U2101B
| Model | U2101B |
| Description | Relay Timer |
| PDF file | Total 9 pages (File size: 133K) |
| Chip Manufacturer | TEMIC |
U2101B
Pin Description
Divider
OP2+
1
2
16 OP2OUT
15 OP1+
14 OP1–
13 OP1OUT
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Function
Voltage divider
Non-inverting input OP2
Inverting input OP2
Reference voltage –5V
Ground
Supply voltage
Output
RC oscillator 2
(noise suppression)
EN
Enable input
TRIG
Trigger input
WINA
Trigger window adjustment
Osc1
RC oscillator 1 (tracking time)
OP1OUT Output OP1
OP1–
Inverting input OP1
OP1+
Non-inverting input OP1
OP2OUT Output OP2
Symbol
Divider
OP2+
OP2–
V
Ref
GND
–V
S
OUT
Osc2
OP2– 3
V
Ref
GND
–V
S
OUT
Osc2
4
U2101B
5
6
7
8
95 9741
12 Osc1
11 WINA
10 TRIG
9
EN
Supply, Pin 6
The voltage limitation in U2101B allows a simple capacitive supply which is derived from the mains voltage via a
bridge rectifier (see figure 3).
95 9740
L
R
1
U2101B
V
Ref
4
GND
5
D
1
–V
S
6
OUT
7
C
1
Load
V
mains
BZX85
/C20
Relay
24 V
C
3
C
2
N
Figure 3. Supply
TELEFUNKEN Semiconductors
Rev. A1, 30-May-96
3 (9)
