Allegro UCN5811A Datasheet
OUT
OUT
BLANKING
SERIAL
DATA OUT
SERIAL
DATA IN
LOGIC
SUPPLY
CLOCK
STROBE
OUT
OUT
Data Sheet
26182.20B
5811
BiMOS II 12-BIT SERIAL-INPUT,
LATCHED SOURCE DRIVERS
Designed primarily for use with vacuum-fluorescent displays, the
UCN5811A smart power BiMOS II driver features low-output saturation
voltages and high output switching speed. These devices contain CMOS shift
1
11
2
12
BLNK
3
4
5
V
6
DD
7
CLK
8
ST
9
1
10
2
LATCHES
REGISTER
20
OUT
10
19
OUT
9
18
OUT
8
17
OUT
7
LOAD
16
V
BB
SUPPLY
GROUND
15
14
OUT
6
13
OUT
5
OUT
12
11
OUT
4
3
registers, data latches, and control circuitry, and bipolar high-speed sourcing
outputs with DMOS active pull-down circuitry. The high-speed shift register
and data latches allow direct interface with microprocessor-based systems. A
CMOS serial data output enables cascade connections in applications requiring additional drive lines.
The UCN5811A features 60 V and -40 mA output ratings, allowing it to
be used in many other peripheral power driver applications. It can be used as
an improved replacement tor the SN75512B. The Allegro devices do not
require special power-up sequencing.
The UCN5811A has 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 this device with TTL may require
the use of appropriate pull-up resistors to ensure a proper input logic high.
Dwg. PP-029-5
ABSOLUTE MAXIMUM RATINGS
at
TA = 25°C
Logic Supply Voltage,VDD..................... 15 V
Driver Supply Voltage, VBB................... 60 V
Continuous Output Current,
......................... -40 mA to +25 mA
I
OUT
Input Voltage Range,
VIN....................... -0.3 V to VDD + 0.3 V
Package Power Dissipation,
........................................ See Graph
P
D
Operating Temperature Range,
................................. -20°C to +85°C
T
A
Storage Temperature Range,
TS............................... -55°C to +150°C
This device is supplied in a 20-pin plastic dual in-line package. It can be
operated over the ambient temperature range of -20°C to +85°C. Copper lead
frames and low output saturation voltages allow all outputs to be operated at
25 mA continuously at ambient temperatures of up to 76°C.
FEATURES
■ To 3.3 MHz Data Input Rate
■ Low-Power CMOS Logic and Latches
■ High-Speed Source Drivers
■ Active Pull-Downs
■ Low-Output Saturation Voltages
■ Improved Replacement for SN75512B
Always order by complete part number: UCN5811A .
5811
BiMOS II 12-BIT
SERIAL-INPUT,
LATCHED SOURCE DRIVERS
2.5
2.0
1.5
1.0
0.5
0
25
ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS
50 75 100 125 150
AMBIENT TEMPERATURE IN °C
R = 55
θJA
°C/W
Dwg. GS-004-1
TYPICAL INPUT CIRCUIT
V
DD
CLOCK
SERIAL
DATA IN
STROBE
BLANKING
FUNCTIONAL BLOCK DIAGRAM
SERIAL-PARALLEL SHIFT REGISTER
LATCHES
GROUND
OUT1OUT
OUT
2
3
OUT
V
MOS
BIPOLAR
V
N
LOGIC
DD
SUPPLY
SERIAL
DATA OUT
LOAD
BB
SUPPLY
Dwg. FP-013-1
IN
Dwg. EP-010-5
TYPICAL OUTPUT DRIVER
Dwg. W-182
TIMING WAVESHAPES
Dwg. W-184
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1985, 2000 Allegro MicroSystems, Inc.
5811
BiMOS II 12-BIT
SERIAL-INPUT,
LATCHED SOURCE DRIVERS
ELECTRICAL CHARACTERISTICS at TA = +25°C, VBB = 60 V (unless otherwise noted).
Limits @ VDD = 5 V Limits @ VDD = 12 V
Characteristic Symbol Test Conditions Mln. Typ. Max. Min. Typ. Max. Units
V
Output Leakage Current I
Output Voltage V
CEX
OUT(H)
V
OUT(L)
= 0 V, TA = +70°C — -5.0 -15 — -5.0 -15 µA
OUT
I
= -25 mA, VBB = 60 V 58 58.5 — 58 58.5 — V
OUT
I
= 1 mA — 2.0 3.0 — — — V
OUT
= 2 mA — — — — 2.0 3.0 V
I
OUT
Output Pull-Down Current I
Input Voltage V
Input Current I
Serial Data Output Voltage V
Maximum Clock Frequency f
Supply Current I
Blanking to Output Delay t
Output Fall Time t
OUT(L)
IN(1)
V
IN(0)
IN(1)
I
IN(0)
OUT(H)
V
OUT(L)
clk
DD(H)
I
DD(L)
I
BB(H)
I
BB(L)
PHL
t
PLH
f
V
= 10 V to V
OUT
= 40 V to V
V
OUT
BB
BB
2.5 4.0 — — — — mA
— — — 15 18 — mA
3.5 — 5.3 10.5 — 12.3 V
-0.3 — +0.8 -0.3 — +0.8 V
VIN = V
DD
— 0.05 0.5 — 0.1 1.0 µA
VIN = 0.8 V — -0.05 -0.5 — -1.0 -1.0 µA
I
= -200 µA 4.5 4.7 — 11.7 11.8 — V
OUT
I
= 200 µA — 200 250 — 100 200 mV
OUT
3.3* — — — — — MHz
All Outputs High — 3.0 5.0 — 15 20 mA
All Outputs Low — 2.5 4.0 — 7.0 10 mA
Outputs High, No Load — 7.5 12 — 7.5 12 mA
Outputs Low — 10 100 — 10 100 µA
CL = 30 pF — 300 550 — 125 150 ns
CL = 30 pF — 250 450 — 170 200 ns
CL = 30 pF — 1000 1250 — 250 300 ns
Output Rise Time t
r
CL = 30 pF — 150 170 — 150 170 ns
Negative current is defined as coming out of (sourcing) the specified device pin.
* Operation at a clock frequency greater than the specified minimum value is possible but not warranteed.
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