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PDF A6276 Data sheet ( Hoja de datos )

Número de pieza A6276
Descripción 16-BIT SERIAL-INPUT/ CONSTANTCURRENT LATCHED LED DRIVER
Fabricantes Allegro MicroSystems 
Logotipo Allegro MicroSystems Logotipo



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No Preview Available ! A6276 Hoja de datos, Descripción, Manual

6276
16-BIT SERIAL-INPUT, CONSTANT-
CURRENT LATCHED LED DRIVER
A6276ELW
GROUND 1
SERIAL
DATA IN 2
CLOCK 3 CK
LATCH 4
ENABLE
OUT 0 5
L
OUT 1 6
OUT2 7
OUT3 8
OUT 4 9
OUT5 10
OUT 6 11
OUT 7 12
VDD
24
LOGIC
SUPPLY
IO
REGULATOR
23 REXT
SERIAL
22 DATA OUT
REGISTER
LATCHES
OE 21 OUTPUT
ENABLE
20 OUT15
19 OUT14
18 OUT13
17 OUT12
16 OUT 11
15 OUT 10
14 OUT 9
13 OUT8
Dwg. PP-029-11
Note that the A6276EA (DIP) and the A6276ELW
(SOIC) are electrically identical and share a
common terminal number assignment.
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VDD ...................... 7.0 V
Output Voltage Range,
VO ............................ -0.5 V to +17 V
Output Current, IO ........................ 90 mA
Ground Current, IGND ............... 1475 mA
Input Voltage Range,
VI .................... -0.4 V to VDD + 0.4 V
Package Power Dissipation,
PD ..................................... See Graph
Operating Temperature Range,
TA ............................. -40°C to +85°C
Storage Temperature Range,
TS ........................... -55°C to +150°C
Caution: These CMOS devices have input
static protection (Class 2) but are still suscep-
tible to damage if exposed to extremely high
static electrical charges.
The A6276EA and A6276ELW are specifically designed for LED-
display applications. Each BiCMOS device includes a 16-bit CMOS
shift register, accompanying data latches, and 16 npn constant-current
sink drivers. Except for package style and allowable package power
dissipation, the two devices are identical.
The CMOS shift register and latches allow direct interfacing with
microprocessor-based systems. With a 5 V logic supply, typical serial
data-input rates are up to 20 MHz. The LED drive current is deter-
mined by the user’s selection of a single resistor. A CMOS serial data
output permits cascade connections in applications requiring additional
drive lines. For inter-digit blanking, all output drivers can be disabled
with an ENABLE input high. Similar 8-bit devices are available as the
A6275EA and A6275ELW.
Two package styles are provided for through-hole DIP (suffix A) or
surface-mount SOIC (suffix LW). Under normal applications, a copper
lead frame and low logic-power dissipation allow the dual in-line
package to sink maximum rated current through all outputs continu-
ously over the operating temperature range (90 mA, 0.75 V drop,
+85°C). Both devices are also available for operation over the standard
temperature range of -20°C to +85°C. To order, change the suffix
letter ‘E’ to ‘S’.
FEATURES
s To 90 mA Constant-Current Outputs
s Under-Voltage Lockout
s Low-Power CMOS Logic and Latches
s High Data Input Rate
s Functional Replacement for TB62706BN/BF
Always order by complete part number, e.g., A6276EA .

1 page




A6276 pdf
6276
16-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 , IO = 40 mA, VL = 3 V, RL = 65 , 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 OUT
CLOCK-OUTn
LATCH-OUTn
ENABLE-OUTn
CLOCK-SERIAL DATA OUT
90% to 10% voltage
10% to 90% voltage
Min.
150
150
Limits
Typ. Max.
350 1000
350 1000
350 1000
40 –
300 1000
300 1000
300 1000
40 –
350 1000
300 600
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
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
– – 90
– – -1.0
– – 1.0
0.7VDD
-0.3
– VDD + 0.3
– 0.3VDD
– 10
Unit
V
V
mA
mA
mA
V
V
MHz
www.allegromicro.com
5

5 Page





A6276 arduino
6276
16-BIT SERIAL-INPUT,
CONSTANT-CURRENT
LATCHED LED DRIVER
24
0.280
0.240
A6276EA
Dimensions in Inches
(controlling dimensions)
13
0.014
0.008
0.430
MAX
0.300
BSC
1
0.070
0.045
0.210
MAX
0.015
MIN
0.022
0.014
24
7.11
6.10
1.280
1.230
12
0.100
0.005
BSC
MIN
0.150
0.115
Dimensions in Millimeters
(for reference only)
13
Dwg. MA-001-24 in
0.355
0.204
10.92
MAX
7.62
BSC
5.33
MAX
1
1.77
1.15
6
7
32.51
31.24
0.39
MIN
0.558
0.356
12
2.54
0.13
BSC
MIN
3.81
2.93
Dwg. MA-001-24 mm
NOTES: 1. Exact body and lead configuration at vendor’s option within limits shown.
2. Lead spacing tolerance is non-cumulative
3. Lead thickness is measured at seating plane or below.
4. Supplied in standard sticks/tubes of 15 devices.
www.allegromicro.com
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