Overview
The SN65ALS180DR, produced by Texas Instruments, is a differential driver and receiver pair designed for bidirectional data communication on multipoint bus-transmission lines. This integrated circuit meets or exceeds the requirements of TIA/EIA-422-B, TIA/EIA-485-A, and ITU Recommendation V.11. It operates from a single 5-V power supply and is suitable for balanced transmission lines, making it an excellent choice for party-line applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 4.75 to 5.25 | V |
| Operating Temperature Range | -40 to 85 | °C |
| Package Type | 14-SOIC (D) | - |
| Number of Drivers/Receivers | 1/1 | - |
| Protocol | RS422, RS485 | - |
| Receiver Hysteresis | 60 mV | - |
| Driver Output Capacity | ±60 mA | - |
| Receiver Input Impedance | 12 kΩ min | - |
| Receiver Input Sensitivity | ±200 mV max | - |
| Differential Output Voltage | 1.5 to 6 V | - |
| Thermal Shutdown Protection | Yes | - |
Key Features
- High-speed advanced low-power Schottky circuitry
- Designed for 25-Mbaud operation in both serial and parallel applications
- Low skew between devices: 6 ns max
- Low supply-current requirements: 30 mA max
- Individual driver and receiver I/O pins with dual VCC and dual GND
- Wide positive and negative input/output bus voltage ranges
- Driver positive- and negative-current limiting
- Glitch-free power-up and power-down protection
- Active-high and active-low enables for direction control
Applications
The SN65ALS180DR is suitable for various applications requiring reliable and high-speed data communication over multipoint bus-transmission lines. These include:
- Industrial control systems
- Telecommunications equipment
- Network interfaces
- Point-of-sale terminals
- Automotive systems
Q & A
- What is the operating voltage range of the SN65ALS180DR?
The operating voltage range is 4.75 V to 5.25 V.
- What protocols does the SN65ALS180DR support?
The device supports RS422 and RS485 protocols.
- What is the maximum operating temperature of the SN65ALS180DR?
The maximum operating temperature is 85°C.
- Does the SN65ALS180DR have thermal shutdown protection?
Yes, it has thermal shutdown protection.
- What is the driver output capacity of the SN65ALS180DR?
The driver output capacity is ±60 mA.
- What is the receiver input impedance of the SN65ALS180DR?
The receiver input impedance is 12 kΩ min.
- Is the SN65ALS180DR RoHS compliant?
Yes, it is RoHS compliant.
- What package types are available for the SN65ALS180DR?
The device is available in a 14-SOIC (D) package.
- What is the typical receiver hysteresis of the SN65ALS180DR?
The typical receiver hysteresis is 60 mV.
- Does the SN65ALS180DR have glitch-free power-up and power-down protection?
Yes, it has glitch-free power-up and power-down protection.
