A6277 Просмотр технического описания (PDF) - Allegro MicroSystems
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A6277 Datasheet PDF : 12 Pages
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6277
8-BIT SERIAL-INPUT,
CONSTANT-CURRENT
LATCHED LED DRIVER
SWITCHING CHARACTERISTICS at TA = 25°C, VDD = VIH = 5 V, VCE = 0.4 V, VIL = 0 V,
REXT = 470 Ω, IO = 40 mA, VL = 3 V, RL = 65 Ω, CL = 10.5 pF.
Characteristic
Propagation Delay Time
Propagation Delay Time
Output Fall Time
Output Rise Time
Symbol
tpHL
tpLH
tf
tr
Test Conditions
CLOCK-OUTn
LATCH-OUTn
ENABLE-OUTn
CLOCK-SERIAL DATA OUT1
CLOCK-OUTn
LATCH-OUTn
ENABLE-OUTn
CLOCK-SERIAL DATA OUT2
90% to 10% voltage
10% to 90% voltage
Limits
Min. Typ. Max.
Unit
– 350 1000
ns
– 350 1000
ns
– 350 1000
ns
–
80 110
ns
– 300 1000
ns
– 400 1000
ns
– 380 1000
ns
–
80 110
ns
150 250 1000
ns
150 250 600
ns
RECOMMENDED OPERATING CONDITIONS
Characteristic
Supply Voltage
Output Voltage
Output Current
Logic Input Voltage
Clock Frequency
Symbol
VDD
VO
IO
IOH
IOL
VIH
VIL
fCK
Conditions
Continuous, any one output
SERIAL DATA OUT
SERIAL DATA OUT
Cascade operation
Min. Typ. Max.
4.5 5.0 5.5
–
1.0 4.0
–
– 150
–
– -1.0
–
–
1.0
0.7VDD –
–
–
– 0.3VDD
–
–
10
Unit
V
V
mA
mA
mA
V
V
MHz
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