STLC3080 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'STLC3080' PDF : 23 Pages View PDF
STLC3080
PIN DESCRIPTION
Pins
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
Name
CSOUT
CSIN
D0
D1
D2
R0
R1
RES
VDD
VCC
CRT
REL1
REL0
RELR
RGND
VBAT
TX
ZB
RS
ZAC
ZAC1
RX
TTXIN
CAC
RDC
ILTF
RT2
RT1
AGND
RTH
RLIM
IREF
CREV
CSVR
BASE
VREG
BGND
RING
TIP
PCD
MODE
CKRING
DET
GDK/ AL
Description
Chip-Select for output control bits DET and GDK . Active Low. (*)
Chip-Select for input control bits latches D0 D1 D2 R0 R1 . Active Low. (*)
Control Interface input bit 0. (*)
Control Interface input bit 1. (*)
Control Interface input bit 2. (*)
Relay driver 0 command. Active High. (*)
Relay driver 1 command. Active High. (*)
Reset Input; active low.
Control interface Power Supply. VDD = 3.3V or VDD = VCC.
Positive Power Supply (+5V).
Ring-Trip time constant capacitor.
Relay 1 driver output.
Relay 0 driver output.
Ringer Relay driver output.
Relay drivers ground.
Negative Battery Supply.
4 wires output stage (Transmitting Port).
Cancelling input of Balance Network for 2 to 4 wires conversion.
Protection resistors image. The image resistor is connected between this node and ZAC.
AC impedance synthesis.
RX buffer output/ AC impedance is connected between this node and ZAC.
4 wires input stage (Receiving Port). A 100K external resistor must be connected to AGND to
bias the input stage.
Metering Signal Input (AC) and Line Voltage Drop Programming (DC). If not used must be connectd
to AGND.
AC feedback input/ AC-DC split capacitor is connected between this node and ILTF.
DC current feedback input. The RDC resistor is connected between this node and ILTF.
Transversal Line Current Image.
Input pin to sense ringing current , for Ring-Trip detection.
Input pin to sense ringing current , for Ring-Trip detection.
Analog ground.
Off-Hook threshold programming pin.
Limiting current programming pin.
Voltage reference output to generate internal reference current.
Reverse polarity transition time programming.
Battery supply filter capacitor.
Driver of the external transistor. Connected to the base.
Regulated voltage. Provides the negative supply to the power line drivers. It is connected to the
emitter of the external transistor.
Battery ground.
B wire termination output. IB is the current sunk into this pin.
A wire termination output. IA is the current sourced from this pin.
Power Cross Detection Input
Interface Control Mode selection.
Clock at ringing frequency for relay synch and time reference for Automatic activation
Off-hook and Ring-Trip detection bit. Tri-State Output/Active Low.
Ground-Key/Alarm detection bit. Tri-State Output. Active Low.
* Input pins provided with 15µA sink to AGND pull-down.
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