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A6276ELWTR-T

更新时间: 2024-01-07 22:44:33
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急速微 - ALLEGRO 输入元件
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14页 342K
描述
16-BIT SERIAL-INPUT, CONSTANT CURRENT LATCHED LED DRIV ER

A6276ELWTR-T 数据手册

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6276  
16-BIT SERIAL-INPUT, CONSTANT-  
CURRENT LATCHED LED DRIVER  
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 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.  
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 continuously over the operating  
temperature range (90 mA, 0.75 V drop, +85°C).  
A6276ELW  
LOGIC  
S UPPLY  
V
GR OUND  
1
2
3
4
24  
23  
22  
21  
20  
DD  
S E R IAL  
DATA IN  
I
O
R
E XT  
R E GULATOR  
S E R IAL  
DATA OUT  
CLOCK  
CK  
L
LATCH  
E NABLE  
OUTPUT  
E NABLE  
OE  
R E GIS TE R  
LATCHE S  
OUT  
0
OUT  
15  
5
6
19 OUT  
OUT  
14  
1
18  
17  
OUT  
OUT  
OUT  
OUT  
OUT  
OUT  
OUT  
OUT  
7
8
2
3
4
5
6
7
13  
12  
11  
10  
9
9
16 OUT  
15 OUT  
14 OUT  
13 OUT  
10  
11  
12  
8
Dwg. PP-029-11  
Note that three packages offered are electrically  
identical and share a common terminal number as-  
signment.  
FEATURES  
To 90 mA Constant-Current Outputs  
Under-Voltage Lockout  
Low-Power CMOS Logic and Latches  
High Data Input Rate  
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,  
Functional Replacement for TB62706BN/BF  
Selection Guide  
Ambient  
Temperature (°C)  
–40 to 85  
Part Number Pb-free*  
Package  
Packing  
A6276EA-T  
A6276ELP-T  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
24-pin DIP  
24-pin TSSOP  
15 per tube  
62 per tube  
–40 to 85  
–40 to 85  
–40 to 85  
–40 to 85  
–20 to 85  
–20 to 85  
A6276ELPTR-T  
A6276ELW-T  
A6276ELWTR-T  
A6276SLW-T  
A6276SLWTR-T  
24-pin TSSOP 4000 per reel  
24-pin SOICW 31 per tube  
24-pin SOICW 1000 per reel  
24-pin SOICW 31 per tube  
24-pin SOICW 1000 per reel  
TA ............................. -40°C to +85°C  
Storage Temperature Range,  
*Pb-based variants are being phased out of the product line. The variants cited in this  
footnote are in production but have been determined to be NOT FOR NEW DESIGN.  
This classification indicates that sale of this device is currently restricted to existing  
customer applications. The variants should not be purchased for new design applica-  
tions because obsolescence in the near future is probable. Samples are no longer  
available. Status change: May 1, 2006. These variants include:A6276EA, A6276ELW,  
A6276ELWTR, A6276SA, A6276SLW, and A6276SLWTR.  
TS ........................... -55°C to +150°C  
Caution: These CMOS devices have input static  
protection (Class 2) but are still susceptible  
to damage if exposed to extremely high static  
electrical charges.  

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