Data Sheet
26185.201C
6276
16-BIT SERIAL-INPUT, CONSTANT-
CURRENT LATCHED LED DRIV ER
Always order by complete part number, e.g., A6276EA .
The A6276 is specifically designed for LED-display applications.
Each BiCMOS device includes a 16-bit CMOS shift register, accom-
panying data latches, and 16 npn constant-current sink drivers. Except
for package style and allowable package power dissipation, the device
options 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 de ter -
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.
Three package styles are provided: through-hole DIP (suffix A),
surface-mount SOIC (suffix LW) and TSSOP with exposed thermal pad
(suffix LP). Under normal applications, a copper lead frame and low
logic-power dissipation allow the dual in-line package to sink maxi-
mum rated current through all outputs con tin u ous ly over the operating
temperature range (90 mA, 0.75 V drop, +85°C). The DIP and SOIC
packages 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’.
Note that three packages offered are electrically
identical and share a common terminal number as-
signment.
ABSOLUTE MAXI MUM 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 sus cep ti ble
to damage if exposed to extremely high static
electrical charges.
FEATURES
■To 90 mA Constant-Current Outputs
■Under-Voltage Lockout
■Low-Power CMOS Logic and Latches
■High Data Input Rate
■Functional Replacement for TB62706BN/BF
Note that the A6276EA (DIP) and the A6276ELW
A6276ELW
GROUND
REGISTER
LATCHES
1
2
3
817
18
19
20
21
23
4
5
6
7
22
24
SERIAL
DATA OUT
LOGIC
SUPPLY
SERIAL
DATA IN
OUTPUT
ENABLE
LATCH
ENABLE
CLOCK CK
V
DD
OE
OUT
1
OUT
2
OUT
0
OUT
12
OUT
14
OUT
13
OUT
3
OUT
15
R
EXT
I
REGULATOR
L
O
12
9
10
11
OUT
5
OUT
6
OUT
4
OUT
7
13
14
15
16
Dwg. PP-029-11
OUT
8
OUT
10
OUT
9
OUT
11