Overview
The AM26LS31CN-E, produced by Texas Instruments, is a quadruple complementary-output line driver designed to meet the requirements of ANSI TIA/EIA-422-B and ITU (formerly CCITT) Recommendation V.11. This device is optimized for unidirectional data communication on balanced transmission lines such as twisted-pair or parallel-wire lines. It operates from a single 5V power supply and features low-power Schottky circuitry, which reduces power consumption without compromising speed.
Key Specifications
| Parameter | Test Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| Supply Voltage (VCC) | 4.75 | 5 | 5.25 | V | |
| Propagation Delay Time (tPLH) | CL = 30pF, S1 and S2 open | 14 | 20 | ns | |
| Propagation Delay Time (tPHL) | CL = 30pF, S1 and S2 open | 14 | 20 | ns | |
| Output Enable Time to High Level (tPZH) | CL = 30pF, RL = 75Ω | 25 | 40 | ns | |
| Output Disable Time from High Level (tPHZ) | CL = 10pF, S1 and S2 closed | 21 | 30 | ns | |
| Supply Current (ICC) | VCC = MAX, all outputs disabled | 32 | 80 | mA | |
| Operating Temperature Range | 0 | 70 | °C |
Key Features
- Meets or exceeds the requirements of ANSI TIA/EIA-422-B and ITU Recommendation V.11.
- Operates from a single 5V power supply.
- TTL-Compatible inputs.
- Complementary outputs.
- High output impedance in power-off conditions.
- Complementary output-enable inputs (active-high or active-low enable).
- Available MIL-PRF-38535-qualified options.
- Low-power Schottky circuitry for reduced power consumption without sacrificing speed.
- Positive- and negative-current limiting for protection from line fault conditions.
Applications
- Motor encoders.
- Field transmitters: pressure sensors and temperature sensors.
- Military and avionics imaging.
- Temperature sensors or controllers using Modbus.
- Encoder applications in servo drives and motion controllers.
Q & A
- What are the primary standards that the AM26LS31CN-E complies with?
The AM26LS31CN-E meets or exceeds the requirements of ANSI TIA/EIA-422-B and ITU Recommendation V.11.
- What is the operating voltage range of the AM26LS31CN-E?
The device operates from a single 5V power supply, with a range of 4.75V to 5.25V.
- What type of inputs does the AM26LS31CN-E have?
The device has TTL-Compatible inputs.
- How are the outputs of the AM26LS31CN-E configured?
The device has complementary outputs and high output impedance in power-off conditions.
- What is the purpose of the complementary output-enable inputs?
The complementary output-enable inputs allow for precise control of the transmitter outputs using active-high or active-low enable inputs.
- What kind of current protection does the AM26LS31CN-E offer?
The device features positive- and negative-current limiting for protection from line fault conditions.
- What are some common applications of the AM26LS31CN-E?
Common applications include motor encoders, field transmitters, military and avionics imaging, and temperature sensors or controllers using Modbus.
- What is the typical propagation delay time of the AM26LS31CN-E?
The typical propagation delay time (tPLH and tPHL) is 20 ns.
- What is the operating temperature range of the AM26LS31CN-E?
The operating temperature range is from 0°C to 70°C.
- Are there any MIL-PRF-38535-qualified options available for the AM26LS31CN-E?
