Datasheet

DS3680
QUAD TELEPHONE RELAY DRIVER
SLRS014C – MARCH 1986 – REVISED SEPTEMBER 1995
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
3 IN –
3 IN +
4 IN –
4 IN +
2 IN –
2 IN +
1
1 IN+
1 IN –
Control-
Signal
Source
SN74XX
52-V Battery
9 DS3680
1 OUT
2 OUT
3 OUT
4 OUT
12
13
11
10
K1
K1 – K4
50-V Relay Coils – 50 mA MAX
14
BAT GND
BAT NEG
–+
2
3
4
5
6
8
7
K2
K3
K4
Figure 3. Relay Driver