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Texas Instruments DS34LV87TMX/NOPB
- Part No.:
- DS34LV87TMX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DS34LV87TMX/NOPB.pdf
- Description:
- IC TRANSCEIVER 4/0 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,421
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Product details
Overview
DS34LV87TMX/NOPB from Texas Instruments is a 3.3V quad differential line driver compliant with TIA/EIA-422-B and ITU-T V.11 standards, delivering ≥2V differential output voltage (VOD), ≤2 ns differential skew, and 10 ns max transition time across all four channels in a 16-pin SOIC package. It serves as a low-power, ESD-hardened interface for industrial serial communication links.
For engineers reviewing the DS34LV87TMX/NOPB datasheet, DS34LV87TMX/NOPB pinout, DS34LV87TMX/NOPB application, or DS34LV87TMX/NOPB equivalent, key selection criteria include guaranteed VOD ≥2V under 100Ω load, dual enable control for flexible channel gating, balanced crossover timing within 40 mV of 50% level, and interoperability with legacy 5V RS-422 receivers.
Technical Context
The DS34LV87TMX/NOPB implements four independent CMOS differential drivers with LVTTL/LVCMOS-compatible inputs and TRI-STATE-enabled outputs. Its dual enable architecture (per-channel EN and global EN logic) supports selective channel disable without affecting others.
It operates over −40°C to +85°C at 3.0–3.6V supply, ensuring VOD ≥2.0V (min) and VOC = 1.5–2.0V (typ) into 100Ω loads while maintaining <2 ns differential skew and <10 ns transition time - meeting full RS-422 AC timing compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VOD (min) | 2.0 V into 100Ω - ensures robust noise margin against RS-422 receiver thresholds |
| Differential skew | ≤2.0 ns - guarantees tight timing alignment across all four driver pairs |
| Transition time | ≤10 ns (20%–80%) - enables reliable operation up to 32 MHz data rate |
| ICC (max) | 100 μA static - supports battery-powered or ultra-low-power system modes |
| ESD rating | ≥7 kV HBM on cable I/O pins - reduces need for external protection in industrial environments |
| Operating temp | −40°C to +85°C - qualified for extended industrial temperature deployment |
| Supply range | 3.0 V to 3.6 V - compatible with standard 3.3V rail without regulation overhead |
Pinout & Package
DS34LV87TMX/NOPB is housed in a 16-pin SOIC (Package D0016A), 7.5 mm × 10.3 mm body, 1.27 mm pitch, RoHS-compliant with Sn lead finish and MSL Level-1 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 7 | Driver input (DI1–DI4) | LVTTL/LVCMOS-compatible digital inputs controlling respective differential outputs |
| 2, 4, 6, 8 | Enable input (EN1–EN4) | Active-high per-channel enables; all four must be high for corresponding DO+/DO− to drive |
| 9, 11, 13, 15 | Positive output (DO1+–DO4+) | Differential true-side outputs; swing between ≈0.2V and ≈3.1V under 100Ω load |
| 10, 12, 14, 16 | Negative output (DO1−–DO4−) | Differential complement-side outputs; inverted relative to DOx+, enabling common-mode rejection |
| 16 | GND | Ground reference for all driver circuits and enable logic |
| 16 | VCC | 3.3V supply pin; requires local 0.1 μF + 0.01 μF ceramic decoupling per TI recommendations |
Key Features
| Feature | Design Value |
|---|---|
| Quad RS-422 driver integration | Four fully independent drivers in one SOIC-16 package - reduces board area vs discrete solutions |
| Balanced output crossover | Typical crossing within 40 mV of 50% VCC - minimizes EMI and jitter in high-speed point-to-point links |
| Dual enable scheme | Per-channel EN plus shared logic - enables granular power management without redesigning control firmware |
| 330 μW static power | 100 μA ICC @ 3.3V - extends runtime in portable test equipment and remote sensor nodes |
| Pin compatibility | Direct replacement for DS26C31 in 3.3V systems - simplifies upgrade paths from 5V designs |
Applications
| Industrial PLC Backplane | Factory Automation Serial Link |
|---|---|
Use Scenario: High-noise factory floor connecting PLC CPU to distributed I/O modules via twisted-pair cabling. IC Role / Device Role / Timing Role: Quad differential driver transmitting four independent command/data streams over 15 m RS-422 links. Use Value: ≥2V VOD and −40°C to +85°C operation ensure signal integrity and reliability despite EMI and thermal cycling. | Use Scenario: Synchronized motion control network linking servo drives, encoders, and HMIs using deterministic serial protocols. IC Role / Device Role / Timing Role: Low-skew (≤2 ns) driver maintaining phase coherence across four axes' position feedback channels. Use Value: Tight differential skew preserves timing margins required by real-time EtherCAT or CANopen slave node synchronization. |
| Test Equipment Data Interface | Medical Diagnostic Imaging Link |
Use Scenario: Portable oscilloscope or logic analyzer interfacing with modular probe heads or calibration sources. IC Role / Device Role / Timing Role: Low-power (100 μA ICC), TRI-STATE-capable driver enabling dynamic channel enable/disable during multi-probe polling. Use Value: 330 μW static dissipation extends battery life; 7 kV HBM ESD protects against repeated hot-plug events. | Use Scenario: MRI or ultrasound subsystem transmitting time-critical image frame metadata between FPGA and analog front-end ASICs. IC Role / Device Role / Timing Role: EMI-minimized differential driver with controlled 40 mV crossover window reducing radiated emissions near sensitive RF components. Use Value: Balanced transition timing meets Class B EMC requirements without added ferrites or shielding layers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad RS-422 driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65LVD11DR | Single-ended enable only; no per-channel EN; 1.5 ns max skew | Requires external logic for per-channel disable; optimized for high-density single-driver layouts | Select when board space is constrained and per-channel gating is unnecessary |
| THVD1450DR | Integrated bus fault protection (±70V); higher VOD (2.5V min); 3.3V/5V tolerant I/O | Suitable for long-line fieldbus deployments with lightning-induced surges | Select when operating in unshielded outdoor or plant-perimeter wiring environments |
Compared with SN65LVD11DR and THVD1450DR, DS34LV87TMX/NOPB uniquely provides per-channel enable control and pin compatibility with legacy DS26C31 designs - making it optimal for upgrading existing 3.3V RS-422 backplanes without layout changes.
Availability
DS34LV87TMX/NOPB is available at Aetrix Electronics and suitable for industrial PLC backplanes, factory automation serial links, and portable test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant tape-and-reel packaging.
Supply support for DS34LV87TMX/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 company headquartered in Dallas, Texas, delivering analog, embedded processing, and connectivity technologies for industrial, automotive, and communications markets.
DS34LV87TMX/NOPB belongs to TI's high-speed interface product line, engineered specifically for low-voltage, low-power, and ESD-hardened differential communication in harsh industrial environments.
FAQ
What is the maximum data rate supported by DS34LV87TMX/NOPB?
The DS34LV87TMX/NOPB supports a maximum operating frequency of 32 MHz, verified by design and characterization per its switching specifications. This corresponds to a 64 Mbps NRZ data rate under ideal conditions. The device achieves this with ≤10 ns differential transition time and ≤2 ns skew, ensuring timing margins remain intact across all four channels in DS34LV87TMX/NOPB-based systems.
Does DS34LV87TMX/NOPB require external termination resistors?
Yes, DS34LV87TMX/NOPB requires external 100Ω termination across each differential pair at the receiver end to maintain signal integrity and prevent reflections. The datasheet recommends optional series termination (RT) near the driver output to further reduce ringing. DS34LV87TMX/NOPB itself does not integrate termination; its output stage is designed for direct connection to properly terminated transmission lines.
Can DS34LV87TMX/NOPB interface directly with 5V RS-422 receivers?
Yes, DS34LV87TMX/NOPB is explicitly designed for interoperability with existing 5V RS-422 networks. Its guaranteed minimum VOD of 2.0V into 100Ω meets the RS-422 receiver sensitivity threshold (≥200 mV), and its common-mode voltage range (1.5–2.0V) falls within the 5V receiver's acceptable input window. No level-shifting circuitry is needed when using DS34LV87TMX/NOPB to drive legacy 5V receivers.
What is the function of the dual enable scheme in DS34LV87TMX/NOPB?
The dual enable scheme in DS34LV87TMX/NOPB consists of four independent EN pins (pins 2, 4, 6, 8) - one per driver - allowing individual channel disable. When any EN is low, its corresponding DO+/DO− pair enters high-impedance TRI-STATE. This enables flexible power gating, bus arbitration, or fault isolation without affecting other active channels - a capability not found in single-enable alternatives like DS34LV87TMX/NOPB's predecessors.
Is DS34LV87TMX/NOPB pin-compatible with DS26C31?
Yes, DS34LV87TMX/NOPB is pin-compatible with DS26C31 in SOIC-16 packaging, sharing identical pin assignments for DI, EN, DO+, DO−, VCC, and GND. However, DS34LV87TMX/NOPB operates at 3.3V (vs 5V for DS26C31) and delivers lower ICC (100 μA vs ~25 mA), making it a drop-in upgrade for power-sensitive 3.3V systems - provided the host controller supports LVTTL levels, which DS34LV87TMX/NOPB natively does.
DS34LV87TMX/NOPB 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:
- Driver
- Protocol:
- RS422, RS485
- Number of Drivers/Receivers:
- 4/0
- Duplex:
- -
- Receiver Hysteresis:
- -
- Data Rate:
- -
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DS34LV87TMX/NOPB FAQ
1.How can I place an order for DS34LV87TMX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for DS34LV87TMX/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 DS34LV87TMX/NOPB reliable?
The price and inventory of DS34LV87TMX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS34LV87TMX/NOPB is usually 5 days.
3.What payment methods are accepted for DS34LV87TMX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS34LV87TMX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS34LV87TMX/NOPB?
DS34LV87TMX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS34LV87TMX/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 DS34LV87TMX/NOPB?
For technical support, including DS34LV87TMX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS34LV87TMX/NOPB requirements.
6.How does Aetrix verify that DS34LV87TMX/NOPB is sourced from the original manufacturer or authorized distributors?
All DS34LV87TMX/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 DS34LV87TMX/NOPB meets industry standards.
7.What is the process for return or replacement of DS34LV87TMX/NOPB?
All DS34LV87TMX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with DS34LV87TMX/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 DS34LV87TMX/NOPB part is unused and in its original packaging.
Return procedure for DS34LV87TMX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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