Texas Instruments
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SN75C189DR
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SN75C189DR

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Signal Conditioning
  • Characteristics: Low-Power Differential Line Driver and Receiver
  • Package: SOIC (Small Outline Integrated Circuit)
  • Essence: Provides signal conditioning for differential line communication
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage: 4.5V to 5.5V
  • Operating Temperature Range: -40°C to +85°C
  • Data Rate: Up to 10 Mbps
  • Number of Channels: 1
  • Input Type: Differential
  • Output Type: Differential
  • Propagation Delay: 100 ns (typical)

Detailed Pin Configuration

The SN75C189DR has a total of 8 pins:

  1. VCC: Supply voltage input
  2. GND: Ground reference
  3. A: Non-inverting input
  4. B: Inverting input
  5. Y: Non-inverting output
  6. Z: Inverting output
  7. DE: Driver enable input
  8. RE: Receiver enable input

Functional Features

  • Low-power consumption
  • Wide operating temperature range
  • High data rate capability
  • Single-channel design
  • Differential input and output
  • Built-in driver and receiver enable control

Advantages and Disadvantages

Advantages: - Low power consumption makes it suitable for battery-powered applications - Wide operating temperature range allows for use in various environments - High data rate capability enables fast and reliable communication - Single-channel design simplifies circuit integration - Differential input and output provide noise immunity

Disadvantages: - Limited to single-channel applications - Requires external enable control signals for driver and receiver

Working Principles

The SN75C189DR is designed to condition and amplify differential signals for reliable communication. It operates by receiving a differential input signal on pins A and B, which is then amplified and converted into a differential output signal on pins Y and Z. The driver and receiver enable control inputs (DE and RE) allow the user to enable or disable the device as needed.

Detailed Application Field Plans

The SN75C189DR is commonly used in various applications that require signal conditioning and amplification, such as:

  1. Industrial automation systems
  2. Telecommunications equipment
  3. Data communication networks
  4. Automotive electronics
  5. Medical devices

Detailed and Complete Alternative Models

  1. MAX485: Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers
  2. LTC2874: Quad ±60V Fault Protected RS485 Transceiver
  3. SN65HVD1787: 3.3-V CAN Transceiver with Standby Mode

These alternative models offer similar functionality and can be considered as alternatives to the SN75C189DR depending on specific requirements and design constraints.

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10 domande e risposte comuni relative all'applicazione di SN75C189DR nelle soluzioni tecniche

Sure! Here are 10 common questions and answers related to the application of SN75C189DR in technical solutions:

  1. Q: What is SN75C189DR? A: SN75C189DR is a high-speed differential line driver and receiver commonly used in communication systems.

  2. Q: What is the operating voltage range of SN75C189DR? A: The operating voltage range of SN75C189DR is typically between 4.5V and 5.5V.

  3. Q: What is the maximum data rate supported by SN75C189DR? A: SN75C189DR supports a maximum data rate of up to 25 Mbps.

  4. Q: Can SN75C189DR be used for both single-ended and differential signaling? A: No, SN75C189DR is specifically designed for differential signaling applications.

  5. Q: What is the output current capability of SN75C189DR? A: SN75C189DR can drive up to ±60 mA of output current.

  6. Q: Is SN75C189DR compatible with TTL/CMOS logic levels? A: Yes, SN75C189DR is compatible with TTL/CMOS logic levels, making it suitable for interfacing with various digital systems.

  7. Q: Does SN75C189DR require external termination resistors? A: Yes, SN75C189DR requires external termination resistors to match the characteristic impedance of the transmission line.

  8. Q: Can SN75C189DR be used in long-distance communication applications? A: Yes, SN75C189DR can be used in long-distance communication applications due to its differential signaling capability.

  9. Q: What is the temperature range within which SN75C189DR operates? A: SN75C189DR operates within a temperature range of -40°C to +85°C.

  10. Q: Are there any recommended layout guidelines for using SN75C189DR? A: Yes, it is recommended to follow the layout guidelines provided in the SN75C189DR datasheet to ensure optimal performance and minimize noise.

Please note that these answers are general and may vary depending on the specific application and requirements. It is always advisable to refer to the datasheet and consult with the manufacturer for detailed information.