581
1
BiMOS II 12-BIT SERIAL-INPUT,
LATCHED SOURCE DRIVERS
Designed primarily for use with vacuum-fluorescent displays, the
UCN5811A smart power BiMOS II driver features low-output saturation
voltages and high output switching speed. These devices contain CMOS shift
registers, data latches, and control circuitry, and bipolar high-speed sourcing
outputs with DMOS active pull-down circuitry. The high-speed shift register
and data latches allow direct interface with microprocessor-based systems. A
CMOS serial data output enables cascade connections in applications requir-
ing additional drive lines.
The UCN5811A features 60 V and -40 mA output ratings, allowing it to
be used in many other peripheral power driver applications. It can be used as
an improved replacement tor the SN75512B. The Allegro devices do not
require special power-up sequencing.
The UCN5811A has been designed with BiMOS II logic for improved
data entry rates. With a 5 V supply, it will operate to at least 3.3 MHz. At
12 V, higher speeds are possible. Use of this device with TTL may require
the use of appropriate pull-up resistors to ensure a proper input logic high.
This device is supplied in a 20-pin plastic dual in-line package. It can be
operated over the ambient temperature range of -20°C to +85°C. Copper lead
frames and low output saturation voltages allow all outputs to be operated at
25 mA continuously at ambient temperatures of up to 76°C.
Data Sheet
26182.20B
OUT
11
OUT
12
BLANKING
SERIAL
DATA OUT
SERIAL
DATA IN
LOGIC
SUPPLY
CLOCK
STROBE
OUT
1
OUT
2
1
2
3
4
BLNK
20
19
18
17
OUT
10
OUT
9
OUT
8
OUT
7
LOAD
SUPPLY
GROUND
OUT
6
OUT
5
OUT
4
OUT
3
REGISTER
LATCHES
5
6
7
8
9
10
V
DD
CLK
ST
V
BB
16
15
14
13
12
11
Dwg. PP-029-5
FEATURES
ABSOLUTE MAXIMUM RATINGS
at
T
A
= 25
°
C
Logic Supply Voltage,V
DD
..................... 15 V
Driver Supply Voltage, V
BB
................... 60 V
Continuous Output Current,
I
OUT
......................... -40 mA to +25 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
................................. -20
°
C to +85
°
C
Storage Temperature Range,
T
S
............................... -55
°
C to +150
°
C
I
I
I
I
I
I
To 3.3 MHz Data Input Rate
Low-Power CMOS Logic and Latches
High-Speed Source Drivers
Active Pull-Downs
Low-Output Saturation Voltages
Improved Replacement for SN75512B
Always order by complete part number:
UCN5811A
.
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
