Serially Interfaced, 8-Digit LED Display Drivers
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
MAX7219/MAX7221
_______________________________________________________________________________________
3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
