Data Sheet
26182.124D*
6810
DABiC-IV, 10-BIT SERIAL-INPUT,
LATCHED SOURCE DRIVER
A6810xA
The A6810鈥?devices combine 10-bit CMOS shift registers, accom-
panying 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 applica-
tions. The A6810鈥?feature an increased data input rate (compared with
the older UCN/UCQ5810-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,
serial-data input rates of at least 10 MHz .
A CMOS serial data output permits cascade connections in applica-
tions requiring additional drive lines. Similar devices are available as
the A6812鈥?(20 bits) and A6818鈥?(32 bits).
The A6810鈥?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.
The A6810鈥?are available in two temperature ranges for optimum
performance in commercial (suffix S-) or industrial (suffix E-) applica-
tions. They are provided in two package styles for through-hole DIP
(suffix -A) or minimum-area surface-mount SOIC (suffix -LW).
Copper lead frames, low logic-power dissipation, and low output-
saturation voltages allow all devices to source 25 mA from all outputs
continuously over the maximum operating temperature range.
OUT
8
OUT
7
OUT
6
CLOCK
GROUND
LOGIC
SUPPLY
STROBE
OUT
5
OUT
4
1
2
3
LATCHES
4
5
6
7
8
9
V
DD
ST
CLK
REGISTER
REGISTER
LATCHES
18
17
16
V
BB
15
14
BLNK
13
12
11
10
OUT
9
OUT
10
SERIAL
DATA OUT
LOAD
SUPPLY
SERIAL
DATA IN
BLANKING
OUT
1
OUT
2
OUT
3
Dwg. PP-029
ABSOLUTE MAXIMUM RATINGS
at T
A
= 25
擄
C
Logic Supply Voltage, V
DD
...................
7.0 V
Driver Supply Voltage, V
BB
...................
60 V
Continuous Output Current Range,
I
OUT
.........................
-40 mA to +15 mA
Input Voltage Range,
V
IN
.......................
-0.3 V to V
DD
+ 0.3 V
Package Power Dissipation,
P
D
........................................
See Graph
Operating Temperature Range, T
A
(Suffix 鈥楨鈥撯€? ..................
-40
擄
C to +85
擄
C
(Suffix 鈥楽鈥撯€? ..................
-20
擄
C to +85
擄
C
Storage Temperature Range,
T
S
...............................
-55
擄
C to +125
擄
C
FEATURES
s
Controlled Output Slew Rate
s
High-Speed Data Storage
s
60 V Minimum
s
Improved Replacements
Output Breakdown
for TL4810鈥? UCN5810鈥?
s
High Data Input Rate
and UCQ5810鈥?/div>
s
PNP Active Pull-Downs
s
Low Output-Saturation Voltages
s
Low-Power CMOS Logic
and Latches
Caution: These CMOS devices have input
static protection (Class 2) but are still
susceptible to damage if exposed to
extremely high static electrical charges.
Complete part number includes a suffix to identify operating
temperature range (E- or S-) and package type (-A or -LW). Always
order by complete part number, e.g.,
A6810SLW
.
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