6276 Datasheet PDF | Allegro MicroSystems





(PDF) 6276 Datasheet PDF

Part Number 6276
Description 16-BIT SERIAL-INPUT/ CONSTANTCURRENT LATCHED LED DRIVER
Manufacture Allegro MicroSystems
Total Page 12 Pages
PDF Download Download 6276 Datasheet PDF

Features: Data Sheet 26185.201B† 6276 16-BIT SE RIAL-INPUT, CONSTANTCURRENT LATCHED LED DRIVER A6276ELW GROUND SERIAL DATA IN CLOCK LATCH ENABLE OUT 0 OUT 1 OUT 2 OU T 3 OUT 4 OUT 5 OUT 6 OUT 7 1 2 3 4 5 6 7 8 9 10 11 12 CK L REGISTER LATCHES 2 0 19 18 17 16 15 14 13 OE VDD IO REGULA TOR 24 23 22 21 LOGIC SUPPLY REXT SERIA L DATA OUT OUTPUT ENABLE OUT 15 OUT 14 OUT 13 OUT 12 OUT 11 OUT 10 OUT 9 OUT 8 The A6276EA and A6276ELW are specific ally designed for LEDdisplay applicatio ns. Each BiCMOS device includes a 16-bi t CMOS shift register, accompanying dat a latches, and 16 npn constant-current sink drivers. Except for package style and allowable package power dissipation , the two devices are identical. The CM OS shift register and latches allow dir ect interfacing with microprocessor-bas ed systems. With a 5 V logic supply, ty pical serial data-input rates are up to 20 MHz. The LED drive current is deter mined by the user’s selection of a si ngle resistor. A CMOS serial data output permits cascade connection.

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6276 datasheet
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 .

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