|Category||Communication => Telephony => Line Card|
|Description||Subscriber Line Interface Circuit|
|Company||ST Microelectronics, Inc.|
|Datasheet||Download STLC3080 datasheet
|Cross ref.||Similar parts: HC55143IM|
MONOCHIP SLIC SUITABLE FOR PUBLIC APPLICATIONS IMPLEMENTES ALL KEY FEATURES OF THE BORSHT FUNCTION DUAL CONTROL MODE CONFIGURATION: SLAVE MODE OR AUTOMATIC ACTIVATION MODE. SOFT BATTERY REVERSAL WITH PROGRAMMABLE TRANSITION TIME ON HOOK TRANSMISSION LOOP START/GROUND START FEATURE WITH PROGR. THRESHOLD LOW POWER DISSIPATION IN ALL OPERATING MODES AUTOMATIC DUAL BATTERY OPERATION INTEGRATED RING TRIP DETECTION WITH AUTOMATIC AND SYNCRONISED RING DISCONNECTION METERING PULSE INJECTION SURFACE MOUNT PACKAGE THREE RELAY DRIVERS FOR RING AND TESTING BLOCK DIAGRAM
TO +85°C OPERATING RANGE DESCRIPTION The is a SLIC device suitable for a wide range of applications: public (CO), transmission (DLC) and private (PABX). The SLIC provides the standard battery feeding with full programmability of the DC characteristic. In particular two external resistors allow to set the limiting current value (up to 50mA) and the value of the resistive feeding when not in constant current region.MODE R0 R1 DET GDK/AL CSIN CSOUT CKRING RES TTXIN RX AC PROCESSOR LOGIC INTERFACE & DECODER
CREV IREF RLIM RTH AGND RT1 RT2 ILTF RDC CAC TTXIN
Symbol VBAT VCC VDD IREL A/R/BGND Battery voltage Positive supply voltage Control Interface Supply Voltage Current into relay drivers AGND respect BGND respect RGND Parameter Value -80 + VCC -80 + VREL to +2 Unit mA V
Symbol TopT VCC VDD VBAT A/R/BGND (70) PD(85) Positive supply voltage Control Interface Supply Voltage Battery voltage if VREL > VCC AGND respect BGND respect RGND Max. power dissipation @ Tamb = 70°C Max. power dissipation @ Tamb = 85°C Parameter Operating temperature range Value -78 + VREL 1.1 0.9 Unit °CSymbol Rth j-amb 2/23 Parameter Thermal resistance Junction to Ambient Typ. Value 60 Unit °C/W
Pins Name CSOUT CSIN R0 R1 RES VDD VCC CRT REL1 REL0 RELR RGND VBAT 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 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 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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