Datasheet

10-Port Constant-Current LED Drivers and I/O
Expanders with PWM Intensity Control
TIMING CHARACTERISTICS
(Typical Operating Circuit, V+ = 2.25V to 3.6V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V+ = 3.3V, T
A
=
+25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Internal PWM Clock Frequency f
INT
27000 45000
Hz
External PWM Clock Frequency f
OSC
100
kHz
SCLK Clock Period t
CP
38.4
ns
SCLK Pulse Width High t
CH
19 ns
SCLK Pulse Width Low t
CL
19 ns
CS Fall to SCLK Rise Setup Time
t
CSS
9.5 ns
SCLK Rise to CS Rise Hold Time
t
CSH
0ns
DIN Setup Time t
DS
9.5 ns
DIN Hold Time t
DH
0ns
Output Data Propagation Delay t
DO
21 ns
DOUT Output Rise and Fall
Times
t
FT
C
LOAD
= 20pF 10 ns
Minimum CS Pulse High t
CSW
38.4
ns
CS Pulse Low to Not Activate CS
Run
t
CSRUN
CS run enabled
640
µs
CS Pulse Width to Activate CS
Run
t
CSRUN
CS run enabled 3 ms
Note 1: All parameters tested at T
A
= +25°C. Specifications over temperature are guaranteed by design.
Note 2: Guaranteed by design.
Note 3: Port current is factory trimmed to meet a median sink current of 20mA and 10mA over all 10 ports. The ∆I
OUT
specification
guarantees current matching between ports.
MAX6966/MAX6967
4
Maxim Integrated