MAX6978 Maxim Integrated Products, MAX6978 Datasheet - Page 3

• Manufacturer Part Number: MAX6978
• Description: 5.5V Constant-Current LED Driver
• Manufacturer: Maxim Integrated Products

5V TIMING CHARACTERISTICS
(Typical Operating Circuit, V+ = 4.5V to 5.5V, T
CLK Clock Period
CLK Pulse-Width High
CLK Pulse-Width Low
DIN Setup Time
DIN Hold Time
DOUT Propagation Delay
DOUT Rise and Fall Time
LE Pulse-Width High
LE Pulse Width (Fault-Detection
Data Valid)
LE Setup Time
LE Rising to OUT_ Rising Delay
LE Rising to OUT_ Falling Delay
CLK Rising to OUT_ Rising Delay
CLK Rising to OUT_ Falling Delay
OE Rising to OUT_ Rising Delay
OE Falling to OUT_ Falling Delay
LED Output OUT_ Turn-On Fall
Time
LED Output OUT_ Turn-Off Rise
Time
8-Port, 5.5V Constant-Current LED Driver with
PARAMETER
_______________________________________________________________________________________
LED Fault Detection and Watchdog
SYMBOL
t
DR
t
t
t
t
t
t
t
t
t
t
OEH
t
t
t
CRR
CRF
OEL
t
t
LRR
LRF
CH
DH
DO
LW
CP
CL
DS
LF
LS
t
, t
t
r
f
DF
A
= T
C
(Note 2)
(Note 2)
(Note 2)
(Note 2)
80% to 20%
20% to 80%
DOUT
MIN
to T
= 10pF, 20% to 80%
MAX
, unless otherwise noted.) (Note 1)
CONDITIONS
MIN
40
19
19
12
20
20
10
4
8
TYP
MAX
100
280
100
310
100
300
200
120
32
10
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
3