 ns
CLK Pulse Width Low t
CL
50 ns
CS Fall to SCLK Rise Setup Time
(MAX7221 only)
t
CSS
25 ns
CLK Rise to CS or LOAD Rise
Hold Time
t
CSH
0 ns
DIN Setup Time t
DS
25 ns
DIN Hold Time t
DH
0 ns
Output Data Propagation Delay t
DO
C
LOAD
= 50pF 25 ns
Load-Rising Edge to Next Clock
Rising Edge (MAX7219 only)
t
LDCK
50 ns
Minimum CS or LOAD Pulse
High
t
CSW
50 ns
Data-to-Segment Delay t
DSPD
2.25 ms
Electrical Characteristics (continued)
MAX7219/MAX7221 Serially Interfaced, 8-Digit LED Display Drivers
www.maximintegrated.com
Maxim Integrated │ 3