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UCN5812AF

Allegro
Part Number UCN5812AF
Manufacturer Allegro
Description BiMOS II 20-BIT SERIAL-INPUT / LATCHED SOURCE DRIVERS
Published Aug 4, 2014
Detailed Description 5812-F UCN5812EPF SERIAL DATA OUT LOGIC SUPPLY LOAD SUPPLY OUT20 SERIAL DATA IN OUT19 OUT 1 BiMOS II 20-BIT SERIAL-INPU...
Datasheet PDF File UCN5812AF PDF File

UCN5812AF
UCN5812AF

Overview
5812-F UCN5812EPF SERIAL DATA OUT LOGIC SUPPLY LOAD SUPPLY OUT20 SERIAL DATA IN OUT19 OUT 1 BiMOS II 20-BIT SERIAL-INPUT, LATCHED SOURCE DRIVERS WITH ACTIVE-DMOS PULL-DOWNS The UCN5812AF/EPF combine a 20-bit CMOS shift register, data latches, and control circuitry with high-voltage bipolar source drivers and active DMOS pull-downs for reduced supply current requirements.
Although designed primarily for vacuum-fluorescent displays, the high-voltage, highcurrent outputs also allow them to be used in other peripheral power driver applications.
They are improved versions of the original UCN5812A/EP.
25 24 REGISTER REGISTER LATCHES LATCHES Data Sheet 26182.
26C V DD 28 VBB 27 26 4 3 2 1 OUT18 5 6 7 8 9 10 OUT 2 23 22 21 20 19 OUT 8 The CMOS shift register and latches allow direct interfacing with microprocessor-based systems.
With a 5 V supply, they will operate to at least 3.
3 MHz.
At 12 V, higher speeds are possible.
Especially useful for inter-digit blanking, the BLANKING input disables the output source drives and turns on the DMOS sink drivers.
Use with TTL may require the use of appropriate pull-up resistors to ensure an input logic high.
A CMOS serial data output enables cascade connections in applications requiring additional drive lines.
Similar devices are available as the UCN5810AF/LWF (10 bits), UCN5811A (12 bits), and UCN5818AF/EPF (32 bits).
The output source drivers are high-voltage pnp-npn Darlingtons with a minimum breakdown of 60 V and are capable of sourcing up to 40 mA.
The DMOS active pull-downs are capable of sinking up to 15 mA.
OUT12 11 CLK ST ABSOLUTE MAXIMUM RATINGS at TA = 25°C Logic Supply Voltage, VDD .
15 V Driver Supply Voltage, VBB 60 V Continuous Output Current Range, IOUT .
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-40 to +15 mA Input Voltage Range, VIN .
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.
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-0.
3 V to VDD + 0.
3 V Package Power Dissipation, PD (UCN5812AF) .
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3.
12 W* (UCN5812EPF) ...


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