Output Voltage, V
Logic Supply Voltage, V
Input Voltage Range,
. . . . . . . . . -0.3 V to V
V
IN
Continuous Output Current,
(each output) . . . . . . . . . . 125 mA
l
OUT
Package Power Dissipation, P
(UCN5833A) . . . . . . . . . . . . . . . 3.5 W*
(UCN5833EP) . . . . . . . . . . . . . . 2.5 W*
Operating Temperature Range,
. . . . . . . . . . . . . . - 20°C to +85°C
T
A
Storage Temperature Range,
. . . . . . . . . . . . . -55°C to +150°C
T
S
* 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.
. . . . . . . . . . . 30 V
OUT
DD
5833
BiMOS II 32-BIT SERIAL-INPUT,
LATCHED DRIVER
Designed to reduce logic supply current, chip size, and system
cost, the UCN5833A/EP integrated circuits offer high-speed operation
for thermal printers. These devices can also be used to drive multiplexed LED displays or incandescent lamps within their 125 mA peak
output current rating. The combination of bipolar and MOS technologies gives BiMOS II smart power ICs an interface flexibility beyond the
reach of standard buffers and power driver circuits.
These 32-bit drivers have bipolar open-collector npn Darlington
outputs, a CMOS data latch for each of the drivers, a 32-bit CMOS
shift register, and CMOS control circuitry. The high-speed CMOS shift
registers and latches allow operation with most microprocessor-based
systems at data input rates above 3.3 MHz. Use of these drivers with
TTL may require input pull-up resistors to ensure an input logic high.
The UCN5833A is supplied in a 40-pin dual in-line plastic package
with 0.600" (15.24 mm) row spacing. At an ambient temperature of
+75°C, all outputs of the DlP-packaged device will sustain 50 mA
continuously. For high-density applications, the UCN5833EP is
available. This 44-lead plastic chip carrier (quad pack) is intended
for surface-mounting on solder lands with 0.050" (1.27 mm) centers.
CMOS serial data outputs permit cascading for applications requiring
additional drive lines.
Serial Data present at the input is transferred to the shift register
on the logic “0” to logic “1” transition of the CLOCK input pulse. On
succeeding CLOCK pulses, the registers shift data information towards
the SERIAL DATA OUTPUT. The SERIAL DATA must appear at the
input prior to the rising edge of the CLOCK input waveform.
Information present at any register is transferred to its respective
latch when the STROBE is high (serial-to-parallel conversion). The
latches will continue to accept new data as long as the STROBE is
held high. Applications where the latches are bypassed (STROBE tied
high) will require that the OUTPUT ENABLE input be low during serial
data entry.
When the OUTPUT ENABLE input is low, all of the output buffers
are disabled (OFF) without affecting the information stored in the
latches or shift register. With the OUTPUT ENABLE input high, the
outputs are controlled by the state of the latches.
The products described here are manufactured under one or more
U.S. patents or U.S. patents pending.
Allegro MicroSystems, Inc. reserves the right to make, from time to
time, such departures from the detail specifications as may be required
to permit improvements in the performance, reliability, or
manufacturability of its products. Before placing an order, the user is
cautioned to verify that the information being relied upon is current.
Allegro products are not authorized for use as critical components
in life-support devices or systems without express written approval.
The information included herein is believed to be accurate and
reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its use; nor for any infringement of patents or other rights of
third parties which may result from its use.
Page 8
5833
BiMOS II 32-BIT
SERIAL-INPUT,
LATCHED DRIVER
POWER
INTERFACE DRIVERS
FunctionOutput Ratings*Part Number
SERIAL-INPUT LATCHED DRIVERS
8-Bit (saturated drivers)-120 mA 50 V‡5895
8-Bit350 mA 50 V5821
8-Bit350 mA80 V5822
8-Bit350 mA 50 V‡5841
8-Bit350 mA 80 V‡5842
8-Bit (constant-current LED driver)75 mA17 V6275
8-Bit (DMOS drivers)250 mA 50 V6595
8-Bit (DMOS drivers)350 mA 50 V‡6A595
8-Bit (DMOS drivers)100 mA 50 V6B595
10-Bit (active pull-downs)-25 mA 60 V5810-F and 6809/10
12-Bit (active pull-downs)-25 mA 60 V5811 and 6811
16-Bit (constant-current LED driver)75 mA17 V6276
20-Bit (active pull-downs)-25 mA 60 V5812-F and 6812
32-Bit (active pull-downs)-25 mA 60 V5818-F and 6818
32-Bit100 mA 30 V5833
32-Bit (saturated drivers)100 mA 40 V5832
PARALLEL-INPUT LATCHED DRIVERS
4-Bit350 mA 50 V‡5800
†
8-Bit-25 mA 60 V5815
8-Bit350 mA 50 V‡5801
8-Bit (DMOS drivers)100 mA 50 V6B273
8-Bit (DMOS drivers)250 mA 50 V6273
SPECIAL-PURPOSE DEVICES
Unipolar Stepper Motor Translator/Driver1.25 A 50 V‡5804
Addressable 8-Bit Decoder/DMOS Driver250 mA 50 V6259
Addressable 8-Bit Decoder/DMOS Driver350 mA 50 V‡6A259
Addressable 8-Bit Decoder/DMOS Driver100 mA 50 V6B259
Addressable 28-Line Decoder/Driver450 mA 30 V6817
*Current is maximum specified test condition, voltage is maximum rating. See specification for sustaining voltage limits.
Negative current is defined as coming out of (sourcing) the output.
†Complete part number includes additional characters to indicate operating temperature range and package style.
‡Internal transient-suppression diodes included for inductive-load protection.