Overview
The DS26C31TMX from Texas Instruments is a quad differential line driver designed for digital data transmission over balanced lines. This device meets the requirements of the EIA standard RS-422 while retaining the low power characteristics of CMOS technology. It is particularly suited for applications requiring long-distance digital data transmission and conversion from TTL or CMOS input levels to differential signal levels.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC-16 | |
| Pins | 16 | |
| Operating Temperature Range | -40 to 85 | °C |
| Supply Voltage (VCC) | 4.50 to 5.50 | V |
| Data Transfer Rate | 30 Mbps | |
| Typical Propagation Delays | 6 ns | |
| Typical Output Skew | 0.5 ns | |
| High Level Output Voltage (VOH) | 2.5 to 3.4 | V |
| Low Level Output Voltage (VOL) | 0.3 to 0.5 | V |
| Quiescent Supply Current (ICC) | 200 to 500 | μA |
| Number of Transmitters | 4 | |
| Number of Receivers | 0 |
Key Features
- TTL Input Compatible: Accepts TTL or CMOS input levels and translates them to RS-422 output levels.
- Typical Propagation Delays: 6 ns, and Typical Output Skew: 0.5 ns.
- Outputs Will Not Load Line When VCC = 0 V: Special output circuitry prevents loading down the bus when powered down.
- Meets EIA Standard RS-422: Compliant with RS-422 requirements while maintaining low power characteristics of CMOS.
- Operation From Single 5-V Supply: Operates from a single 5-volt supply.
- Tri-State Outputs: Allows connection to system buses.
- Low Quiescent Current: Minimal power consumption.
- Available in Surface Mount: Suitable for surface mount applications.
- Mil-Std-883C Compliant: Meets military standards for reliability.
- Pin Compatible: Compatible with AM26LS31 and DS26LS31.
- Electrostatic Discharge Protection: Inputs are protected against electrostatic discharge.
Applications
The DS26C31TMX is designed for applications that require long-distance digital data transmission over balanced cables. It is particularly useful in:
- Serial and terminal interfaces.
- Differential line driver applications for RS-422.
- Environments requiring good immunity to noise and shifts in ground reference potential.
- Systems needing conversion from TTL or CMOS input levels to differential signal levels.
Q & A
- What is the primary function of the DS26C31TMX?
The DS26C31TMX is a quad differential line driver designed for digital data transmission over balanced lines. - What standard does the DS26C31TMX comply with?
The DS26C31TMX meets the requirements of the EIA standard RS-422. - What is the operating temperature range of the DS26C31TMX?
The operating temperature range is -40°C to 85°C. - What is the typical propagation delay of the DS26C31TMX?
The typical propagation delay is 6 ns. - Does the DS26C31TMX support surface mount packaging?
Yes, it is available in surface mount packaging. - How many transmitters does the DS26C31TMX have?
The DS26C31TMX has 4 transmitters. - What is the quiescent supply current of the DS26C31TMX?
The quiescent supply current is 200 to 500 μA. - Is the DS26C31TMX protected against electrostatic discharge?
Yes, the inputs are protected against electrostatic discharge. - What is the data transfer rate of the DS26C31TMX?
The data transfer rate is up to 30 Mbps. - Is the DS26C31TMX pin compatible with other devices?
Yes, it is pin compatible with AM26LS31 and DS26LS31.
