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DS34LV87TMX/NOPB
Texas Instruments
IC DRIVER 4/0 16SOIC
21710 Pcs New Original In Stock
4/0 Driver RS422, RS485 16-SOIC
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Minimum 1
5.0 / 5.0
- (72 Ratings)
DS34LV87TMX/NOPB
Product Overview
1355299
DiGi Electronics Part Number
DS34LV87TMX/NOPB-DGManufacturer
Texas Instruments
DS34LV87TMX/NOPB
Description
IC DRIVER 4/0 16SOICInventory
21710 Pcs New Original In Stock
4/0 Driver RS422, RS485 16-SOIC
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
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DS34LV87TMX/NOPB Technical Specifications
Category
Interface, Drivers, Receivers, Transceivers
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Type
Driver
Protocol
RS422, RS485
Number of Drivers/Receivers
4/0
Duplex
-
Data Rate
-
Voltage - Supply
3V ~ 3.6V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (0.154", 3.90mm Width)
Supplier Device Package
16-SOIC
Base Product Number
DS34LV87
Datasheet & Documents
HTML Datasheet
DS34LV87TMX/NOPB-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
DS34LV87TMX/NOPBDKR
2156-DS34LV87TMX/NOPB-TI
DS34LV87TMX/NOPBTR
DS34LV87TMX/NOPBCT
*DS34LV87TMX/NOPB
DS34LV87TMX-NDR
DS34LV87TMXNOPB
NATNSCDS34LV87TMX/NOPB
Standard Package
2,500
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
항상 고품질 포장을 통해 제품을 안전하게 받을 수 있어 매우 만족스럽습니다.
de desembre 02, 2025
Service de livraison efficace et support client toujours prêt à aider. Excellent!
de desembre 02, 2025
Ich schätze die rasche Versandabwicklung, die meinen Einkauf sehr zuverlässig macht.
de desembre 02, 2025
I highly recommend DiGi Electronics for their trustworthy and friendly support.
de desembre 02, 2025
Their prices are very reasonable, and the staff always go the extra mile.
de desembre 02, 2025
Customer service was friendly, knowledgeable, and genuinely eager to help.
de desembre 02, 2025
Their logistics system is robust, enabling quick dispatch and delivery during high-demand periods.
de desembre 02, 2025
Shipment was lightning fast and the packaging kept everything intact.
de desembre 02, 2025
Excellent pricing strategy and a top-rated website experience.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the DS34LV87TMX/NOPB in a high-noise industrial RS485 environment with long cable runs?
When integrating the DS34LV87TMX/NOPB in noisy industrial environments with long cables, the primary risks include signal integrity degradation due to EMI and ground potential differences. Since the DS34LV87TMX/NOPB is a driver-only IC (no receivers), ensure proper termination, use twisted-pair cabling, and incorporate external transient voltage suppression (TVS) diodes on the line. Additionally, because it operates at 3.3V logic, avoid direct interface with 5V microcontrollers without level shifting. For long runs, consider adding isolation using a digital isolator (e.g., ISO7741) in conjunction with a separate isolated power supply to prevent ground loops and improve system reliability.
Can the DS34LV87TMX/NOPB directly replace the MAX3487E in a legacy RS422 design, and what compatibility issues should be evaluated?
While the DS34LV87TMX/NOPB appears functionally similar to the MAX3487E (both are 4-driver RS422/RS485 transceivers), caution is needed during replacement. The DS34LV87TMX/NOPB is 3.3V-only (3V–3.6V supply), whereas the MAX3487E allows 3.0V–5.5V, so replacing in a 5V system requires a level-shifting interface. Also verify control signal polarity and enable timing—TI and Maxim differ slightly in pin logic in some variants. Check that DE/RE control lines are compatible and that bus capacitance loading remains within limits to prevent signal distortion. Always validate under worst-case conditions including temperature and cable length.
How does the lack of receiver functionality in the DS34LV87TMX/NOPB affect full-duplex RS485 network topology design?
The DS34LV87TMX/NOPB provides only 4 drivers and no receivers, so it cannot support bidirectional communication on its own. This limits its use to unidirectional (transmit-only) applications or systems where separate receiver ICs (e.g., DS34LV17TM/NOPB) are used on the same board. In full-duplex networks, this creates a point-to-point transmit-only node. Designers must route received data via a companion receiver or use a full transceiver elsewhere in the system. Ensure careful PCB layout to avoid crosstalk between high-speed driver outputs and any nearby receiver traces.
What thermal and electrical considerations arise when driving multiple RS485 buses simultaneously with the DS34LV87TMX/NOPB in a continuous-duty application?
Driving multiple buses simultaneously with the DS34LV87TMX/NOPB can lead to increased power dissipation due to simultaneous switching of all four drivers. Calculate total current using I_TOTAL ≈ 4 × (VTERM / 54Ω + IBUS_LEAKAGE), especially if terminating each line. At 85°C ambient, ensure PCB thermal vias and copper traces are sufficient to dissipate heat, as the SOIC package has limited thermal resistance performance. Avoid continuous DC drive on all four channels—pulse usage with duty cycling reduces thermal risk. Monitor VCC supply droop due to peak currents, and use local 10μF + 0.1μF decoupling on Pin 16.
What are the reliability implications of using the DS34LV87TMX/NOPB in an outdoor application with wide temperature swings and high humidity?
The DS34LV87TMX/NOPB supports -40°C to +85°C operation and has MSL1 (unlimited floor life), making it suitable for harsh environments. However, in outdoor applications with high humidity, ensure conformal coating is applied to prevent leakage currents and corrosion on PCB traces near high-impedance driver outputs. Avoid condensation that could cause unintended current paths. Also validate signal integrity over temperature, as cable impedance and driver output strength vary slightly with temperature. For long-term reliability, use guarded PCB traces and include watchdog monitoring on the host MCU to detect driver lockup due to noise or ESD events, even with proper TVS protection.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
DS34LV87TMX/NOPB CAD Models
Texas Instruments DS34LV87TMX/NOPB PCB symbols & footprints
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