UA9637ACP - Dual Differential Line Receiver

Overview

The UA9637ACP is a high-performance dual differential line receiver designed to comply with industry standards ANSI EIA/TIA-422-B, EIA/TIA-423-B, and ITU Recommendations V.10 and V.11. This component is engineered for robust data communication applications, featuring Schottky circuitry for enhanced speed and TTL-compatible outputs for seamless integration with digital systems. The device operates from a single 5V power supply, making it suitable for a wide range of applications in industrial, telecommunications, and computing environments.

The UA9637ACP is particularly well-suited for balanced and unbalanced data transmission systems, offering compatibility with both single-ended and differential-line configurations. Its design ensures reliable performance in noisy environments, making it ideal for long-distance data communication.

Features

• Dual Differential Line Receiver: Two independent receivers in a single package.
• Compliance with Industry Standards: Meets ANSI EIA/TIA-422-B, EIA/TIA-423-B, and ITU V.10/V.11 specifications.
• Schottky Circuitry: Provides high-speed operation and improved noise immunity.
• TTL-Compatible Outputs: Ensures easy interfacing with standard TTL logic families.
• Single 5V Power Supply: Simplifies power management in system designs.
• Wide Input Voltage Range: Supports both differential and single-ended input configurations.
• High Common-Mode Rejection: Minimizes noise interference in balanced transmission lines.
• Available in Multiple Packages: Offered in 8-pin DIP and SOIC packages for flexibility in PCB layout.

Applications

The UA9637ACP is designed for a broad range of applications in data communication and signal processing. Key application areas include:

• RS-422 and RS-423 Interfaces: Used in industrial and telecom systems for reliable data transmission.
• Network Equipment: Suitable for routers, switches, and other networking hardware requiring differential signaling.
• Computer Peripherals: Ideal for printers, scanners, and other devices with high-speed data interfaces.
• Telecommunications: Supports balanced line communication in modems and multiplexers.
• Industrial Control Systems: Provides noise immunity in factory automation and process control environments.
• Test and Measurement Equipment: Ensures accurate signal reception in oscilloscopes and data loggers.

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (VCC): 7V
• Input Voltage (VIN): ±25V
• Output Voltage (VOUT): 5.5V
• Operating Temperature Range: -40°C to +85°C
• Storage Temperature Range: -65°C to +150°C

Recommended Operating Conditions

• Supply Voltage (VCC): 4.75V to 5.25V
• Input Voltage Range (Differential): ±12V
• Input Voltage Range (Single-Ended): 0V to VCC
• Operating Temperature: 0°C to +70°C (Commercial), -40°C to +85°C (Industrial)

Electrical Performance

• Input Threshold Voltage (High): +0.2V min
• Input Threshold Voltage (Low): -0.2V max
• Output Voltage (High): 2.4V min (at IOH = -400µA)
• Output Voltage (Low): 0.4V max (at IOL = 8mA)
• Propagation Delay: 20ns max (for 3V input swing)
• Common-Mode Rejection Ratio (CMRR): 30dB min
• Supply Current (per Receiver): 15mA max

Package Information

8-Pin Dual-In-Line Package (DIP)

• Package Type: PDIP-8
• Dimensions: 9.81mm x 6.35mm (body)
• Pin Pitch: 2.54mm
• Lead Material: Copper Alloy
• Plating: Tin-Lead or RoHS-compliant alternative

8-Pin Small Outline Package (SOIC)

• Package Type: SOIC-8
• Dimensions: 4.90mm x 3.91mm (body)
• Pin Pitch: 1.27mm
• Lead Material: Copper Alloy
• Plating: Tin-Lead or RoHS-compliant alternative

Pin Configuration

• Pin 1: Receiver A Output (ROA)
• Pin 2: Receiver A Inverting Input (A-)
• Pin 3: Receiver A Non-Inverting Input (A+)
• Pin 4: Ground (GND)
• Pin 5: Receiver B Non-Inverting Input (B+)
• Pin 6: Receiver B Inverting Input (B-)
• Pin 7: Receiver B Output (ROB)
• Pin 8: Supply Voltage (VCC)

Conclusion

The UA9637ACP is a versatile and reliable dual differential line receiver that meets stringent industry standards for data communication. With its high-speed Schottky circuitry, TTL-compatible outputs, and robust noise immunity, this component is well-suited for a variety of applications in telecommunications, industrial control, and computing. Available in both DIP and SOIC packages, the UA9637ACP offers design flexibility while ensuring consistent performance in demanding environments.