點晶科技股�½有限公司
SILICON TOUCH TECHNOLOGY INC.
DM115B
Switching Characteristics
(Ta = 25
��C
unless otherwise noted)
CHARACTERISTIC
Propagation ENABLE-OUT0
Delay Time
(“L” to “H”) CLK-SOUT
Propagation ENABLE-OUT0
Delay Time
(“H” to “L”) CLK-SOUT
Output Current Rise Time
Output Current Fall Time
SYMBOL
CONDITION
VDD=5.0V
VIH=VDD
VIL=GND
REXT=630Ω
VL=5.0V
RL=150Ω
CL=15pF
MIN.
⎯
⎯
⎯
⎯
⎯
⎯
TYP.
66
16
81
16
30
32
MAX.
132
20
162
20
60
50
UNIT
ns
ns
ns
ns
tp
LH
tp
HL
t
or
t
of
Note: (Delay between outputs)
The DM115B also incorporated the delay unit between outputs. The delay time is 4 ns(typ.), out7 has no delay,
out5 has 4 ns delay, out 3 has 8 ns delay, and then out 1, out 0, out 2, out 4, out6. The delay is to prevent large current
impulse.
8-BIT CONSTANT CURRENT LED DRIVERS with 3.3V~5V supply voltage
Version:A.001
Page 7
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