Allegro UCQ5815EP, UCQ5815A Datasheet
Designed primarily for use with high-voltage vacuum-fluorescent
displays, the UCN5815A and UCN5815EP BiMOS II integrated
circuits consist of eight npn Darlington source drivers with output pulldown resistors, a CMOS latch for each driver, and common STROBE,
BLANKING, and ENABLE functions.
BiMOS II devices have considerably better data-input rates than
the original BiMOS circuits. With a 5 V logic supply, they will operate
to at least 4.4 MHz. With a 12 V supply, significantly higher speeds
are obtained. The CMOS inputs cause minimum loading and are
compatible with standard CMOS and NMOS logic commonly found in
microprocessor designs. TTL circuits may require the use of appropriate pull-up resistors.
The bipolar outputs may be used as segment, dot (matrix), bar, or
digit drivers in vacuum-fluorescent displays. All eight outputs can be
activated simultaneously at ambient temperatures in excess of 75°C.
To simplify printed wiring board layout, output connections are
opposite the inputs. A minimum component display subsystem,
requiring few or no discrete components, can be assembled using the
UCN5815A/EP with the UCN5810AF/EPF/LWF, UCN5812AF/EPF,
or UCN5818AF/EPF serial-to-parallel latched drivers.
Suffix ‘A’ devices are furnished in a standard 22-pin plastic DIP;
suffix ‘EP’ indicates a 28-lead PLCC.
BiMOS II 8-BIT
LATCHED SOURCE DRIVERS
UCN5815A
FEATURES
■ To 4.4 MHz Date-lnput Rate
■ High-Voltage Source Outputs
■ CMOS, NMOS, TTL Compatible Inputs
■ Low-Power CMOS Latches
■ Internal Pull-Down Resistors
■ Wide Supply-Voltage Range
Always order by complete part number:
Part Number Package
UCN5815A 22-Pin DIP
UCN5815EP 28-Lead PLCC
ABSOLUTE MAXIMUM RATINGS
at +25°C Free-Air Temperature
Output Voltage, V
OUT
. . . . . . . . . . . . . . 60 V
Logic Supply Voltage Range,
V
DD
. . . . . . . . . . . . . . . . . . 4.5 V to 15 V
Load Supply Voltage Range,
VBB. . . . . . . . . . . . . . . . . . 5.0 V to 60 V
Input Voltage Range,
VIN . . . . . . . . . . . -0.3 V to VDD + 0.3 V
Continuous Output Current,
I
OUT
. . . . . . . . . . . . . . . . . . . . . . -40 mA
Package Power Dissipation, P
D
(UCN5815A) . . . . . . . . . . . . . . . 2.5 W*
(UCN5815EP) . . . . . . . . . . . . . 2.27 W*
Operating Temperature Range,
T
A
. . . . . . . . . . . . . . . . . -20°C to +85°C
Storage Temperature Range,
TS. . . . . . . . . . . . . . . . -55°C to +150°C
* Derate linearly to 0 W at +150°C.
Caution: CMOS devices have input static
protection but are susceptible to damage
when exposed to extremely high static
electrical charges.
Data Sheet
26183.10A*
5815
221
22
LOGIC
SUPPLY
ENABLE
1 BLANKING
STROBE
V
DD
3
4
5
6
7
16
17
18
19
20
OUT
1
OUT
2
OUT
3
OUT
4
IN
1
IN
2
IN
3
IN
4
7
8
9
10
11
12
13
14
15
GROUND
OUT
5
OUT
6
OUT
7
Dwg. PP-015-3
OUT
8
LOAD
SUPPLY
IN
5
IN
6
IN
7
IN
8
LATCHES
V
BB
5815
BiMOS II
8-BIT LATCHED
SOURCE DRIVERS
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
ELECTRICAL CHARACTERISTICS at TA = +25°C, VBB = 60 V, VDD = 5 V and 12 V
(unless otherwise noted).
Limits
Characteristic Symbol Test Conditions Min. Max. Units
Output Off Voltage V
OUT
— 1.0 V
Output On Voltage V
OUT
I
OUT
= -25 mA, VBB = 60 V 57.5 — V
Output Pull-Down Current I
OUT
V
OUT
= V
BB
400 850 µA
Output Leakage Current I
OUT
TA = 70°C — -15 µA
Input Voltage V
IN(1)
VDD = 5.0 V 3.5 5.3 V
V
DD
= 12 V 10.5 12.3 V
V
IN(0)
-0.3 +0.8 V
Input Current I
IN(1)
VDD = VIN = 5.0 V — 100 µA
V
DD
= VIN = 12 V — 240 µA
Input lmpedance Z
IN
VDD = 5.0 V 50 — kΩ
Supply Current l
BB
All outputs on, All outputs open — 10.5 mA
All outputs off, All outputs open — 100 µA
l
DD
VDD = 5.0 V, All outputs off, All inputs = 0 V — 100 µA
V
DD
= 12 V, All outputs off, All inputs = 0 V — 200 µA
V
DD
= 5.0 V, One output on, All inputs = 0 V — 1.0 mA
VDD = 12 V, One output on, All inputs = 0 V — 3.0 mA
NOTE: Positive (negative) current is defined as going into (coming out of) the specified device pin.
TYPICAL INPUT
CIRCUIT
TYPICAL OUTPUT
DRIVER
IN
V
DD
Dwg. No. EP-010-4A Dwg. No. EP-021-3
OUT
100 K
V
BB
Copyright © 1984, 2000 Allegro MicroSystems, Inc.
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