Rainbow-electronics MAX6971 Manual do Utilizador descarregar pdf (Página 3)

MAX6971

16-Port, 36V Constant-Current LED Driver

_______________________________________________________________________________________ 3

5V TIMING CHARACTERISTICS

(Typical Operating Circuit, V+ = 4.5V to 5.5V, T

= T

MIN

to T

MAX

, unless otherwise noted.) (Notes 1, 2, 3)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX

UNITS

CLK Clock Period t

40 ns

CLK Pulse-Width High t

19 ns

CLK Pulse-Width Low t

19 ns

DIN Setup Time t

4ns

DIN Hold Time t

8ns

DOUT Propagation Delay t

12 32 ns

DOUT Rise and Fall Time

DOUT

= 10pF, 20% to 80% 10 ns

LE Pulse-Width High t

20 ns

LE Setup Time t

10 ns

LE Rising to OUT_ Rising Delay t

LRR

(Note 3) 100 ns

LE Rising to OUT_ Falling Delay t

LRF

(Note 3) 300 ns

CLK Rising to OUT_ Rising Delay

CRR

(Note 3) 100 ns

CLK Rising to OUT_ Falling Delay

CRF

(Note 3) 310 ns

OE Rising to OUT_ Rising Delay

OEH

(Note 3) 100 ns

OE Falling to OUT_ Falling Delay

OEL

(Note 3) 320 ns

LED Output OUT_ Turn-On Fall

Time

80% to 20%, pullup resistor = 65Ω 120 ns

LED Output OUT_ Turn-Off Rise

Time

20% to 80%, pullup resistor = 65Ω 120 ns

Note 1: All parameters tested at T

= +25°C. Specifications over temperature are guaranteed by design.

Note 2: See Figure 3.

Note 3: A 65Ω pullup resistor connected from OUT_ to 5.5V.

1 2 3 4 5 6 7 8 ... 11 12

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