Technical Summary: 75110A Dual Line Driver

Overview

The SN55110A, SN75110A, and SN75112 are high-speed dual line drivers designed for digital data transmission over balanced or unbalanced transmission lines. These devices are part of a family of interface components that provide robust performance in demanding communication environments. The 75110A variant is particularly optimized for industrial and telecommunications applications, offering improved noise immunity and signal integrity.

These line drivers are compatible with various logic families and can operate over a wide range of supply voltages, making them versatile for both legacy and modern systems. The dual-channel configuration allows for bidirectional communication or redundant signal paths, enhancing system reliability.

Features

• Dual-Channel Design: Two independent line drivers in a single package, enabling compact system designs.
• High-Speed Operation: Supports data rates up to 20 Mbps, suitable for fast digital communication.
• Wide Supply Voltage Range: Operates from 4.5V to 5.5V, compatible with standard TTL and CMOS logic levels.
• Low Power Consumption: Typically consumes less than 50mW per channel under normal operating conditions.
• Built-In Protection: Features short-circuit protection and thermal shutdown to prevent damage during fault conditions.
• High Noise Immunity: Designed to reject common-mode noise, ensuring reliable performance in electrically noisy environments.
• Industry-Standard Pinout: Compatible with existing designs and easy to integrate into new systems.

Applications

The 75110A dual line driver is well-suited for a variety of applications, including:

• Telecommunications: Used in modems, routers, and other networking equipment for signal transmission over twisted-pair or coaxial cables.
• Industrial Automation: Facilitates reliable data communication in PLCs (Programmable Logic Controllers) and factory automation systems.
• Test and Measurement Equipment: Provides precise signal driving capabilities for oscilloscopes, logic analyzers, and other instrumentation.
• Computer Peripherals: Enables high-speed data transfer in printers, scanners, and external storage devices.
• Military and Aerospace: Meets stringent reliability requirements for avionics and defense systems.

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (Vcc): 7V
• Input Voltage Range: -0.3V to Vcc + 0.3V
• Output Current (per channel): ±50mA
• Operating Temperature Range: -40°C to +85°C
• Storage Temperature Range: -65°C to +150°C

Recommended Operating Conditions

• Supply Voltage (Vcc): 4.5V to 5.5V
• Input High Voltage (VIH): 2.0V min
• Input Low Voltage (VIL): 0.8V max
• Output High Voltage (VOH): 2.4V min at IOH = -3mA
• Output Low Voltage (VOL): 0.4V max at IOL = 16mA
• Propagation Delay: 10ns max (50pF load)

Dynamic Characteristics

• Rise/Fall Time (10% to 90%): 5ns typical
• Skew Time (Channel-to-Channel): 2ns max
• Output Enable/Disable Time: 15ns max

Package Information

The 75110A is available in multiple package options to accommodate different assembly and thermal requirements:

• 16-Pin DIP (Dual In-Line Package):
  • Dimensions: 19.3mm x 6.35mm x 4.57mm
  • Pin Pitch: 2.54mm
  • Material: Molded Plastic
• 16-Pin SOIC (Small Outline Integrated Circuit):
  • Dimensions: 9.9mm x 3.9mm x 1.75mm
  • Pin Pitch: 1.27mm
  • Material: Plastic, RoHS Compliant

Pin Configuration

The pinout for the 75110A is as follows (top view):

• Pin 1: Output Enable (Channel 1)
• Pin 2: Input A (Channel 1)
• Pin 3: Output Y (Channel 1)
• Pin 4: Ground (GND)
• Pin 5: Output Z (Channel 1)
• Pin 6: Input B (Channel 1)
• Pin 7: Vcc (Supply Voltage)
• Pin 8: Input B (Channel 2)
• Pin 9: Output Z (Channel 2)
• Pin 10: Ground (GND)
• Pin 11: Output Y (Channel 2)
• Pin 12: Input A (Channel 2)
• Pin 13: Output Enable (Channel 2)
• Pins 14-16: No Connection (NC)

Conclusion

The 75110A dual line driver is a versatile and reliable component for high-speed digital communication systems. Its robust electrical characteristics, wide operating range, and flexible packaging options make it suitable for a broad spectrum of applications, from industrial automation to telecommunications. With built-in protection features and high noise immunity, this device ensures consistent performance even in challenging environments.