STLC3065Q STMicroelectronics, STLC3065Q Datasheet - Page 7

• Manufacturer Part Number: STLC3065Q
• Manufacturer: STMicroelectronics

Specifications of STLC3065Q

• Number Of Channels: 1
• On-hook Transmission: Yes
• Polarity Reversal: Yes
• On-chip Ring Relay Driver: Yes
• Operating Temp Range: -40C to 85C
• Package Type: TQFP
• Operating Temperature Classification: Industrial
• Pin Count: 44
• Mounting: Surface Mount
• Operating Supply Voltage (min): 5.5V
• Lead Free Status / RoHS Status: Not Compliant

Where:
Note: see also Appendix C
Table 2 shows all the possible combinations be-
tween switches configurations and operating
modes.
A detailed description of each configuration can
be found in the "OPERATING MODES" descrip-
tion section.
OPERATING MODES
Power Down (PWD)
DC CHARACTERISTIC & SUPERVISION
When this mode is selected both 2W ports
(TIP1/RING1 and TIP2/RING2) are in high imped-
ance; all switches Sw1 to Sw6 are open (see
fig.1)
The SLIC core is switched off and the line detec-
tors are disabled therefore the off-hook condition
cannot be detected.
This mode can be selected in emergency condi-
tion when it is necessary to cut any current deliv-
ered to the line.
This mode is also forced by STLC3065 in case of
thermal overload (Tj > 140°C).
In this case the device goes back to the previous
status as soon as the junction temperature de-
crease under the hysteresis threshold.
AC CHARACTERISTICS
Both the 2W ports (TIP1/RING1 and TIP2/RING2)
are set in high impedance, the TX output buffer is
a low impedance output, no AC transmission is
possible.
D0
"Open":
"To P.S. via Res":
"To Buffer":
"300 A bias":
0
D1
0
D2
X
P1
0
P2
0
the line port termination is in high impedance.
the TIP(n) wire is connected to BGND through a 1500
connected to VBAT by a 1500
to detect the off-hook .
the TIP(n) wire and RING(n) wire are connected to the SLIC core line driver and the off-
hook detection is performed using the SLIC core supervision circuit that drives the DET
output.
the TIP(n) wire is connected to BGND through a 1500
biased by a 300 A current generator to negative battery (Vbat)
disable disable disable
DET
DET1
DET2
resistor. The current flowing in the second resistor is used
High Impedance Feeding (HI-Z)
DC CHARACTERISTIC & SUPERVISION
This operating mode is normally selected when
the telephone is in on-hook in order to monitor the
line status keeping the power consumption at the
minimum.
The SLIC core of STLC3065 is in PWD mode
(see fig.1 or FUNCTIONAL DIAGRAM); the two
line series switches (Sw1; Sw2) are open. De-
pending on P1, P2 the 2W ports (TIP1/RING1
and TIP2/RING2) can be in high impedance or
connected to the built in feeding resistors
(2x1500 ) via SW3T and SW5R or SW4T and
SW6R.
P1
TIP2/RING2 (see Fig.1 and Table 2).
When this mode is selected normally both P1, P2
bits should be set to one.
The output voltage in on-hook condition is equal
to the self generated battery voltage (-50V typ).
When off-hook occurs on 2W port 1 (2) the cur-
rent flowing through the RING1(2) wire activates
the DET1 (2_) detector indicating the line status
change. When DET1 or DET2 are activated also
the DET become active (low logic level).
The off-hook threshold in HI-Z mode is the same
value programmed in ACTIVE mode.
The DC characteristic in HI-Z mode is just equal
to the self generated battery with 2x(1500W+Rp)
D0
0
0
0
controls
D1
0
0
0
D2
X
X
X
TIP1/RING1
P1
1
0
1
resistor , the RING(n) wire is
resistor , the RING(n) wire is
P2
1
1
0
line 1+2
off/hk
off/hk
line 2
off/hk
line 1
DET
and
disable
DET1
off/hk
line 1
off/hk
line 1
P2
STLC3065
controls
disable
DET2
off/hk
line 2
off/hk
line 1
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