Overview
The STLC3080, produced by STMicroelectronics, is a monolithic Subscriber Line Interface Circuit (SLIC) designed for a wide range of applications including public (CO), transmission (DLC), and private (PABX) systems. This device provides standard battery feeding with full programmability of the DC characteristic, making it versatile for various telecommunications needs. The STLC3080 integrates all key features of the BORSHT function and offers dual control mode configuration, including slave mode and automatic activation mode.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature Range | -40 to +85 | °C |
| Positive Supply Voltage (VCC) | 4.75 to 5.25 | V |
| Control Interface Supply Voltage (VDD) | 3 to 5.25 | V |
| Battery Voltage (VBAT) | -73 to -15 (if VREL > VCC) | V |
| Max. Power Dissipation @ Tamb = 70°C | 1.1 | W |
| Max. Power Dissipation @ Tamb = 85°C | 0.9 | W |
| Thermal Resistance Junction to Ambient | 60 | °C/W |
| VCC Supply Current (H.I. Feeding On-Hook) | 1.0 to 1.5 | mA |
| Standby On-Hook Current | 3.5 to 4 | mA |
| Active On-Hook Current | 5.0 to 5.5 | mA |
Key Features
- Dual control mode configuration: Slave mode or Automatic activation mode
- Soft battery reversal with programmable transition time
- On-hook transmission and loop start/ground start feature with programmable threshold
- Low power dissipation in all operating modes
- Automatic dual battery operation
- Integrated ring trip detection with automatic and synchronized ring disconnection
- Metering pulse injection
- Surface mount package
- Three relay drivers for ring and testing
- Protection circuit against power crosses and line faults
Applications
The STLC3080 is suitable for a wide range of telecommunications applications, including public (CO), transmission (DLC), and private (PABX) systems. It is used in various scenarios such as voice transmission, metering pulse injection, and ring trip detection, making it a versatile component for different telecommunication infrastructure needs.
Q & A
- What is the operating temperature range of the STLC3080?
The operating temperature range is -40 to +85°C. - What are the supply voltage ranges for VCC and VDD?
VCC ranges from 4.75 to 5.25V, and VDD ranges from 3 to 5.25V. - What is the maximum power dissipation at 70°C and 85°C?
The maximum power dissipation is 1.1W at 70°C and 0.9W at 85°C. - Does the STLC3080 support dual battery operation?
Yes, it supports automatic dual battery operation. - What protection features does the STLC3080 have?
The device has protection against power crosses and line faults, including thermal protection and overvoltage detection. - How does the STLC3080 handle ring trip detection?
The STLC3080 has integrated ring trip detection with automatic and synchronized ring disconnection. - Can the STLC3080 be used in surface mount applications?
Yes, it is available in a surface mount package. - What is the purpose of the relay drivers in the STLC3080?
The relay drivers are used for ring and testing operations. - How does the STLC3080 manage on-hook transmission?
The device supports on-hook transmission with a voltage drop of 7.8V in on-hook condition to allow proper transmission. - Is the STLC3080 compatible with different types of relays?
Yes, the relay drivers are compatible with both 5V and 12V relays.
