LED2472G datasheet(13/39 Pages) STMICROELECTRONICS

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DocID024620 Rev 3

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LED2472G

Switching characteristics

Vdd = 3.3 V, Tj = 25 °C, GRG = “1” (gain reg), Rext = 13 kΩ, unless otherwise specified.

Table 6. Switching characteristics(1)(2)

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

fclk

Clock frequency

Cascade operation

MHz

tr(SDO)

SDO rise time

Rext = 13 kΩ; Iout = 21 mA

Vout = 0.6 V

VIH = VDD; VIL = GND

RL = 56

Ω; CL = 10 pF

CFG-0 = CFG-1 = CFG-2 = “0”

-5-

tf(SDO)

SDO fall time

tPLH2

LE-OUTn(3)

Propagation delay

time (“L” to “H”)

-70-

tPLH3

OE-OUTn(3)

100

tPLH

CLK-SDO

CFG-7 = ‘0’

815

tPHL2

LE-OUTn(3)

Propagation delay

time (“H” to “L”)

-70-

tPHL3

OE-OUTn(3)

-100

tPHL

CLK-SDO

CFG-7= ‘0’

815

tw(CLK)

CLK

Pulse width

tW(OE)OE

150(4)

tw(L)

tgr-d

Gradual delay Ch to Ch

tsu(L)

Setup time for LE

th(L)

Hold time for LE

tsu(D)

Setup time for SDI

th(D)

Hold time for SDI

tor(5)

Maximum CLK rise time

µs

tof(5)

Maximum CLK fall time

Iout-ov

Output current turn-on overshoot

Vout = 0.3 to 3 V

CL = 10 pF; Iout = 5 to 61 mA

tn-err

Normal error detection

minimum output ON time

µs

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