UCQ5812AF Datasheet, PDF (1/8 Pages) Allegro MicroSystems – BiMOS II 20-BIT SERIAL-INPUT, LATCHED SOURCE DRIVERS FOR -40 Degrees Celcious TO +85 Degrees Celcious OPERATION

5812-F
BiMOS II 20-BIT SERIAL-INPUT, LATCHED
SOURCE DRIVERS FOR -40°C TO +85°C OPERATION
UCQ5812EPF
The UCQ5812AF/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, high-
OUT₁₈ 5
T ₆
C ₇
8
DU _Y ^{2 9}
O ^{L 1 10}
8 _{OUT12 11}
25 OUT ₂
24
23
22
21
20
19 OUT₈
PR _E ^ON_— ^A6 _Dwg.PP-059-1
ED _NC ^{nt ABSOLUTE MAXIMUM RATINGS}
e ^{at T}_A ^{= 25°C}
U ^E _{m Logic Supply Voltage, VDD ..................... 15 V}
IN ^{R e Driver Supply Voltage, VBB .................... 60 V}
E ^{c Continuous Output Current Range,}
T _{F la} ^{IOUT ................................. -40 to +15 mA}
Input Voltage Range,
N ^{E p} V_IN ........................ -0.3 V to V_DD + 0.3 V
O ^{R re Package Power Dissipation, PD}
(UCQ5812AF) ........................... 3.12 W*
C ^{R d (UCQ5812EPF) ........................1.84 Wâ€} 
e _{Operating Temperature Range,}
IS ^{O d TA .................................. -40°C to +85°C}
Storage Temperature Range,
F n _{TS ................................ -55°C to +150°C}
D ^e _{* Derate at rate of 22 mW/°C above TA = +25°C}
— m _{† Derate at rate of 15 mW/°C above TA = +25°C}
m _{Caution: Allegro CMOS devices have input static}
o _{protection but are susceptible to damage when}
c _{exposed to extremely high static electrical}
charges.
Re ^{Note that the UCQ5812AF (dual in-line package)}
current outputs also allow them to be used in other peripheral power driver
applications.
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
UCQ5810AF/LWF (10 bits), UCQ5811A (12 bits), and UCQ5818AF/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.
The UCQ5812AF is supplied in a 28-pin dual in-line plastic package with
0.600" (15.24 mm) row spacing. For surface mounting, the UCQ5812EPF is
furnished in 28-lead plastic chip carrier (quad pack) with 0.050"(1.22 mm)
centers. Copper lead-frames, reduced supply current requirements and lower
output saturation voltages, allow continuous operation, with all outputs
sourcing 25 mA, of the UCQ5812AF over the operating temperature range,
and the UCQ5812EPF up to +75°C.
FEATURES
s High-Speed Source Drivers
s 60 V Source Outputs
s To 3.3 MHz Data Input Rate
s Low-Output Saturation Voltages
s Low-Power CMOS Logic and Latches
s Active DMOS Pull-Downs
s Reduced Supply Current
Requirements
s Improved Replacement
for TL5812
and UCQ5812EPF (PLCC package) are
electrically identical and share a common pin
number assignment.
Always order by complete part number, e.g., UCQ5812AF .