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Texas Instruments SN75175DR
- Part No.:
- SN75175DR
- Manufacturer:
- Texas Instruments
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN75175DR.pdf
- Description:
- IC TRANSCEIVER 0/4 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,074
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Product details
Overview
SN75175DR from Texas Instruments is a monolithic quadruple differential line receiver with 3-state outputs, designed for balanced multipoint bus transmission per EIA/TIA-422-B, RS-423-B, and RS-485 standards. It operates from a single 5-V supply, supports ±12 V common-mode input range, features ±200 mV input sensitivity, and delivers up to 10 Mbps data rates in noisy industrial environments such as factory automation networks.
For engineers reviewing the SN75175DR datasheet, SN75175DR pinout, SN75175DR application, or SN75175DR equivalent, key selection criteria include its 16-pin SOIC (D) package, −12 V to +12 V common-mode input tolerance, 50-mV typical input hysteresis for noise immunity, 12-kΩ minimum input impedance, and dual enable control (1,2EN and 3,4EN) for grouped channel management.
Technical Context
The SN75175DR implements four independent differential receivers in a single IC, each comparing A–B differential inputs and producing TTL-compatible single-ended outputs (1Y–4Y). Two active-high enable inputs-1,2EN and 3,4EN-control output states in pairs, allowing selective channel activation without affecting others.
Its internal architecture supports operation across 0°C to 70°C ambient temperature, with propagation delays under 35 ns (tPLH/tPHL), output enable/disable times ≤30 ns, and robust input protection against ±25 V absolute maximum differential and common-mode transients-enabling reliable use on long, unterminated or stubbed bus lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 4.75 V to 5.25 V - ensures compatibility with standard 5-V logic rails and stable operation under rail variation. |
| Common-mode input range | −12 V to +12 V - enables reliable reception on electrically noisy, ground-varying industrial buses. |
| Differential input sensitivity | ±200 mV - guarantees valid logic decision even with low-amplitude signals over long cables. |
| Input hysteresis | 50 mV typical - suppresses false toggling caused by EMI or signal ringing on slow edges. |
| Propagation delay | 22–35 ns - supports data rates up to 10 Mbps with timing margin for system-level synchronization. |
| Operating temperature | 0°C to 70°C - qualified for commercial and industrial control equipment operating outside extended ranges. |
| Output type | 3-state TTL - allows wired-OR bus topologies and seamless integration into microcontroller or FPGA I/O subsystems. |
Pinout & Package
SN75175DR is housed in a 16-pin SOIC (D) package measuring 9.9 mm × 6 mm, with standard 1.27-mm lead pitch and surface-mount compatibility. The device uses a conventional top-view pinout with GND (Pin 8) and VCC (Pin 16) at opposite corners, dual enable inputs centrally located, and differential input/output pairs arranged symmetrically for PCB routing efficiency.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 1B | Channel 1 differential input (non-inverting/inverting) | Accept balanced RS-422/RS-485 signals; polarity determines logic mapping of output 1Y. |
| 1Y | Channel 1 TTL output | Single-ended logic-level output enabled only when 1,2EN = high; high-impedance otherwise. |
| 1,2EN | Active-high enable for channels 1 & 2 | Simultaneously controls output drivers of first two receivers; simplifies bus arbitration logic. |
| 2A, 2B | Channel 2 differential input (non-inverting/inverting) | Independent receiver pair sharing same enable; supports dual-channel point-to-point or multidrop links. |
| 2Y | Channel 2 TTL output | Matches 1Y timing and drive strength; enables synchronous readout of two differential lines. |
| GND (Pin 8) | Power ground reference | Primary return path for all receiver circuits; must be low-impedance to maintain common-mode rejection. |
| 3A, 3B / 4A, 4B | Channels 3 & 4 differential inputs | Second receiver pair with separate enable (3,4EN); permits four independent or grouped bus interfaces. |
| 3Y, 4Y | Channels 3 & 4 TTL outputs | 3-state outputs synchronized to respective enable; supports time-multiplexed or parallel multi-receiver systems. |
| 3,4EN | Active-high enable for channels 3 & 4 | Isolates second receiver pair from bus loading during idle periods; reduces system power consumption. |
| VCC (Pin 16) | Positive supply | Supplies all four receivers and output buffers; bypass capacitor required near pin for noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| RS-422/RS-485 compliance | Fully meets EIA/TIA-422-B, RS-423-B, and RS-485 electrical requirements - eliminates need for external level-shifting or termination logic. |
| High noise immunity | 50-mV input hysteresis and ±12 V common-mode range - sustains reliable operation in motor drive cabinets or PLC backplanes with >1 kV fast transients. |
| Grouped 3-state control | Dual enable inputs (1,2EN and 3,4EN) - enables flexible bus partitioning, e.g., isolating encoder feedback from command channels. |
| Low-power 5-V operation | 70 mA max supply current with all receivers disabled - reduces thermal load in dense I/O modules and extends fanless system uptime. |
| Plug-in MC3486 replacement | PIN-TO-PIN compatible with legacy MC3486 footprint - allows drop-in upgrade of aging industrial controllers without PCB redesign. |
Applications
| Industrial Motor Drives | Factory Automation Networks |
|---|---|
Use Scenario: Receiving position feedback and command signals from encoders, resolvers, and servo drives in variable-frequency drive (VFD) systems. IC Role / Device Role / Timing Role: Differential line receiver converting RS-485-encoded motion commands and quadrature encoder outputs into clean TTL logic for microcontroller or FPGA processing. Use Value: ±200 mV sensitivity and 50-mV hysteresis ensure accurate edge detection despite cable-induced jitter and EMI from IGBT switching. | Use Scenario: Interconnecting programmable logic controllers (PLCs), remote I/O blocks, and HMI terminals over long-distance multidrop bus segments. IC Role / Device Role / Timing Role: Bus interface receiver enabling simultaneous monitoring of up to four differential communication channels in a single node. Use Value: Dual enable control allows dynamic channel grouping-e.g., disabling unused sensor links during maintenance without disrupting active control loops. |
| Building Management Systems | Test & Measurement Equipment |
Use Scenario: Collecting environmental sensor data (temperature, humidity, CO₂) across HVAC ducts and zones using daisy-chained RS-485 nodes. IC Role / Device Role / Timing Role: Signal conditioner translating differential sensor bus voltages into deterministic logic levels for ADC or microcontroller sampling. Use Value: −12 V to +12 V common-mode range accommodates ground potential differences between distributed sensors mounted on metal ductwork. | Use Scenario: Capturing high-speed digital waveforms from instrumentation amplifiers or logic analyzers with differential front-end stages. IC Role / Device Role / Timing Role: High-fidelity receiver preserving signal integrity at up to 10 Mbps for real-time waveform digitization and trigger generation. Use Value: 35 ns max propagation delay and matched tPLH/tPHL ensure sub-100 ns timing accuracy critical for jitter-sensitive test setups. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential line receiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65175DR | Wider temperature range (−40°C to 85°C); identical pinout, electrical specs, and enable logic. | Suitable for automotive engine control units or outdoor telecom equipment requiring extended thermal performance. | Select SN65175DR when operation below 0°C or above 70°C is required; otherwise SN75175DR offers cost-optimized commercial-grade performance. |
| MAX488CPA+ | SOIC-8 package; single-channel; lower common-mode range (−7 V to +12 V); no enable input. | Used where space-constrained designs require discrete channel isolation or simplified point-to-point links. | Choose MAX488CPA+ only for single-receiver applications with minimal board area; not a functional substitute for quad-channel or enable-controlled use cases. |
Compared with SN65175DR and MAX488CPA+, the SN75175DR provides optimal balance of channel density, enable flexibility, and commercial-temperature reliability-making it ideal for cost-sensitive, space-efficient industrial controllers where full −40°C to 85°C operation is unnecessary.
Availability
SN75175DR is available at Aetrix Electronics and suitable for factory automation networks, motor drive feedback systems, and building management sensor buses requiring stable component supply, long-term manufacturability, and consistent parametric performance across production lots.
Supply support for SN75175DR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The SN75175DR belongs to TI's legacy RS-485/RS-422 interface portfolio, engineered specifically for robust, low-cost differential data reception in commercial-grade industrial control and automation systems.
FAQ
What standards does the SN75175DR comply with?
The SN75175DR meets or exceeds ANSI/EIA/TIA-422-B, RS-423-B, and RS-485 standards, as well as ITU recommendations V.10, V.11, X.26, and X.27. These specifications define electrical characteristics for balanced differential data transmission, ensuring interoperability with industry-standard transceivers and cabling infrastructure used in the SN75175DR's target applications.
Does the SN75175DR support true RS-485 half-duplex operation?
The SN75175DR is a receiver-only device and does not integrate driver functionality, so it cannot perform RS-485 half-duplex communication alone. However, it is explicitly designed to pair with TI's SN75172 or SN75174 quadruple differential line drivers. When combined, this receiver-driver set enables full RS-485 half-duplex multidrop bus implementation using the SN75175DR's 3-state outputs and enable controls.
What is the function of the 1,2EN and 3,4EN pins on the SN75175DR?
The 1,2EN and 3,4EN pins are active-high enable inputs that control the output state of two receiver pairs: 1,2EN enables channels 1 and 2 (1Y and 2Y), while 3,4EN enables channels 3 and 4 (3Y and 4Y). When low, the corresponding outputs enter high-impedance mode-preventing bus contention and allowing multiple SN75175DR devices to share a common data line without external bus switches.
Can the SN75175DR operate with supply voltages other than 5 V?
The SN75175DR is specified for recommended operation between 4.75 V and 5.25 V. While absolute maximum ratings allow up to 7 V on VCC, operation outside the 4.75–5.25 V range may cause undefined output behavior, increased power dissipation, or reduced noise margins. For reliable performance matching the published SN75175DR electrical characteristics-including VOL ≤ 0.5 V and VOH ≥ 2.7 V-the supply must remain within this 5-V ±5% window.
Is the SN75175DR pin-compatible with the MC3486?
Yes, the SN75175DR is a plug-in replacement for the MC3486, sharing identical pin configuration, electrical interface, and functional behavior. This compatibility allows direct substitution in legacy designs without PCB layout changes-preserving existing bill-of-materials and qualification status while upgrading to TI's improved manufacturing process, enhanced ESD robustness, and guaranteed long-term availability of the SN75175DR.
SN75175DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Receiver
- Protocol:
- RS422, RS423, RS485
- Number of Drivers/Receivers:
- 0/4
- Duplex:
- -
- Receiver Hysteresis:
- 50 mV
- Data Rate:
- -
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SN75175DR FAQ
1.How can I place an order for SN75175DR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN75175DR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SN75175DR reliable?
The price and inventory of SN75175DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN75175DR is usually 5 days.
3.What payment methods are accepted for SN75175DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN75175DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN75175DR?
SN75175DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN75175DR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SN75175DR?
For technical support, including SN75175DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN75175DR requirements.
6.How does Aetrix verify that SN75175DR is sourced from the original manufacturer or authorized distributors?
All SN75175DR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SN75175DR meets industry standards.
7.What is the process for return or replacement of SN75175DR?
All SN75175DR units undergo pre-shipment inspection (PSI). If there is an issue with SN75175DR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SN75175DR part is unused and in its original packaging.
Return procedure for SN75175DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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