Overview
The SN75ALS176DR is a differential bus transceiver produced by Texas Instruments, designed for bidirectional data communication on multipoint bus transmission lines. This device is part of the SN75ALS176 series and is characterized for operation from 0°C to 70°C. It combines a 3-state, differential line driver and a differential input line receiver, both operating from a single 5-V power supply. The transceiver meets or exceeds the requirements of TIA/EIA-422-B, TIA/EIA-485-A, and ITU recommendations V.11 and X.27, making it suitable for a wide range of industrial and commercial applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 4.75 | 5 | 5.25 | V |
| Voltage Range at Any Bus Terminal | -7 | 12 | V | |
| Enable Input Voltage | 5.5 | V | ||
| Operating Temperature Range | 0 | 70 | °C | |
| Differential Output Delay Time (td(OD)) | 3 | 8 | 13 | ns |
| Pulse Skew (tsk(p)) | 0 | 2 | ns | |
| Pulse Skew Limit (tsk(lim)) | 10 | ns | ||
| Differential Output Transition Time (tt(OD)) | 8 | ns | ||
| Output Enable Time to High Level (tPZH) | 23 | 50 | ns | |
| Output Enable Time to Low Level (tPZL) | 14 | 20 | ns |
Key Features
- Meets or exceeds the requirements of TIA/EIA-422-B, TIA/EIA-485-A, and ITU recommendations V.11 and X.27.
- Operates at data rates up to 35 Mbaud.
- Pulse skew limit of 10 ns for the SN75ALS176 model.
- Designed for multipoint transmission on long bus lines in noisy environments.
- Low supply-current requirements: 30 mA max.
- Wide positive and negative input/output bus-voltage ranges.
- Thermal shutdown protection.
- Driver positive and negative current limiting.
- Receiver input hysteresis.
- Glitch-free power-up and power-down protection.
- Receiver open-circuit fail-safe design.
Applications
- Multipoint bus transmission lines in industrial and commercial environments.
- Party-line applications due to wide common-mode voltage ranges.
- RS-422 and RS-485 communication systems.
- Industrial control systems.
- Remote sensors and data acquisition systems.
Q & A
- What is the operating temperature range of the SN75ALS176DR?
The operating temperature range is from 0°C to 70°C.
- What are the supported communication standards for the SN75ALS176DR?
The device meets or exceeds the requirements of TIA/EIA-422-B, TIA/EIA-485-A, and ITU recommendations V.11 and X.27.
- What is the maximum data rate supported by the SN75ALS176DR?
The device operates at data rates up to 35 Mbaud.
- What is the pulse skew limit for the SN75ALS176 model?
The pulse skew limit is 10 ns.
- What kind of protection does the SN75ALS176DR offer?
The device features thermal shutdown protection, driver positive and negative current limiting, and receiver input hysteresis.
- Is the SN75ALS176DR suitable for noisy environments?
Yes, it is designed for multipoint transmission on long bus lines in noisy environments.
- What is the supply voltage range for the SN75ALS176DR?
The supply voltage range is from 4.75 V to 5.25 V.
- Does the SN75ALS176DR have glitch-free power-up and power-down protection?
Yes, it features glitch-free power-up and power-down protection.
- What is the package type of the SN75ALS176DR?
The device is packaged in an 8-SOIC (0.154", 3.90mm Width).
- Is the SN75ALS176DR RoHS compliant?
Yes, the device is RoHS compliant.
