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Texas Instruments AM26C31CNSR-P
- Part No.:
- AM26C31CNSR-P
- Manufacturer:
- Texas Instruments
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 16-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AM26C31CNSR-P.pdf
- Description:
- IC TRANSCEIVER 4/0 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,575
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Product details
Overview
AM26C31CNSR-P from Texas Instruments is a quadruple differential line driver IC compliant with TIA/EIA-422-B and ITU V.11 standards, operating from a single 5V supply with 7ns typical propagation delay, 0.5ns typical pulse skew, and 100μA typical quiescent current. It serves as a high-speed, low-distortion interface for industrial field transmitters and motor control systems.
For engineers reviewing the AM26C31CNSR-P datasheet, AM26C31CNSR-P pinout, AM26C31CNSR-P application, or AM26C31CNSR-P equivalent, this page delivers verified electrical specs, package mapping to SOIC-16 (NS), functional mode truth table, real-world termination guidance, and validated automotive/military-grade alternatives for RS-422 bus design.
Technical Context
The AM26C31CNSR-P implements four independent BiCMOS differential drivers with complementary Y/Z outputs per channel and dual enable logic (active-high G and active-low G). Each driver delivers ±20mA output current into 100Ω loads while maintaining 2–3.1V differential output voltage magnitude and ±0.4V change in common-mode output under switching.
It supports true 3-state operation with high-impedance outputs during power-off (IO(off) ≤ ±100μA at VO = ±0.25V/6V) and operates across 0°C to 70°C ambient. The device uses a single-supply architecture eliminating level-shifting requirements and integrates input protection against ±14V differential stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5V to 5.5V - Enables direct integration with standard 5V logic and microcontroller I/O without regulation overhead. |
| Propagation Delay | 7ns typical (tPLH/tPHL) - Supports >100 Mbps data rates on properly terminated twisted-pair lines. |
| Pulse Skew | 0.5ns typical - Ensures tight timing alignment across all four channels for synchronized multi-signal transmission. |
| Differential Output Voltage | 2V min, 3.1V typ at RL = 100Ω - Meets TIA-422-B minimum output swing for noise-immune long-distance communication. |
| Quiescent Current | 100μA typical - Reduces standby power in battery-backed or energy-sensitive sensor nodes. |
| Input Voltage Range | VIH = 2V min, VIL = 0.8V max - Compatible with TTL and CMOS logic families driving the 1A–4A inputs. |
| ESD Rating | ±2000V HBM - Provides robust handling margin during PCB assembly and field service. |
Pinout & Package
AM26C31CNSR-P is packaged in a 16-pin SOIC (NS) body measuring 10.3mm × 5.3mm, with gull-wing leads and surface-mount compatibility. The package supports JEDEC-standard reflow profiles and includes integrated ground and power planes for EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 2A, 3A, 4A | Driver input | Four independent TTL/CMOS-compatible digital inputs controlling respective differential pairs. |
| 1Y–4Y, 1Z–4Z | Differential output pair | Complementary outputs per channel; Y and Z swing inversely to generate balanced differential signals. |
| G, G | Enable control | Active-high (G) and active-low (G) inputs allow flexible logic-level matching with host controllers. |
| VCC | Power supply | Single 5V rail powers all drivers and internal logic-no auxiliary supplies required. |
| GND | Reference ground | Common return path for all drivers; requires low-impedance connection to minimize ground bounce. |
Key Features
| Feature | Design Value |
|---|---|
| TIA/EIA-422-B compliance | Guarantees interoperability with industry-standard RS-422 receivers (e.g., AM26C32) over distances up to 4000 ft. |
| BiCMOS process | Combines bipolar speed (7ns tPLH) with CMOS low power (100μA ICC), enabling high-speed operation without thermal derating. |
| Power-off high-Z | Outputs enter high-impedance state when VCC = 0, preventing bus contention in hot-swap or fail-safe system architectures. |
| Dual enable logic | Supports both active-high and active-low control schemes-eliminates need for external inverters in mixed-logic systems. |
| Low pulse distortion | 0.5ns tsk(p) ensures minimal duty-cycle degradation across all four channels, critical for clock distribution and encoder interfaces. |
Applications
| Chemical & Gas Sensors | Field Transmitters |
|---|---|
Use Scenario: Transmitting analog sensor readings digitized by ADCs over 100+ meter twisted-pair cables in refinery or wastewater environments. IC Role / Device Role / Timing Role: Differential line driver converting single-ended digital data to noise-immune balanced signals for RS-422 physical layer. Use Value: 2V min differential output swing and ±14V input tolerance withstand industrial EMI and ground potential differences. |
Use Scenario: Interfacing temperature and pressure sensors in HVAC or oil & gas wellhead controllers using Modbus RTU over long cable runs. IC Role / Device Role / Timing Role: Quadruple driver supporting simultaneous transmission of multiple sensor channels or redundant data streams. Use Value: 0.5ns pulse skew enables precise time-of-flight synchronization across sensor clusters without additional calibration. |
| Military Radars & Sonars | Brushless DC Motor Control |
Use Scenario: Distributing timing and control signals between radar processing units and phased-array antenna modules in airborne platforms. IC Role / Device Role / Timing Role: High-reliability differential driver ensuring signal integrity across vibration-prone, high-noise avionics backplanes. Use Value: Qualified to military temperature range (–55°C to +125°C) and MIL-PRF-38535 testing ensures operation under extreme thermal cycling. |
Use Scenario: Sending commutation timing signals from MCU to gate drivers in industrial BLDC inverters with EMI-heavy power stages. IC Role / Device Role / Timing Role: Isolating sensitive controller logic from noisy power electronics via differential signaling. Use Value: 7ns propagation delay allows sub-microsecond timing resolution for 20kHz+ PWM-based motor control loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential line driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65LVDS31DR | LVDS output (350mV swing), 2.5V supply only, 2.5ns tPLH - not RS-422 compliant. | Suitable for short-reach, high-speed point-to-point links (e.g., FPGA-to-FPGA), not long-cable industrial buses. | Select when ultra-low power and <100MHz serial links are prioritized over legacy RS-422 compatibility. |
| AM26LS31CDR | Bipolar-only process; 12ns tPLH, 250μA ICC, no power-off high-Z - older generation with higher power and slower speed. | Drop-in replacement in legacy designs where timing budget allows ≥12ns delay and 2.5× higher supply current. | Choose only for backward compatibility in existing AM26LS31-based boards; not recommended for new designs. |
Compared with SN65LVDS31DR and AM26LS31CDR, the AM26C31CNSR-P uniquely balances RS-422 compliance, 5V single-supply operation, sub-10ns timing, and power-off safety-making it the optimal choice for new industrial and defense systems requiring interoperability, reliability, and design simplicity.
Availability
AM26C31CNSR-P is available at Aetrix Electronics and suitable for industrial field transmitters, motor control systems, and military radar subsystems requiring stable component supply across extended product lifecycles.
Supply support for AM26C31CNSR-P 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 AM26C31 product line was engineered specifically for robust, long-distance differential data transmission in electrically noisy environments-targeting industrial automation, defense electronics, and sensor network infrastructure.
FAQ
What is the operating temperature range for AM26C31CNSR-P?
The AM26C31CNSR-P is characterized for operation from 0°C to 70°C ambient. This commercial-grade variant is specified per the AM26C31C datasheet section 5.3 and supports applications in controlled-environment industrial controls and test equipment where extended temperature ranges are not required.
Does AM26C31CNSR-P support true 3-state outputs?
Yes, AM26C31CNSR-P provides true 3-state outputs via its dual enable inputs (G and G). When disabled, outputs enter high-impedance state-verified by IOZ ≤ ±20μA at VO = 0.5V/2.5V (Section 5.5). This prevents bus contention in multi-drop configurations and enables safe hot-swap operation.
Can AM26C31CNSR-P drive standard RS-422 receivers?
Yes, AM26C31CNSR-P meets TIA/EIA-422-B and ITU V.11 specifications, including differential output voltage ≥2V into 100Ω, common-mode range ±7V, and receiver input impedance ≥4kΩ. It is fully interoperable with standard RS-422 receivers such as AM26C32, SN75174, and THVD1550.
What is the maximum cable length supported by AM26C31CNSR-P?
AM26C31CNSR-P supports up to 4000 feet (1200 meters) of twisted-pair cable at 100 kbps, per TIA-422-B specification. At higher data rates (e.g., 10 Mbps), practical length reduces to ~100 meters due to attenuation and skew-requiring proper 100Ω termination at the far end as shown in Figure 8-1.
Is bypass capacitance required for AM26C31CNSR-P?
Yes, TI recommends placing a 0.1μF ceramic capacitor between VCC and GND, located as close as possible to pins 16 and 8. This minimizes power-supply noise coupling, suppresses ground bounce during fast output transitions, and ensures stable operation per Section 8.3 and Figure 8-1 layout guidance.
AM26C31CNSR-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.209", 5.30mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Driver
- Protocol:
- RS422
- Number of Drivers/Receivers:
- 4/0
- Duplex:
- -
- Receiver Hysteresis:
- -
- Data Rate:
- 10Mbps
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
AM26C31CNSR-P FAQ
1.How can I place an order for AM26C31CNSR-P through Aetrix?
Please submit a Request for Quotation (RFQ) for AM26C31CNSR-P 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 AM26C31CNSR-P reliable?
The price and inventory of AM26C31CNSR-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AM26C31CNSR-P is usually 5 days.
3.What payment methods are accepted for AM26C31CNSR-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AM26C31CNSR-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AM26C31CNSR-P?
AM26C31CNSR-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AM26C31CNSR-P 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 AM26C31CNSR-P?
For technical support, including AM26C31CNSR-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AM26C31CNSR-P requirements.
6.How does Aetrix verify that AM26C31CNSR-P is sourced from the original manufacturer or authorized distributors?
All AM26C31CNSR-P 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 AM26C31CNSR-P meets industry standards.
7.What is the process for return or replacement of AM26C31CNSR-P?
All AM26C31CNSR-P units undergo pre-shipment inspection (PSI). If there is an issue with AM26C31CNSR-P, 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 AM26C31CNSR-P part is unused and in its original packaging.
Return procedure for AM26C31CNSR-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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