Overview
The SN65LBC176ADR is a differential bus transceiver produced by Texas Instruments. It is designed for bidirectional data communication on multipoint bus-transmission lines, particularly suited for balanced transmission lines. This device is compatible with ANSI standard TIA/EIA-485-A and ISO 8482:1987(E), making it suitable for a wide range of applications requiring reliable and high-speed data transmission.
The SN65LBC176ADR combines a 3-state, differential line driver and a differential input line receiver, both operating from a single 5-V power supply. The driver and receiver have active-high and active-low enables, respectively, which can be externally connected to function as a direction control. This configuration allows for minimum loading on the bus when the driver is disabled or VCC = 0.
Key Specifications
| Parameter | Test Conditions | Min | Max | |
|---|---|---|---|---|
| Signaling Rate | Up to 30 Mbps | - | - | - |
| Bus-Pin ESD Protection | - | - | - | 12 kV HBM |
| Operating Free-Air Temperature | - | -40°C | - | 85°C |
| Supply Voltage (VCC) | - | - | - | 5 V |
| High-Level Output Current (Driver) | - | -60 mA | - | - |
| Low-Level Output Current (Driver) | - | 60 mA | - | - |
| Propagation Delay Time (Low-to-High Level Output) | RL = 54 Ω, CL = 50 pF | 2 ns | 12 ns | 12 ns |
| Common Mode Voltage Range | - | -7 V | - | 12 V |
| Receiver Input Sensitivity | - | ±200 mV | - | - |
| Receiver Input Hysteresis | - | 50 mV (typical) | - | - |
Key Features
- Designed for signaling rates up to 30 Mbps
- Bus-Pin ESD protection exceeds 12 kV HBM
- Compatible with ANSI standard TIA/EIA-485-A and ISO 8482:1987(E)
- Low skew and designed for multipoint transmission on long bus lines in noisy environments
- Very low disabled supply-current requirements: 700 μA maximum
- Common mode voltage range of –7 V to 12 V
- Thermal-shutdown protection and driver positive and negative current limiting
- Open-circuit failsafe receiver design
- Glitch-free power-up and power-down protection
- Available in Q-temp automotive versions for high reliability automotive applications
Applications
The SN65LBC176ADR is suitable for various applications requiring reliable and high-speed data transmission over multipoint bus lines. These include:
- Industrial control systems
- Automotive systems, particularly those requiring high reliability and compliance with automotive standards
- Telecommunications equipment
- Point-of-sale terminals and other commercial equipment
- Any system needing balanced transmission lines and compliance with RS-485 standards
Q & A
- What is the maximum signaling rate of the SN65LBC176ADR?
The SN65LBC176ADR is designed for signaling rates up to 30 Mbps.
- What are the compatible standards for the SN65LBC176ADR?
The device is compatible with ANSI standard TIA/EIA-485-A and ISO 8482:1987(E).
- What is the ESD protection level of the SN65LBC176ADR?
The bus-pin ESD protection exceeds 12 kV HBM.
- What is the operating free-air temperature range of the SN65LBC176ADR?
The operating free-air temperature range is from –40°C to 85°C.
- How does the device handle power-up and power-down?
The device features glitch-free power-up and power-down protection.
- What is the common mode voltage range of the SN65LBC176ADR?
The common mode voltage range is from –7 V to 12 V.
- Does the SN65LBC176ADR have thermal protection?
Yes, the device includes thermal-shutdown protection.
- What are the typical applications of the SN65LBC176ADR?
Typical applications include industrial control systems, automotive systems, telecommunications equipment, and point-of-sale terminals.
- How can the supply current be minimized in the SN65LBC176ADR?
Very low device supply current can be achieved by disabling the driver and the receiver.
- Is the SN65LBC176ADR available in automotive versions?
Yes, it is available in Q-temp automotive versions for high reliability automotive applications.
- What is the receiver input sensitivity of the SN65LBC176ADR?
The receiver input sensitivity is ±200 mV maximum.
