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PDF A6275 Data sheet ( Hoja de datos )
| Número de pieza | A6275 | |
| Descripción | 8-BIT SERIAL-INPUT/ CONSTANTCURRENT LATCHED LED DRIVER | |
| Fabricantes | Allegro MicroSystems | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de A6275 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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6275
8-BIT SERIAL-INPUT, CONSTANT-
CURRENT LATCHED LED DRIVER
A6275ELW
GROUND 1
SERIAL
DATA IN 2
CLOCK 3 CK
LATCH 4
ENABLE
OUT 0 5
L
OUT 1 6
OUT2 7
OUT3 8
VDD
16
LOGIC
SUPPLY
IO
REGULATOR
15 REXT
SERIAL
14 DATA OUT
REGISTER
LATCHES
OE 13 OUTPUT
ENABLE
12 OUT7
11 OUT6
10 OUT5
9 OUT4
Dwg. PP-029-10
Note that the A6275EA (DIP) and the A6275ELW
(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 ................. 750 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 A6275EA and A6275ELW are specifically designed for LED-
display applications. Each BiCMOS device includes an 8-bit CMOS
shift register, accompanying data latches, and eight 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 150 mA output devices are
available as the A6277EA and A6277ELW; similar 16-bit devices
are available as the A6276EA and A6276ELW.
Two package styles are provided for through-hole DIP (suffix A) or
surface-mount SOIC (suffix LW). Under normal applications, copper
lead frames and low logic-power dissipation allow these devices to
sink maximum rated current through all outputs continuously over the
operating temperature range (90 mA, 0.9 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 Pin-Compatible with TB62705CP
Always order by complete part number, e.g., A6275EA .
1 page  
6275
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 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 
6275
8-BIT SERIAL-INPUT,
CONSTANT-CURRENT
LATCHED LED DRIVER
16
0.280
0.240
A6275EA
Dimensions in Inches
(controlling dimensions)
9
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
16
7.11
6.10
0.775
0.735
0.100
BSC
8
0.005
MIN
0.150
0.115
Dimensions in Millimeters
(for reference only)
9
Dwg. MA-001-16A in
0.355
0.204
10.92
MAX
7.62
BSC
1
1.77
1.15
5.33
MAX
0.39
MIN
0.558
0.356
19.68
18.67
2.54
BSC
8
0.13
MIN
3.81
2.93
Dwg. MA-001-16A 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 25 devices.
www.allegromicro.com
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet A6275.PDF ] | |
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