ucq5821lw Allegro MicroSystems, Inc., ucq5821lw Datasheet - Page 3

• Manufacturer Part Number: ucq5821lw
• Description: Bimos Ii 8-bit Serial Input Latched Driver
• Manufacturer: Allegro MicroSystems, Inc.

STROBE &
5821
8-BIT SERIAL-INPUT,
LATCHED DRIVERS
OUTPUT
ENABLE
CLOCK &
DATA IN
SERIAL
TYPICAL OUTPUT DRIVER
TYPICAL INPUT CIRCUITS
IN
IN
7.2K
3K
SUB
Dwg. No. A-14,314
Dwg. EP-010-3
Dwg. EP-010-4A
OUT
V
V
DD
DD
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
Copyright © 1985, 2004 Allegro MicroSystems, Inc.
GROUND
DATA IN
SERIAL
CLOCK
Number of Outputs ON
Number of Outputs ON
LOGIC
(I
(I
1
2
3
OUT
OUT
V
V
DD
DD
= 200 mA
= 200 mA
= 12 V)
= 12 V)
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
FUNCTIONAL BLOCK DIAGRAM
OUT
16
1
OUT
15
SERIAL-PARALLEL SHIFT REGISTER
2
OUT
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
14
25 C
25 C
90%
UCN5821LW Max. Allowable Duty Cycle
67%
77%
90%
UCN5821A Max. Allowable Duty Cycle
3
OUT
13
LATCHES
4
OUT
12
at Ambient Temperature of
at Ambient Temperature of
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
5
40 C
40 C
79%
90%
59%
68%
79%
95%
OUT
11
6
OUT
10
7
100%
100%
100%
100%
100%
100%
100%
100%
100%
OUT
50 C
50 C
72%
82%
96%
54%
62%
72%
86%
9
8
V
DD
100%
100%
100%
100%
100%
100%
100%
100%
60 C
60 C
BIPOLAR
65%
74%
86%
49%
56%
65%
78%
98%
SUB
MOS
4
5
6
8
7
LOGIC
SUPPLY
SERIAL
DATA OUT
STROBE
OUTPUT ENABLE
(ACTIVE LOW)
POWER
GROUND
100%
100%
100%
100%
100%
100%
100%
70 C
70 C
57%
65%
76%
91%
43%
49%
57%
68%
86%
Dwg. FP-013A