U2481B
| Model | U2481B |
| Description | Automotive Lamp Outage Monitor |
| PDF file | Total 11 pages (File size: 153K) |
| Chip Manufacturer | ETC |
TELEFUNKEN Semiconductors
U2481B/ U2482B
Pin
1
2
3
4
5
6
7
8
9
10
11
Symbol
REF
K2
IN
1K2
IN
1K5
REF
K5
IN
2K5
IN
1K3
REF
K3
IN
2K3
IN
3K3
IN
1K7
REF
K7
Function
Reference for threshold voltage
single comparator K2
Input 1; single comparator K2
Input 1; double comparator K5
Reference for threshold voltage;
double comparator K5
Input 2; double comparator K5
Input 1; triple comparator K3
Reference for threshold voltage;
triple comparator K3
Input 2; triple comparator K3
Input 3; triple comparator K3
Input 1; triple comparator K7
(U2481B with latch)
Reference for threshold voltage;
triple comparator K7
(U2481B with latch)
Input 2; triple comparator K7
(U2481B with latch)
Input 3; triple comparator K7
(U2481B with latch)
Output for pilot lamp
R/C combination for oscillator
Fuse monitor input ; double
comparator K5
Fuse monitor input; single
comparator K6
Ground
Supply voltage
Reference voltage of compara-
tors
Input1; single comparator K6
Reference for threshold voltage;
single comparator K6
Input; brake fuse comparator
Reference for threshold voltage;
single comparator K4
Input 1; single comparator K4
Fuse monitor input; triple
comparator K3
Input 1; single comparator K1
Reference for threshold voltage;
single comparator K1
Pin Description
REF
K2
1
28
REF
K1
IN
1K2
2
27
IN
1K1
In
1K5
3
26
IN
FK3
REF
K5
4
25
IN
1K4
IN
2K5
5
24
REF
K4
IN
1K3
6
23
IN
F
12
IN
2K7
IN
3K7
OUT
OSC
IN
FK5
IN
FK6
GND
V
S
V
B
IN
1K6
REF
K6
IN
F
REF
K4
IN
1K4
IN
FK3
IN
1K1
REF
K1
REF
K3
7
22
REF
K6
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
IN
2K3
8
21
IN
1K6
IN
3K3
9
20
V
B
IN
1K7
10
19
V
S
REF
K7
11
18
GND
IN
2K7
12
17
IN
FK6
IN
3K7
13
16
IN
FK5
OUT
14
94 8831
15
OSC
Figure 2. Pin configuration
Rev. A1: 21.08.1995
Preliminary Information
3 (11)
