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Texas Instruments DS26C32ATM/NOPB
- Part No.:
- DS26C32ATM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DS26C32ATM/NOPB.pdf
- Description:
- IC TRANSCEIVER 0/4 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,368
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Product details
Overview
DS26C32ATM/NOPB from Texas Instruments is a quad differential line receiver IC designed for RS-422 and RS-423 digital data transmission systems. It delivers ±0.2 V input sensitivity over ±7 V common-mode range, 19 ns typical propagation delay, 60 mV input hysteresis, and TRI-STATE outputs with 6 mA drive capability-enabling robust noise-immune reception in industrial serial communication links.
For engineers reviewing the DS26C32ATM/NOPB datasheet, DS26C32ATM/NOPB pinout, DS26C32ATM/NOPB application, or DS26C32ATM/NOPB equivalent, key selection criteria include RS-422/RS-423 compliance, −40°C to +85°C operating range, SOIC-16 package compatibility, and enable-controlled TRI-STATE bus interface behavior.
Technical Context
The DS26C32ATM/NOPB implements four independent CMOS differential receivers with internal pull-up/pull-down resistors to prevent floating outputs on unused channels. Its input stage supports balanced line reception across ±14 V absolute maximum differential and common-mode voltages, while maintaining low ICC (23 mA typ) at 5 V supply.
TRI-STATE control is provided via a single active-high ENABLE input shared across all four receivers, with 22 ns typical enable-to-output delay and guaranteed logic thresholds (VIH = 2.0 V, VIL = 0.8 V). The device meets EIA RS-422 requirements and is pin compatible with DS26LS32A and AM26LS32 for drop-in replacement in legacy designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures stable operation across standard 5 V rail tolerances in industrial power environments |
| Operating Temperature | −40°C to +85°C - qualified for extended commercial and industrial ambient conditions |
| Differential Input Sensitivity | ±200 mV - guarantees reliable detection of small valid signal swings amid noise or line loss |
| Propagation Delay | 19 ns typical - supports >25 Mbps data rates in point-to-point or multidrop RS-422 links |
| Input Hysteresis | 60 mV - suppresses output chatter during slow-rising or noisy differential transitions |
| Output Drive | 6 mA source/sink - sufficient to directly drive TTL/CMOS loads without external buffering |
| Common-Mode Range | ±7 V - accommodates ground potential differences between nodes in distributed systems |
Pinout & Package
DS26C32ATM/NOPB is housed in a 16-pin SOIC (D) package with 1.27 mm pitch, JEDEC MS-012AC compliant, RoHS-compliant matte tin (SN) lead finish, and MSL Level-1 rating for unlimited floor life at ≤30°C/60% RH.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 7, 10 | Differential Input A−, B−, C−, D− | Inverting inputs for each of four receiver channels; referenced to corresponding non-inverting inputs |
| 2, 5, 8, 11 | Differential Input A+, B+, C+, D+ | Non-inverting inputs for each channel; define polarity and threshold reference for differential pair |
| 3, 6, 9, 12 | Receiver Output Y A, Y B, Y C, Y D | Active-high TTL/CMOS-compatible outputs; enter high-impedance state when ENABLE = low |
| 13 | ENABLE | Active-high global enable controlling all four outputs; must be ≥2.0 V to activate receivers |
| 14 | GND | Signal ground reference for inputs, outputs, and internal circuitry |
| 16 | VCC | +5 V supply pin; powers all receiver stages and output drivers |
Key Features
| Feature | Design Value |
|---|---|
| RS-422/RS-423 Compliance | Fully meets EIA-422 electrical requirements including input sensitivity, common-mode range, and output drive |
| TRI-STATE Output Control | Single ENABLE pin disables all four outputs simultaneously into high-impedance state for multi-receiver bus sharing |
| Input Hysteresis | 60 mV built-in hysteresis prevents metastability and false triggering on marginal or slow-rising signals |
| Zero-Voltage Input Tolerance | Inputs remain high-impedance and non-loading even when VCC = 0 V - safe for hot-swap or partial-power-down scenarios |
| Internal Bias Resistors | Pull-up and pull-down networks on unused inputs eliminate need for external termination and prevent oscillation |
Applications
| Industrial PLC Backplane | Point-of-Sale Terminal Interface |
|---|---|
Use Scenario: Differential data transmission between CPU and I/O modules across noisy factory-floor backplanes. IC Role / Device Role / Timing Role: Quad receiver converting RS-422 differential signals from remote I/O cards into single-ended TTL logic for microcontroller input. Use Value: ±7 V common-mode tolerance rejects ground-loop noise; 19 ns propagation enables real-time response in motion control loops. |
Use Scenario: Reliable receipt of transaction data from barcode scanners, magnetic stripe readers, and receipt printers in retail terminals. IC Role / Device Role / Timing Role: RS-423-compatible line receiver interfacing peripherals to embedded host controller via long cable runs. Use Value: 200 mV sensitivity ensures correct decoding despite voltage drop over 15 m cables; TRI-STATE allows shared bus arbitration. |
| Medical Imaging Data Link | Avionics Data Concentrator |
Use Scenario: High-integrity transfer of image frame metadata and control commands between imaging sensor head and processing unit. IC Role / Device Role / Timing Role: Noise-immune differential receiver ensuring bit-accurate command reception in EMI-sensitive diagnostic equipment. Use Value: 60 mV hysteresis eliminates glitches from RF interference near MRI magnets; −40°C to +85°C rating supports wide thermal envelope. |
Use Scenario: Aggregation of ARINC 429-like or custom differential telemetry streams from multiple avionics subsystems. IC Role / Device Role / Timing Role: Quad-channel receiver conditioning differential signals prior to FPGA-based protocol parsing and time-stamping. Use Value: Pin compatibility with DS26LS32A enables drop-in upgrade path in certified legacy hardware; SOIC-16 footprint simplifies rework. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad differential receiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS26LS32A | Bipolar process; higher ICC (35 mA typ); no zero-VCC input tolerance; identical pinout and logic | Higher power consumption and lower noise immunity; suitable only where legacy bipolar sourcing is required | Select DS26C32ATM/NOPB for lower power, better ESD margin, and hot-swap safety |
| AM26LS32ACN | Same bipolar architecture as DS26LS32A; slightly tighter propagation skew; no hysteresis spec | Lacks input hysteresis and common-mode range guarantee; not recommended for noisy environments | Prefer DS26C32ATM/NOPB when hysteresis, CMOS efficiency, or RS-422 compliance verification is required |
Compared with DS26LS32A and AM26LS32ACN, DS26C32ATM/NOPB offers lower quiescent current, guaranteed 60 mV hysteresis, and zero-VCC input safety-making it the preferred choice for modern industrial and medical designs requiring reliability, efficiency, and noise resilience.
Availability
DS26C32ATM/NOPB is available at Aetrix Electronics and suitable for industrial automation, point-of-sale systems, and medical data acquisition requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for DS26C32ATM/NOPB 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 connectivity technologies, with decades of expertise in interface ICs and industrial-grade signal conditioning.
The DS26C32ATM/NOPB belongs to TI's legacy RS-422/RS-423 interface product line, engineered specifically for noise-tolerant, multi-drop digital communication in harsh electromagnetic environments.
FAQ
What is the operating temperature range for DS26C32ATM/NOPB?
The DS26C32ATM/NOPB is rated for operation from −40°C to +85°C, making it suitable for industrial control cabinets, outdoor kiosks, and other environments with wide ambient temperature variation. This range is confirmed in the "Operating Conditions" table of the SNLS382C datasheet and applies specifically to the DS26C32AT variant, which DS26C32ATM/NOPB implements.
Does DS26C32ATM/NOPB support true RS-422 compliance?
Yes, DS26C32ATM/NOPB meets the EIA RS-422 standard requirements, including ±200 mV differential input sensitivity, ±7 V common-mode input range, and differential output drive capability. The datasheet explicitly states "Meets the Requirements of EIA Standard RS-422", and its electrical characteristics align with RS-422 test conditions defined in the standard.
Can DS26C32ATM/NOPB be used with a 3.3 V supply?
No, DS26C32ATM/NOPB requires a 4.5 V to 5.5 V supply per its Absolute Maximum and Operating Conditions specifications. It is not 3.3 V tolerant; applying 3.3 V will result in undefined operation and failure to meet guaranteed parameters such as VOH, VOL, and propagation delay. For 3.3 V systems, consider TI's newer 3.3 V–compatible receivers like SN65LBC179.
Is DS26C32ATM/NOPB pin-compatible with DS26LS32A?
Yes, DS26C32ATM/NOPB is explicitly documented as pin compatible with DS26LS32A and AM26LS32. The datasheet states "This product is pin compatible with the DS26LS32A and the AM26LS32", and both share identical SOIC-16 pin assignments, logic functions, and terminal definitions-enabling direct substitution without PCB modification.
What is the purpose of the internal pull-up and pull-down resistors in DS26C32ATM/NOPB?
The internal pull-up and pull-down resistors in DS26C32ATM/NOPB prevent floating inputs on unused receiver channels, eliminating output oscillation and undefined logic states. This feature removes the need for external biasing components, simplifying board layout and improving system reliability-especially in modular or configurable hardware where some channels may remain unconnected.
DS26C32ATM/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Receiver
- Protocol:
- RS422, RS423
- Number of Drivers/Receivers:
- 0/4
- Duplex:
- -
- Receiver Hysteresis:
- 60 mV
- Data Rate:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DS26C32ATM/NOPB FAQ
1.How can I place an order for DS26C32ATM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for DS26C32ATM/NOPB 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 DS26C32ATM/NOPB reliable?
The price and inventory of DS26C32ATM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS26C32ATM/NOPB is usually 5 days.
3.What payment methods are accepted for DS26C32ATM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS26C32ATM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS26C32ATM/NOPB?
DS26C32ATM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS26C32ATM/NOPB 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 DS26C32ATM/NOPB?
For technical support, including DS26C32ATM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS26C32ATM/NOPB requirements.
6.How does Aetrix verify that DS26C32ATM/NOPB is sourced from the original manufacturer or authorized distributors?
All DS26C32ATM/NOPB 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 DS26C32ATM/NOPB meets industry standards.
7.What is the process for return or replacement of DS26C32ATM/NOPB?
All DS26C32ATM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with DS26C32ATM/NOPB, 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 DS26C32ATM/NOPB part is unused and in its original packaging.
Return procedure for DS26C32ATM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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