參數(shù)資料
型號(hào): A6277EA
廠商: Allegro MicroSystems, Inc.
元件分類: LED驅(qū)動(dòng)器
英文描述: 8-BIT SERIAL-INPUT, CONSTANTCURRENT LATCHED LED DRIVER
中文描述: 8位串行輸入,CONSTANTCURRENT鎖存LED驅(qū)動(dòng)
文件頁數(shù): 9/12頁
文件大小: 203K
代理商: A6277EA
6277
8-BIT SERIAL-INPUT,
CONSTANT-CURRENT
LATCHED LED DRIVER
www.allegromicro.com
9
TERMINAL DESCRIPTION
Terminal No.
1
2
3
4
5
Terminal Name
LOGIC GROUND
SERIAL DATA IN
CLOCK
LATCH ENABLE
HIGH/LOW
(CURRENT)
POWER GROUND
OUT
0-7
POWER GROUND
OUTPUT ENABLE
Function
Reference terminal for control logic.
Serial-data input to the shift-register.
Clock input terminal for data shift on rising edge.
Data strobe input terminal; serial data is latched with high-level input.
Logic low for 100% of programmed current level;
logic high for 50% of programmed current level.
Ground.
The eight current-sinking output terminals.
Ground.
When (active) low, the output drivers are enabled; when high, all output
drivers are turned OFF (blanked).
CMOS serial-data output (on clock falling edge).
CMOS serial-data output (on clock rising edge)
to the following shift-registers.
An external resistor at this terminal establishes the output current for all sink
drivers.
(V
DD
) The logic supply voltage.
Typically 5 V.
6
7-14
15
16
17
18
SERIAL OUT
2
SERIAL OUT
1
19
R
EXT
20
LOGIC SUPPLY
The products described here are manufactured under one or more
U.S. patents or U.S. patents pending.
Allegro MicroSystems, Inc. reserves the right to make, from time to
time, such departures from the detail specifications as may be
required to permit improvements in the performance, reliability, or
manufacturability of its products. Before placing an order, the user is
cautioned to verify that the information being relied upon is current.
Allegro products are not authorized for use as critical components
in life-support devices or systems without express written approval.
The information included herein is believed to be accurate and
reliable. However, Allegro MicroSystems, Inc. assumes no responsi-
bility for its use; nor for any infringement of patents or other rights of
third parties which may result from its use.
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