U4076B TEMIC Semiconductors, U4076B Datasheet - Page 3

• Manufacturer Part Number: U4076B
• Description: Three-Tone Ringer for Telephone Sets
• Manufacturer: TEMIC Semiconductors

TELEFUNKEN Semiconductors
Rev. A1, 15-May-96
Pin 13 (15): Output signal shape
Output signal has different duty cycles according to the
position of Pin 13 (15). When grounded it has a duty cycle
of 1:1. When using a dynamic loudspeaker (activa-
tion via transformer/capacitor),
is recommended. This can be achieved by connecting a
capacitor greater than 1 nF between Pin 13 (15) and
ground.
Pin 14 (16): Switched on/off
Switched on/off is controlled by Pin 14 (16). The dc
voltage on the charge capacitor between Pin 4 (5) and 6
(7) is loaded a dummy load as long as the tone ringing is
not switched-on. In on-position (amplitude and frequency
recognition), Pin 14 (16) is connected internally with
Absolute Maximum Ratings
Reference point Pin 4 (5) unless otherwise specified
Thermal Resistance
Supply current
Output current
Junction temperature
Ambient temperature range
Storage temperature range
Power dissipation
T
DIP14
SO16-L
Junction ambient
DIP14
SO16-L
amb
= 60 C
2 kV
Parameters
Parameters
10
m
a
F
Pins 11 and 12 (12, 13)
Preliminary Information
reduced
Pins 5 and 7 (6, 8)
Figure 2. Surge voltage test circuit
110
signal
W
15
W
Pin 4 (5) and the dummy load is switched-off. In
off-position, Pin 14 (16) is connected with Pin 6 (7)
internally and the dummy load is switched on.
Overload protection
The integrated circuit can withstand an ac voltage of
110 V / 50 Hz for 15 seconds between terminals a and b.
The circuit will not be damaged by a surge voltage test
with the following conditions:
Charging voltage of surge capacitance: V
Pulse shape: 10/700 s
Pulse sequence: 30 s
No of surges: 10
Polarity change after five surges
0.22
Symbol
Symbol
R
R
"
T
T
P
P
I
T
amb
thJA
thJA
m
stg
tot
tot
25
S
j
I
F
0
W
Tone ringing
Figure 1
b
a
– 40 to + 125
– 25 to + 60
Value
Value
125
860
720
50
50
75
90
U4076B
93 7575 e
cs
= 2 kV
K/W
K/W
Unit
Unit
mW
mW
mA
mA
C
C
C
3 (6)