Overview
The SN65LBC176D, produced by Texas Instruments, is a differential bus transceiver designed for bidirectional data communication on multipoint bus-transmission lines. This integrated circuit meets or exceeds the requirements of ANSI Standard TIA/EIA−485−A and ISO 8482:1987(E), making it suitable for balanced transmission lines. The device combines a 3-state, differential line driver and a differential input line receiver, both operating from a single 5-V power supply. It features active-high and active-low enables for the driver and receiver, respectively, which can be externally connected to function as a direction control.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage, VCC | 4.75 | 5 | 5.25 | V |
| Voltage Range at Any Bus Terminal | -10 | 15 | V | |
| Input Voltage, VI (D, DE, R, or RE) | -0.3 | VCC + 0.5 | V | |
| Operating Temperature Range | -40 | 85 | °C | |
| Short Circuit Output Current, IOS | -250 | 250 | mA | |
| Supply Current, ICC (No Load, Receiver Disabled and Driver Enabled) | 1.5 | 1.75 | mA | |
| Differential Output Delay Time, td(OD) | 8 | 25 | 31 | ns |
| Common-Mode Input Voltage Range | -10 | 15 | V |
Key Features
- Bidirectional transceiver for multipoint bus-transmission lines.
- Meets or exceeds ANSI Standard TIA/EIA−485−A and ISO 8482:1987(E) requirements.
- Combines a 3-state, differential line driver and a differential input line receiver.
- Operates from a single 5-V power supply.
- Active-high and active-low enables for driver and receiver, respectively.
- Wide positive and negative common-mode voltage ranges, suitable for party-line applications.
- Low device supply current achievable by disabling the driver and receiver.
- Available in various packages including SOIC, PDIP, and CDIP.
Applications
- Industrial automation and control systems.
- Point-of-sale terminals and cash counters.
- Smart grid and energy management systems.
- AC and servo motor drives.
- Any application requiring reliable, high-speed data transmission over long distances.
Q & A
- What is the primary function of the SN65LBC176D?
The SN65LBC176D is a differential bus transceiver designed for bidirectional data communication on multipoint bus-transmission lines.
- What standards does the SN65LBC176D comply with?
The device meets or exceeds the requirements of ANSI Standard TIA/EIA−485−A and ISO 8482:1987(E).
- What is the operating voltage range of the SN65LBC176D?
The device operates from a single 5-V power supply, with a voltage range of 4.75 V to 5.25 V.
- What are the temperature ranges for the SN65LBC176D?
The SN65LBC176D is characterized for operation from −40°C to 85°C.
- How does the device manage power consumption?
Low device supply current can be achieved by disabling the driver and the receiver.
- What are the common-mode input voltage ranges for the SN65LBC176D?
The device features a common-mode input voltage range of −10 V to 15 V.
- What types of packages are available for the SN65LBC176D?
The device is available in SOIC, PDIP, and CDIP packages.
- What is the significance of the active-high and active-low enables?
The active-high and active-low enables for the driver and receiver, respectively, can be externally connected to function as a direction control.
- How does the device handle noise immunity?
The device features wide positive and negative common-mode voltage ranges, making it suitable for party-line applications and providing good noise immunity.
- What are some typical applications for the SN65LBC176D?
Typical applications include industrial automation, point-of-sale terminals, smart grid systems, and AC and servo motor drives.
