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6818 반도체 회로 부품 판매점

DABiC-IV/ 32-BIT SERIAL-INPUT/ LATCHED SOURCE DRIVER



Allegro MicroSystems 로고
Allegro MicroSystems
6818 데이터시트, 핀배열, 회로
6818
A6818xA
LOAD
SUPPLY
1
VBB
SERIAL
DATA OUT
2
OUT 32 3
OUT 31 4
OUT 30 5
OUT 29 6
OUT 28 7
OUT27 8
OUT26 9
OUT25 10
OUT 24 11
OUT 23 12
OUT22 13
OUT21 14
OUT 20 15
OUT19 16
OUT 18 17
OUT17 18
BLANKING 19 BLNK
GROUND 20
VDD
40
LOGIC
SUPPLY
39
SERIAL
DATA IN
38 OUT 1
37 OUT 2
36 OUT 3
35 OUT 4
34 OUT5
33 OUT 6
32 OUT7
31 OUT8
30 OUT9
29 OUT 10
28 OUT 11
27 OUT 12
26 OUT 13
25 OUT 14
24 OUT 15
23 OUT 16
ST 22 STROBE
CLK 21 CLOCK
Dwg. PP-029-4
ABSOLUTE MAXIMUM RATINGS
at TA = 25°C
Logic Supply Voltage, VDD ................... 7.0 V
Driver Supply Voltage, VBB ................... 60 V
Continuous Output Current Range,
IOUT ......................... -40 mA to +15 mA
Input Voltage Range,
VIN ....................... -0.3 V to VDD + 0.3 V
Package Power Dissipation,
PD ........................................ See Graph
Operating Temperature Range, TA
(Suffix ‘E–’) .................. -40°C to +85°C
(Suffix ‘S–’) .................. -20°C to +85°C
Storage Temperature Range,
TS ............................... -55°C to +125°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.
DABiC-IV, 32-BIT SERIAL-INPUT,
LATCHED SOURCE DRIVER
The A6818– devices combine a 32-bit CMOS shift register,
accompanying data latches and control circuitry with bipolar sourcing
outputs and pnp active pull downs. Designed primarily to drive
vacuum-fluorescent displays, the 60 V and -40 mA output ratings also
allow these devices to be used in many other peripheral power driver
applications. The A6818– features an increased data input rate (com-
pared with the older UCN/UCQ5818–F) and a controlled output slew
rate.
The CMOS shift register and latches allow direct interfacing with
microprocessor-based systems. With a 3.3 V or 5 V logic supply,
typical serial-data input rates are up to 33 MHz.
A CMOS serial data output permits cascade connections in applica-
tions requiring additional drive lines. Similar devices are available as
the A6809– and A6810– (10 bits), A6811– (12 bits), and A6812– (20
bits).
The A6818– output source drivers are npn Darlingtons, capable of
sourcing up to 40 mA. The controlled output slew rate reduces electro-
magnetic noise, which is an important consideration in systems that
include telecommunications and/or microprocessors and to meet
government emissions regulations. For inter-digit blanking, all output
drivers can be disabled and all sink drivers turned on with a BLANK-
ING input high. The pnp active pull-downs will sink at least 2.5 mA.
Two temperature ranges are available for optimum performance in
commercial (suffix S-) or industrial (suffix E-) applications. Package
styles are provided for through-hole DIP (suffix -A) or minimum-area
surface-mount PLCC (suffix -EP). Copper lead frames, low logic-
power dissipation, and low output-saturation voltages allow these
devices to drive most multiplexed vacuum-fluorescent displays over
the maximum operating temperature range.
FEATURES
I Controlled Output Slew Rate I Low Output-Saturation Voltages
I High-Speed Data Storage I Low-Power CMOS Logic
I 60 V Minimum
and Latches
Output Breakdown
I Improved Replacements
I High Data Input Rate
for SN75518N, SN75518NF,
I PNP Active Pull-Downs
UCN5818, and UCQ5818
Complete part number includes a suffix to identify operating
temperature range (E- or S-) and package type (-A or -EP). Always
order by complete part number, e.g., A6818SEP .


6818 데이터시트, 핀배열, 회로
6818
32-BIT SERIAL-INPUT,
LATCHED SOURCE DRIVER
TYPICAL INPUT CIRCUIT
VDD
IN
Dwg. EP-010-5
A6818xEP
OUT29 7
8
9
10
11
12
13
14
15
16
OUT19 17
2
OUT 8
39 OUT 4
38
37
36
35
34
1393
32
31
30 OUT13
29 NC
TYPICAL OUTPUT DRIVER
V BB
OUTN
Dwg. EP-021-19
3.0
Dwg. PP-059-2
2.5 SUFFIX 'A', RθJA = 36°C/W
2.0
1.5
SUFFIX 'EP', RθJA = 46°C/W
1.0
0.5
0
25 50 75 100 125 150
AMBIENT TEMPERATURE IN °C
Dwg. GP-025A
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1998, 2000 Allegro MicroSystems, Inc.




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6818 driver

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