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Texas Instruments DS34LV87TM
- Part No.:
- DS34LV87TM
- Manufacturer:
- Texas Instruments
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DS34LV87TM.pdf
- Description:
- IC TRANSCEIVER 4/0 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,437
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Product details
Overview
DS34LV87TM 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 output differential voltage into 100Ω, 2 ns max driver skew, 10 ns max transition time, and 330 μW static power at 3.3V. It serves as a high-speed interface driver in industrial serial communication links.
For engineers reviewing the DS34LV87TM datasheet, DS34LV87TM pinout, DS34LV87TM application, or DS34LV87TM equivalent, this page provides verified electrical parameters, SOIC-16 package mapping, TRI-STATE dual-enable control behavior, ESD-hardened cable I/O pins (≥7 kV HBM), and interoperability details with legacy 5V RS-422 networks.
Technical Context
The DS34LV87TM implements four independent CMOS differential drivers with LVTTL/LVCMOS-compatible inputs and dual enable logic (EN active-high per channel). Each driver features balanced DO+/DO− outputs with guaranteed ≤40 mV crossover deviation at 50% voltage level for low EMI.
It operates across −40°C to +85°C with 3.0–3.6V supply, supports 32 MHz maximum frequency under full-channel switching, and integrates on-chip protection diodes on all cable-facing pins-ensuring robustness in noisy industrial environments without external clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.0–3.6V - Enables direct integration into 3.3V system rails without level-shifting. |
| Output Differential Voltage (VOD) | ≥2.0V into 100Ω - Meets minimum RS-422 drive strength for noise-immune long-haul transmission. |
| Driver Skew | ≤2.0 ns - Ensures timing alignment across all four channels for synchronous multi-drop bus designs. |
| Transition Time | ≤10 ns (20%–80%) - Supports clean signal edges up to 32 MHz operation with minimal jitter. |
| Static ICC | 100 μA max - Allows battery-backed or ultra-low-power standby modes via EN control. |
| ESD Rating (Cable Pins) | ≥7 kV HBM - Reduces need for external TVS diodes in field-deployed equipment. |
| Operating Temperature | −40°C to +85°C - Qualified for industrial automation, motor control, and factory-floor applications. |
Pinout & Package
DS34LV87TM is housed in a 16-pin SOIC package (Package Drawing D, JEDEC MS-012AA), with 1.27 mm pitch, 10.3 mm × 6.5 mm body size, and RoHS-compliant CU-SN lead finish (Level-1 MSL).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 7, 10 (DI1–DI4) | Driver Input | LVTTL/LVCMOS-compatible data inputs for each of four differential channels. |
| 2, 5, 8, 11 (EN1–EN4) | Enable Input | Active-high per-channel enable controlling TRI-STATE output state independently. |
| 3, 6, 9, 12 (DO+1–DO+4) | Differential Output (+) | True-side output terminal; swings between ≈0.2V and ≈3.1V under load. |
| 13, 14, 15, 16 (DO−1–DO−4) | Differential Output (−) | Complement-side output terminal; inverted swing relative to DO+ for balanced signaling. |
| 16 (VCC) | Power Supply | 3.3V nominal supply input; requires local 0.1 μF + 0.01 μF ceramic decoupling. |
| 8 (GND) | Ground Reference | Common return path for all drivers and enable logic; must be low-impedance. |
Key Features
| Feature | Design Value |
|---|---|
| Quad RS-422 Compliance | Fully meets TIA/EIA-422-B and ITU-T V.11 electrical requirements across full temperature range. |
| Dual Enable Architecture | Independent EN pins per channel allow selective activation-reducing dynamic power in partial-bus systems. |
| Balanced Crossover Control | Typical DO+/DO− crossing within 40 mV of 50% VCC ensures <1% duty-cycle distortion at high data rates. |
| Low-Power TRI-STATE | Leakage <±20 μA when disabled-enables hot-swap capability and zero-current idle states. |
| Pin Compatibility | Direct replacement for DS26C31 in SOIC-16 footprint, preserving PCB layout while upgrading to 3.3V operation. |
Applications
| Industrial PLC Backplane | Factory Automation Serial Bus |
|---|---|
Use Scenario: High-noise cabinet-mounted programmable logic controller communicating with remote I/O modules over twisted-pair cabling. IC Role / Device Role / Timing Role: Quad differential driver transmitting four independent RS-422 data streams (e.g., encoder feedback, sensor polling, command relay) simultaneously. Use Value: 2 ns skew and 10 ns transition time ensure deterministic timing across distributed nodes; ≥7 kV ESD rating prevents field failures during maintenance. | Use Scenario: Multi-axis motion controller synchronizing servo drives via daisy-chained RS-422 links in packaging machinery. IC Role / Device Role / Timing Role: Transmitting position setpoints and status acknowledgments across 30-meter cable runs with immunity to motor-drive EMI. Use Value: ≥2V VOD into 100Ω maintains >15 dB noise margin at 10 Mbps; SOIC-16 package enables compact board layout near connector zones. |
| Test Equipment Data Link | Medical Diagnostic Interface |
Use Scenario: Automated test system routing calibrated analog/digital signals between instrument racks using shielded differential pairs. IC Role / Device Role / Timing Role: Driving four isolated RS-422 channels for synchronized trigger distribution, calibration data upload, and fault reporting. Use Value: 100 μA static ICC extends uptime in battery-powered portable testers; dual EN allows per-channel power gating during idle phases. | Use Scenario: MRI or ultrasound subsystem connecting front-end sensors to central processing unit through EMI-sensitive patient-area cabling. IC Role / Device Role / Timing Role: Transmitting real-time image acquisition data and safety interlock signals with strict common-mode rejection. Use Value: VOC = 1.5–2.0V and ΔVOC ≤ ±400 mV guarantee stable common-mode bias-critical for avoiding ground-loop induced artifacts in analog signal paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad differential driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65LVDS32DR | LVDS output standard (not RS-422); 350 mV differential swing; no V.11 compliance. | Requires termination at receiver end; unsuitable for long-distance (>10 m) or multi-drop RS-422 topologies. | Select only if system uses LVDS receivers and short-point-to-point links. |
| THVD1450DR | Integrated 3.3V RS-422 transceiver (driver + receiver); higher ICC (1.8 mA); no quad-driver-only option. | Replaces discrete driver/receiver pairs but adds unnecessary receive circuitry where only transmit is needed. | Choose when bidirectional half-duplex RS-422 is required and board space permits integrated solution. |
Compared with SN65LVDS32DR and THVD1450DR, the DS34LV87TM uniquely delivers true RS-422/V.11 compliance in a dedicated quad driver form factor-enabling drop-in upgrades from legacy 5V DS26C31 while maintaining backward compatibility, ESD robustness, and precise skew control essential for deterministic industrial networks.
Availability
DS34LV87TM is available at Aetrix Electronics and suitable for industrial PLC backplanes, factory automation serial buses, and medical diagnostic interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for DS34LV87TM 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 experience in industrial-grade interface solutions.
The DS34LV87TM belongs to TI's high-reliability RS-422/RS-485 interface portfolio, engineered specifically for noise-tolerant, multi-drop serial communication in harsh industrial and medical environments.
FAQ
What is the maximum operating frequency supported by the DS34LV87TM?
The DS34LV87TM supports a maximum operating frequency of 32 MHz when all four channels are switching with 40%/60% duty cycle measured at 50% voltage level. This specification is ensured by design and characterization-not just typical performance-and applies across the full −40°C to +85°C temperature range and 3.0–3.6V supply. The DS34LV87TM achieves this using sub-10 ns transition times and tightly controlled propagation skew.
Does the DS34LV87TM require external termination resistors?
Yes, the DS34LV87TM requires external 100Ω termination resistors at the far end of the transmission line to prevent signal reflections-consistent with TIA/EIA-422-B practice. The device itself does not integrate termination; its output stage is designed to drive standard 100Ω differential loads. Proper termination ensures the guaranteed ≥2V VOD and maintains signal integrity over distances up to 1200 meters at lower data rates.
Can the DS34LV87TM interface directly with 5V RS-422 receivers?
Yes, the DS34LV87TM is explicitly designed for interoperability with existing 5V RS-422 networks. Its output differential voltage (≥2V into 100Ω) exceeds the 200 mV minimum required by RS-422 receivers, and its common-mode range (1.5–2.0V) falls within the 5V receiver's acceptable input window. No level-shifting circuitry is needed-making the DS34LV87TM ideal for upgrading legacy 5V systems to 3.3V logic while retaining infrastructure.
What is the function of the dual enable scheme in the DS34LV87TM?
The DS34LV87TM features individual EN1–EN4 pins-one per driver channel-that provide per-channel TRI-STATE control. This dual enable architecture allows selective disabling of unused drivers to minimize dynamic power consumption and reduce EMI emissions during partial-bus operation. Unlike global enable schemes, it preserves active channels while powering down idle ones-critical in modular industrial systems where only subsets of I/O are used at any given time.
Is the DS34LV87TM pin-compatible with the DS26C31?
Yes, the DS34LV87TM is pin-compatible with the DS26C31 in the SOIC-16 package (Package Drawing D), sharing identical pin assignments for DI, EN, DO+, DO−, VCC, and GND. This allows direct PCB-level replacement in legacy designs, enabling migration from 5V to 3.3V operation without layout changes-while retaining RS-422 compliance, timing performance, and mechanical fit.
DS34LV87TM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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
DS34LV87TM FAQ
1.How can I place an order for DS34LV87TM through Aetrix?
Please submit a Request for Quotation (RFQ) for DS34LV87TM 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 DS34LV87TM reliable?
The price and inventory of DS34LV87TM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS34LV87TM is usually 5 days.
3.What payment methods are accepted for DS34LV87TM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS34LV87TM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS34LV87TM?
DS34LV87TM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS34LV87TM 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 DS34LV87TM?
For technical support, including DS34LV87TM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS34LV87TM requirements.
6.How does Aetrix verify that DS34LV87TM is sourced from the original manufacturer or authorized distributors?
All DS34LV87TM 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 DS34LV87TM meets industry standards.
7.What is the process for return or replacement of DS34LV87TM?
All DS34LV87TM units undergo pre-shipment inspection (PSI). If there is an issue with DS34LV87TM, 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 DS34LV87TM part is unused and in its original packaging.
Return procedure for DS34LV87TM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DS34LV87TM Tags
-
ATA6561-GAQW-N
Microchip Technology
-
ATA6561-GBQW-N
Microchip Technology
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SP485ECN-L/TR
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THVD1400DR
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