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Texas Instruments SN75ALS192NS
- Part No.:
- SN75ALS192NS
- Manufacturer:
- Texas Instruments
- Package:
- 16-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
SN75ALS192NS.pdf
- Description:
- IC TRANSCEIVER 4/0 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
SN75ALS192NS from Texas Instruments is a quadruple differential line driver IC designed for EIA/TIA-422-B and ITU V.11 compliant data transmission over twisted-pair lines. It delivers 20 Mbaud data rate, 14 ns typical propagation delay, ±20 mA output drive, single 5-V supply operation, and complementary TTL-compatible enable inputs (G and G̅).
For engineers reviewing the SN75ALS192NS datasheet, SN75ALS192NS pinout, SN75ALS192NS application, or SN75ALS192NS equivalent, this device is selected for high-speed industrial serial links requiring robust differential signaling, low-power Schottky performance, and compatibility with legacy 3-state TTL control logic.
Technical Context
This IC implements four independent differential drivers, each with complementary outputs (Y/Z) and dual active-high/active-low enable inputs (G/G̅), enabling flexible bus control in half-duplex or multipoint RS-422 systems. Its architecture supports simultaneous enable/disable of all drivers while maintaining high-impedance outputs during power-off or disable states.
Designed using advanced low-power Schottky (ALS) technology, the SN75ALS192NS achieves sub-10 ns typical propagation delay at 26 mA standby current. It meets ANSI/EIA/TIA-422-B electrical requirements including ≥1.5 V differential output voltage (|VOD1|), ±3 V common-mode output range (VOC), and input leakage <100 µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 20 Mbaud - supports high-speed point-to-point or multi-drop serial communication up to 20 million symbols per second. |
| Propagation Delay | 14 ns typical - enables tight timing margins in synchronous serial interfaces with minimal skew between channels. |
| Differential Output Voltage | ≥1.5 V (|VOD1|) - ensures noise immunity and reliable receiver detection under worst-case load and supply conditions. |
| Supply Current | 45 mA max - low power consumption allows integration into thermally constrained industrial control modules. |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded systems including PLC I/O modules and instrumentation backplanes. |
| Output Drive | ±20 mA - sufficient to drive 100 Ω differential loads while maintaining signal integrity across 1200 m cable runs. |
| Input Leakage | <100 µA (low level), <1 µA (high level) - minimizes loading on upstream TTL or CMOS logic sources. |
Pinout & Package
SN75ALS192NS is supplied in a 16-pin plastic small-outline (SOIC) package (NS suffix), with 1.27 mm lead pitch and standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 2A, 3A, 4A | Data Input | Four independent TTL-compatible digital inputs driving respective differential driver stages. |
| 1Y, 2Y, 3Y, 4Y | Positive Output | Non-inverted differential output terminal for each driver channel (Y = A when enabled). |
| 1Z, 2Z, 3Z, 4Z | Negative Output | Inverted differential output terminal (Z = NOT A when enabled); forms balanced pair with Y. |
| G, G̅ | Complementary Enable | Active-high (G) and active-low (G̅) inputs allow either polarity logic to enable/disable all four drivers simultaneously. |
| VCC | Power Supply | Single +5 V supply (4.75–5.25 V) powers all drivers and internal logic; no split or negative rail required. |
| GND | Ground Reference | Common return path for supply and signal references; must be low-impedance for noise rejection. |
Key Features
| Feature | Design Value |
|---|---|
| EIA/TIA-422-B & V.11 Compliance | Fully satisfies differential driver requirements including output voltage, common-mode range, and slew rate for interoperability with certified receivers like SN75ALS193. |
| Complementary Enable Inputs | G and G̅ pins eliminate need for external inverters, simplifying interface with microcontroller GPIOs or FPGA control logic asserting either high or low enable. |
| High-Impedance Power-Off State | Outputs remain high-Z even when VCC = 0 V, preventing back-driving or bus contention during hot-swap or power sequencing events. |
| Low-Power Schottky Architecture | Delivers 20 Mbaud speed with only 26 mA typical ICC (all disabled), reducing thermal load in dense PCB layouts. |
| TTL-Compatible Interface | Accepts standard TTL input thresholds (VIH ≥ 2 V, VIL ≤ 0.8 V) and drives 3-state TTL loads directly without level-shifting circuitry. |
Applications
| Industrial Serial Bus | Factory Automation Link |
|---|---|
|
Use Scenario: Long-distance data transmission between PLC master and remote I/O modules over 500+ meter twisted-pair cabling in noisy factory environments. IC Role / Device Role / Timing Role: Differential line driver converting TTL-level controller outputs into robust EIA-422 signals with common-mode noise rejection. Use Value: Enables reliable 20 Mbaud operation despite >1 kV common-mode transients, eliminating need for isolated RS-485 transceivers in cost-sensitive applications. |
Use Scenario: Synchronizing motion controllers and servo drives via deterministic serial command bus in CNC machine tool backplanes. IC Role / Device Role / Timing Role: Quadruple driver providing four independent differential channels for position, velocity, enable, and fault feedback signals. Use Value: Sub-14 ns propagation delay and <6 ns output skew ensure precise inter-channel timing alignment critical for coordinated axis movement. |
| Legacy Equipment Interface | Test & Measurement Instrumentation |
|
Use Scenario: Retrofitting modern microcontrollers into aging industrial equipment originally designed for AM26LS31-based RS-422 interfaces. IC Role / Device Role / Timing Role: Pin-compatible upgrade delivering identical functionality with improved speed, lower power, and enhanced ESD tolerance. Use Value: Direct drop-in replacement eliminates PCB redesign; 20 Mbaud capability extends usable bandwidth beyond original 10 Mbaud limit. |
Use Scenario: Driving calibrated differential reference signals from DAQ system to multiple synchronized oscilloscope inputs or spectrum analyzers. IC Role / Device Role / Timing Role: Precision line driver maintaining amplitude accuracy and phase coherence across four matched output pairs. Use Value: Tight parameter matching (e.g., ±0.2 V ∆|VOD|, ±0.2 V ∆|VOC|) ensures consistent signal fidelity across all channels for multi-channel measurement correlation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential line driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN75ALS192N | Same die, 16-pin PDIP package (through-hole); higher thermal resistance (736 mW @ 70°C vs. NS SOIC's 608 mW). | Suitable for prototyping or legacy through-hole assembly; less suitable for high-density surface-mount production. | Select SN75ALS192N only when manual soldering or socket-based testing is required; SN75ALS192NS preferred for automated SMT lines. |
| AM26LS31 | Original predecessor; 10 Mbaud max, 25 mA ICC max, no power-off high-Z guarantee, wider propagation delay spread (15–25 ns). | Valid for backward compatibility where speed and power are not limiting; lacks SN75ALS192NS's 20 Mbaud headroom and robust disable behavior. | Choose AM26LS31 only for exact form-fit-function replacement in field-replaced units; SN75ALS192NS offers measurable improvements in speed, power, and safety. |
Compared with SN75ALS192N and AM26LS31, the SN75ALS192NS provides superior thermal performance in compact SMT layouts, guaranteed 20 Mbaud operation, and fail-safe high-impedance outputs during power loss-making it optimal for new industrial designs requiring reliability and scalability.
Availability
SN75ALS192NS is available at Aetrix Electronics and suitable for industrial automation, factory floor communications, and test equipment requiring stable component supply with long-term lifecycle support.
Supply support for SN75ALS192NS 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 specializing in analog, embedded processing, and interface solutions, with decades of expertise in industrial-grade signal conditioning and communication ICs.
The SN75ALS192NS belongs to TI's legacy ALS (Advanced Low-Power Schottky) interface product line, engineered specifically for robust, high-speed differential data transmission in electrically noisy industrial environments.
FAQ
What is the maximum data rate supported by the SN75ALS192NS?
The SN75ALS192NS is specified to operate reliably at data rates exceeding 20 Mbaud. This performance is validated under recommended operating conditions (VCC = 4.75–5.25 V, TA = 0°C to 70°C) with proper termination and layout practices. The device's <14 ns typical propagation delay and low output skew support clean signal edges at this rate, making SN75ALS192NS suitable for high-speed industrial serial links where timing margin is critical.
Does the SN75ALS192NS support true 3-state operation?
Yes, the SN75ALS192NS provides full 3-state (high-impedance) output control via complementary enable inputs G and G̅. When either enable is inactive, all four differential output pairs (1Y/1Z through 4Y/4Z) enter a high-Z state, isolating the bus. Critically, outputs remain high-Z even when VCC = 0 V-ensuring safe hot-swap and power sequencing behavior not found in all line drivers. This feature is explicitly confirmed in the datasheet's "High Output Impedance in Power-Off Condition" specification.
Is the SN75ALS192NS pin-compatible with the AM26LS31?
Yes, the SN75ALS192NS is a direct pin-compatible and functionally enhanced replacement for the AM26LS31. Both devices share identical 16-pin SOIC (NS) and PDIP (N) footprints, identical pin assignments (including G/G̅ enables and Y/Z outputs), and compatible TTL input/output logic levels. The SN75ALS192NS improves upon the AM26LS31 with higher speed (20 vs. 10 Mbaud), lower supply current (45 mA vs. 60 mA max), and guaranteed power-off high-Z behavior-making SN75ALS192NS a seamless upgrade.
What are the key compliance standards met by the SN75ALS192NS?
The SN75ALS192NS meets or exceeds ANSI Standard EIA/TIA-422-B and ITU Recommendation V.11 for differential line drivers. These standards define mandatory electrical parameters including minimum differential output voltage (≥1.5 V), common-mode output range (±3 V), input impedance, and noise immunity requirements. Compliance ensures interoperability with certified receivers such as the SN75ALS193 and guarantees robust operation in electrically harsh industrial settings where common-mode noise exceeds 1 kV.
Can the SN75ALS192NS operate from a 3.3-V supply?
No, the SN75ALS192NS is designed exclusively for single 5-V operation, with recommended supply range of 4.75 V to 5.25 V. Its internal ALS circuitry, input threshold levels (VIH ≥ 2 V, VIL ≤ 0.8 V), and output drive strength are optimized for 5-V TTL compatibility. Operation below 4.75 V risks marginal timing, reduced noise margin, and potential failure to meet EIA-422-B output voltage specifications. For 3.3-V systems, consider TI's newer 3.3-V compliant RS-422 drivers such as the THVD1450, not the SN75ALS192NS.
SN75ALS192NS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 75ALS
- Package/Case:
- 16-SOIC (0.209", 5.30mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
SN75ALS192NS FAQ
1.How can I place an order for SN75ALS192NS through Aetrix?
Please submit a Request for Quotation (RFQ) for SN75ALS192NS 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 SN75ALS192NS reliable?
The price and inventory of SN75ALS192NS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN75ALS192NS is usually 5 days.
3.What payment methods are accepted for SN75ALS192NS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN75ALS192NS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN75ALS192NS?
SN75ALS192NS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN75ALS192NS 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 SN75ALS192NS?
For technical support, including SN75ALS192NS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN75ALS192NS requirements.
6.How does Aetrix verify that SN75ALS192NS is sourced from the original manufacturer or authorized distributors?
All SN75ALS192NS 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 SN75ALS192NS meets industry standards.
7.What is the process for return or replacement of SN75ALS192NS?
All SN75ALS192NS units undergo pre-shipment inspection (PSI). If there is an issue with SN75ALS192NS, 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 SN75ALS192NS part is unused and in its original packaging.
Return procedure for SN75ALS192NS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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