A6818SA

Manufacturer Part NumberA6818SA
DescriptionDIP40
ManufacturerAllegro Micro Systems, Inc.
A6818SA datasheets
 

Specifications of A6818SA

Date_code04+  
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ABSOLUTE MAXIMUM RATINGS
at T
= 25°C
A
Logic Supply Voltage, V
.................. 7.0 V
DD
Driver Supply Voltage, V
................... 60 V
BB
Continuous Output Current Range,
I
......................... -40 mA to +15 mA
OUT
Input Voltage Range,
V
....................... -0.3 V to V
+ 0.3 V
IN
DD
Package Power Dissipation,
P
........................................ See Graph
D
Operating Temperature Range, T
A
(Suffix ‘E–’) .................. -40°C to +85°C
(Suffix ‘K–’) ................ -40°C to +125°C
(Suffix ‘S–’) .................. -20°C to +85°C
Storage Temperature Range,
T
............................... -55°C to +125°C
S
Caution: These CMOS devices have input
static protection (Class 2) but are still
susceptible to damage if exposed to
extremely high static electrical charges.
6818
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
(compared with the older UCN/UCQ5818–F) and a controlled output slew rate.
The CMOS shift register and latches allow direct interfacing with micro-
processor-based systems. With a 3.3 V or 5 V logic supply, typical serial-data
input rates are up to 33 MHz.
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A CMOS serial data output permits cascade connections in applications
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requiring additional drive lines. Similar devices are available as the A6810–
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(10 bits) and A6812– (20 bits).
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The A6818– output source drivers are npn Darlingtons, capable of
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sourcing up to 40 mA. The controlled output slew rate reduces electromag-
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netic noise, which is an important consideration in systems that include
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telecommunications and/or microprocessors and to meet government emis-
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sions regulations. For inter-digit blanking, all output drivers can be disabled
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and all sink drivers turned on with a BLANKING input high. The pnp active
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pull-downs will sink at least 2.5 mA.
Three temperature ranges are available for optimum performance in
commercial (suffix S-), industrial (E-), and extended industrial (K-) applica-
tions. The package style provided is the 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.
The lead (Pb) free versions have 100% matte tin leadframe plating.
FEATURES
Controlled Output Slew Rate
60 V Minimum
Output Breakdown
PNP Active Pull-Downs
Low-Power CMOS Logic
and Latches
Always order by complete part number:
Part Number
Pb-free
A6818EEP
A6818EEP-T
Yes
A6818EEPTR
A6818EEPTR-T
Yes
A6818KEP
A6818KEP-T
Yes
A6818KEPTR
A6818KEPTR-T
Yes
A6818SEP
A6818SEP-T
Yes
A6818SEPTR
A6818SEPTR-T
Yes
High-Speed Data Storage
High Data Input Rate
Low Output-Saturation Voltages
Improved Replacements
for SN75518N, SN75518NF,
UCN5818–, and UCQ5818–
Packing
Ambient Temperature, T
(°C)
27 pieces/tube
–40 to 85
450 pieces/13-in. reel
27 pieces/tube
–40 to 125
450 pieces/13-in. reel
27 pieces/tube
–20 to 85
450 pieces/13-in. reel
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