DS89C387TMEA – 12-Channel RS422/RS485 Driver IC – Texas Instruments

Optimize industrial communication systems with the DS89C387TMEA RS422/RS485 driver from Texas Instruments. This surface-mount interface IC delivers robust signal transmission for noise-prone environments, featuring 12 independent driver channels in a compact SSOP package. PCX ensures authentic Texas Instruments components with same-day shipping and dedicated technical support.

Key Features

• Interface Type: Driver (12 channels, 0 receivers)
• Protocol Support: RS422, RS485 industrial standards
• Voltage Range: 4.5V to 5.5V operation
• Temperature Rating: Industrial-grade -40°C to 85°C
• Mounting Style: Surface mount (48-SSOP package)
• Base Part: DS89C387 series reliability

Technical Specifications

Housed in a 48-BSSOP (7.50mm width) surface-mount package, this driver IC provides 12 independent outputs for multi-point communication networks. The 4.5–5.5V operating voltage ensures compatibility with standard 5V systems, while its extended temperature range maintains signal integrity in harsh conditions. Note: This product has reached end-of-life status but remains available through PCX’s legacy component inventory.

Typical Applications

• Factory automation control systems
• Motor drive and PLC interfaces
• Industrial sensor networks
• Building management controllers
• Telecommunications infrastructure

About Texas Instruments

Texas Instruments (TI) is a global semiconductor leader with over 90 years of innovation in analog and embedded processing technologies. Their interface solutions set industry benchmarks for reliability in mission-critical applications from automotive to industrial automation.

TI components undergo rigorous qualification testing, ensuring consistent performance in extreme environments. As a TI authorized channel partner, PCX guarantees genuine parts with full traceability and compliance documentation.

About Interface Driver ICs

Interface drivers like the DS89C387TMEA act as signal amplifiers that convert low-power logic signals into robust industrial communication voltages. They are essential for maintaining data integrity across long cable runs in electrically noisy settings where signal degradation would otherwise cause system failures.

RS485/RS422 drivers specifically enable differential signaling, which cancels electromagnetic interference through twisted-pair wiring. This technology forms the backbone of industrial networks, building automation, and motor control systems requiring noise immunity and multi-drop capabilities.

Packaging

Supplied in protective tube packaging to prevent damage during shipping and handling. PCX handles all components with ESD-safe procedures and offers custom kitting services for volume orders.

FAQs

Q: Is this IC suitable for new designs?
A: This part is obsolete; we recommend consulting PCX’s engineering team for alternative active solutions.

Q: What cable length does RS485 support with this driver?
A: Typically 1,200 meters at 100kbps when using proper termination and twisted-pair cabling.

Q: Can I use 3.3V logic with this 5V IC?
A: Inputs are TTL-compatible but require 5V supply. Use level shifters for 3.3V microcontroller interfaces.

Q: Does PCX provide datasheets?
A: Yes: Download DS89C387TMEA Datasheet (hosted on PCXCo.com)

Q: Are these RoHS-compliant?
A: This pre-dates RoHS directives; contact PCX for compliance status of specific lots.

Q: How quickly can PCX ship obsolete parts?
A: Most legacy components ship within 24 hours from our climate-controlled warehouse.

Product image shown is representational; refer to datasheet for exact dimensions.

Secure Your Industrial Components Today!

Rely on PCX for authentic Texas Instruments ICs and expert supply chain solutions. Order DS89C387TMEA now for guaranteed same-day shipment! Email [email protected] for design support.