2024年3月28日发(作者：)
元器件交易网
5821
AND
5822
BiMOS II 8-BIT SERIAL-INPUT,
LATCHED DRIVERS
16
15
OUT
1
OUT
2
OUT
3
OUT
4
OUT
5
OUT
6
OUT
7
OUT
8
CLOCK
SERIAL
DATA IN
LOGIC
GROUND
LOGIC
SUPPLY
SERIAL
DATA OUT
STROBE
OUTPUT
ENABLE
POWER
GROUND
1
2
CLK
S
H
I
F
T
R
E
G
I
S
T
E
R
3
4
5
6
7
8
ST
OE
V
DD
14
L
A
T
C
H
E
S
13
12
11
10
9
A merged combination of bipolar and MOS technology gives
these devices an interface flexibility beyond the reach of standard
logic buffers and power driver arrays. The UCN5821A,
UCN5821LW, UCN5822A, and UCN5822LW each have an
eight-bit CMOS shift register and CMOS control circuitry, eight
CMOS data latches, and eight bipolar current-sinking Darlington
output drivers. The UCN5821A/LW and UCN5822A/LW are
identical except for rated output voltage.
BiMOS II devices have much higher data-input rates than the
original BiMOS circuits. With a 5 V logic supply, they will
typically operate at better than 5 MHz. With a 12 V supply,
significantly higher speeds are obtained. The CMOS inputs are
compatible with standard CMOS and NMOS logic levels. TTL
circuits may require the use of appropriate pull-up resistors. By
using the serial data output, the drivers can be cascaded for
interface applications requiring additional drive lines.
The UCN5821/22A are furnished in a standard 16-pin plastic
DIP; the UCN5821/22LW are in a 16-lead wide-body SOIC for
surface-mount applications. The UCN5821A is also available for
operation from -40°C to +85°C. To order, change the prefix from
‘UCN’ to ‘UCQ’.
Data Sheet
26185.12E
SUB
Dwg. PP-026A
Note the DIP package and the SOIC package are
electrically identical and share common terminal
number assignments.
ABSOLUTE MAXIMUM RATINGS
at 25
°
C Free-Air Temperature
Output Voltage, V
OUT
UCN5821A & 50 V
UCN5822A & 80 V
Logic Supply Voltage, V
DD
............. 15 V
Input Voltage Range,
V
IN
.................. -0.3 V to V
DD
+ 0.3 V
Continuous Output Current,
I
OUT
..................................... 500 mA
Package Power Dissipation, P
D
Package Code ‘A’.................. 2.1 W
Package Code ‘LW’............... 1.5 W
Operating Temperature Range,
T
A
............................ -20
°
C to +85
°
C
Storage Temperature Range,
T
S
.......................... -55
°
C to +150
°
C
Caution: CMOS devices have input static protection
but are susceptible to damage when exposed to
extremely high static electrical charges.
FEATURES
ITo 3.3 MHz Data Input Rate
ICMOS, NMOS, TTL Compatible
IInternal Pull-Down Resistors
ILow-Power CMOS Logic & Latches
IHigh-Voltage Current-Sink Outputs
IAutomotive Capable
Always order by complete part number, e.g., UCN5821A .
元器件交易网
5821
AND
5822
8-BIT SERIAL-INPUT,
LATCHED DRIVERS
TYPICAL INPUT CIRCUITS
V
DD
CLOCK
SERIAL
DATA IN
LOGIC
GROUND
1
FUNCTIONAL BLOCK DIAGRAM
V
DD
4
LOGIC
SUPPLY
SERIAL
DATA OUT
STROBE
OUTPUT ENABLE
(ACTIVE LOW)
2
SERIAL-PARALLEL SHIFT REGISTER
5
3
LATCHES
6
IN
7
STROBE &
OUTPUT
ENABLE
16151413
12
11109
MOS
BIPOLAR
8
POWER
GROUND
Dwg. FP-013A
SUB
OUT
1
OUT
2
OUT
3
OUT
4
OUT
5
OUT
6
OUT
7
OUT
8
Dwg. EP-010-3
NOTE — There is an indeterminate resistance between logic ground and power
ground. For proper operation, these terminals must be externally connected
together.
V
DD
CLOCK &
SERIAL
DATA IN
IN
Number of Outputs ON
(I
OUT
= 200 mA
V
DD
= 12 V)
8
7
6
5
4
3
2
1
UCN5821A Max. Allowable Duty Cycle
at Ambient Temperature of
25
°
C40
°
C50
°
C60
°
C70
°
C
90%
100%
100%
100%
100%
100%
100%
100%
79%
90%
100%
100%
100%
100%
100%
100%
72%
82%
96%
100%
100%
100%
100%
100%
65%
74%
86%
100%
100%
100%
100%
100%
57%
65%
76%
91%
100%
100%
100%
100%
Dwg. EP-010-4A
TYPICAL OUTPUT DRIVER
OUT
Number of Outputs ON
(I
OUT
= 200 mA
V
DD
= 12 V)
8
7
6
5
4
3
2
1
UCN5821LW Max. Allowable Duty Cycle
at Ambient Temperature of
25
°
C40
°
C50
°
C60
°
C70
°
C
67%
77%
90%
100%
100%
100%
100%
100%
59%
68%
79%
95%
100%
100%
100%
100%
54%
62%
72%
86%
100%
100%
100%
100%
49%
56%
65%
78%
98%
100%
100%
100%
43%
49%
57%
68%
86%
100%
100%
100%
7.2K
3K
SUB
Dwg. No. A-14,314
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1985, 2000, Allegro MicroSystems, Inc.
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