6809
AND
6810
A6810xA
DABiC-IV, 10-BIT SERIAL-INPUT,
LATCHED SOURCE DRIVERS
The A6809鈥?and A6810鈥?devices combine 10-bit CMOS shift
registers, 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 A6809鈥?and A6810鈥?feature an increased data
input rate (compared with the older UCN/UCQ5810-F) and a con-
trolled output slew rate. The A6809xLW and A6810xLW are identical
except for pinout.
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 avail-able as
the A6811鈥?(12 bits), A6812鈥?(20 bits), and A6818鈥?(32 bits).
The A6809鈥?and A6810鈥?output source drivers are npn Darling-
tons, capable of sourcing up to 40 mA. The controlled output slew rate
reduces electromagnetic 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
BLANKING input high. The pnp active pull-downs will sink at least
2.5 mA.
All devices are available in two temperature ranges for optimum
performance in commercial (suffix S-) or industrial (suffix E-) applica-
tions. The A6810鈥?is provided in three package styles for through-hole
DIP (suffix -A), surface-mount SOIC (suffix -LW), or minimum-area
surface-mount PLCC (suffix -EP). The A6809鈥?is provided in the
SOIC (suffix -LW) only. Copper lead frames, low logic-power dissi-
pation, and low output-saturation voltages allow all devices to source
25 mA from all outputs continuously over the maximum operating
temperature range.
Data Sheet
26182.124B
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
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 TL4810鈥? UCN5810鈥?
I
PNP Active Pull-Downs
and UCQ5810鈥?/div>
Complete part number includes a suffix to identify operating
temperature range (E- or S-) and package type (-A, -EP, or -LW).
Always order by complete part number, e.g.,
A6810SLW
.
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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