U3761MB-AFN TEMIC Semiconductors, U3761MB-AFN Datasheet - Page 16

• Manufacturer Part Number: U3761MB-AFN
• Description: Low Voltage Standard Telephone Circuit with 13 Memories
• Manufacturer: TEMIC Semiconductors

Flash (F1 or F2 or F3)
1.
2.
3.
t
t
t
t
t
Absolute Maximum Ratings
U3761MB
KID
KRD
PDP
IDP
TD
Line current
DC line voltage
Junction temperature
Ambient temperature
Storage temperature
Total power dissipation, T
Junction ambient
16 (23)
OFF HOOK
T/P MUTE
The dialer will execute flash break and all the flash pause time before the next digits is dialed out.
The flash key can be stored as a digit in memory, however, only one flash will be releases to users.
The system will return to the initial state after the flash pause time is finished.
= key active in debounce
= key release debounce
= pre-digit pause
= inter-digit pause
= DTMF output duration
KEY IN
MASK
DTMF
HKS
OSC
DP
,
Parameters
amb
F
F
t
KID
n
= 60 C
Preliminary Information
t
SSO44
SDIP40
SSO44
SDIP40
FP
F
Figure 10. Flash operation
Oscillation
Low
t
FB
t
t
t
t
ITP
FB
FP
P
Symbol
R
R
T
T
P
P
V
t
I
T
amb
thJA
thJA
FP
stg
tot
tot
3
= intertone pause
= flash break time
= flash pause time
= pause time
L
L
j
– 55 to + 150
TELEFUNKEN Semiconductors
– 25 to + 75
t
ITP
Value
140
125
0.9
1.3
14
70
50
Rev. A2, 23-Apr-97
13410
K/W
K/W
Unit
mA
W
W
V
C
C
C