456
7
8
9
10
11
23
DD
V
BB
LOAD SUPPLY SERIAL DATA INLOGIC SUPPLYOUT
30
NC
44
1
SERIAL DATA OUT
12
OUT
1
2
OUT8
OUT
29
OUT
36
37
38
39
19
34
35
OUT 4
OUT
13
32
33
29
30
31
NC
18 19 20 21 22
STCLK
OUT
16
OUT
17
CLOCK
STROBE
GROUND
BLANKING
23 24
OUT
15
25 26
Dwg. PP-059-2
OUT
14
27 28
NC
OUT
18
NC
BLNK
13
14
15
16
17
4243
V
4041
OUT
3
OUT
2
OUT
32
OUT
31
REGISTER LATCHESLATCHES REGISTER
19
Designed primarily for use with vacuum-fluorescent displays, the
UCN5818AF and UCN5818EPF smart power BiMOS II drivers combine
CMOS shift registers, data latches, and control circuitry, with bipolar high-
speed sourcing outputs and DMOS active pull-down circuitry. The high-
speed shift register and data latches allow direct interfacing with microproces-
sor LSI-based systems. A CMOS serial data output enables cascade connec-
tions in applications requiring additional drive lines. Both devices feature
60 V and -40 mA output ratings, allowing them to be used in many other
peripheral power driver applications.
These smart power drivers have 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 these devices with TTL
may require the use of appropriate pull-up resistors to ensure an input logic
high. All devices can be operated over the ambient temperature range of -
20°C to +85°C. The UCN5818AF is supplied in a 40-pin plastic dual in-line
package with 0.600" (15.24 mm) row spacing. A copper lead frame, reduced
supply current requirement, and low output saturation voltage permits
operation with minimum junction temperature rise. The ‘A’ package allows
all 32 outputs to be operated at -25 mA continuously over the operating
temperature range.
For high-density packaging applications, the UCN5818EPF is furnished
in a 44-lead plastic chip carrier (quad pack) for surface mounting on solder
lands with 0.050" (1.27 mm) centers. The PLCC allows -25 mA continuous
operation of all outputs simultaneously at ambient temperatures to 60°C.
Similar devices are available as the UCN5810AF/LWF (10 bits), UCN5811A
(12 bits), and UCN5812AF/EPF (20 bits).
UCN5818EPF
BiMOS II 32-BIT SERIAL-INPUT, LATCHED
SOURCE DRIVERS WITH ACTIVE-DMOS PULL-DOWNS
Always order by complete part number, e.g., UCN5818EPF .
FEATURES
a73 60 V Source Outputs
a73 High-Speed Source Drivers
a73 To 3.3 MHz Data Input Rate
a73 Low-Output Saturation Voltages
a73 Active DMOS Pull-Downs
a73 Low-Power CMOS Logic
and Latches
a73 Reduced Supply Current
Requirements
a73 Improved Replacements for
SN75518N/FN
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 +15 mA
Input Voltage Range,
V
IN
....................... -0.3 V to V
DD
+ 0.3 V
Package Power Dissipation, P
D
(UCN5818AF) ............................ 3.5 W*
(UCN5818EPF) ......................... 2.7 W†
Operating Temperature Range,
T
A
................................. -20°C to +85°C
Storage Temperature Range,
T
S
............................... -55°C to +150°C
* Derate at rate of 28 mW/°C above T
A
= +25°C
† Derate at rate of 22 mW/°C above T
A
= +25°C
Caution: CMOS devices have input static
protection but are susceptible to damage when
exposed to extremely high static electrical
charges.
Data Sheet
26182.28C
5818-F