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ADM3488ARZ-REEL7

3.3V RS-485/RS-422 full-duplex transceiver, 250kbps, ±15kV ESD, 8-SOIC

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Manufacturer Part：

ADM3488ARZ-REEL7

Package：

8-SOIC (5.0 x 6.2 x 1.75 mm)

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Description

Product Overview

The ADM3488ARZ-REEL7 from Analog Devices is a 3.3V full-duplex RS-485/RS-422 transceiver with ±15kV ESD protection in an 8-SOIC package. Slew-rate-limited for 250kbps operation, it supports up to 32 nodes on the bus with 12kOhm receiver input impedance.

Key Specifications

Protocol RS-485 / RS-422
Duplex Full Duplex
Data Rate 250kbps
Supply Voltage 3V ~ 3.6V
ESD Protection ±15kV (HBM)
Nodes on Bus Up to 32
Package 8-SOIC (SOIC_N)
Operating Temperature -40°C to +85°C

Features

  • 3.3V single supply operation
  • ±15kV ESD protection on RS-485 I/O pins
  • Slew-rate-limited drivers minimize EMI and reflections
  • Full-duplex with dedicated driver/receiver paths
  • Thermal shutdown and short-circuit protection
  • Industry-standard 75176 pinout
  • Receiver open-circuit fail-safe design

Applications

  • Industrial process control networks
  • Power and energy metering
  • Telecommunications equipment
  • EMI-sensitive systems
  • Local area networks

The ADM3488ARZ-REEL7 from Analog Devices is a 3.3V low-power RS-485/RS-422 transceiver featuring ±15kV ESD protection on all bus pins. As a full-duplex device, it provides separate differential driver outputs and receiver inputs with independent enable controls. The slew-rate-limited driver output minimizes EMI and eliminates reflections caused by improperly terminated cables, enabling error-free transmission at data rates up to 250kbps. With 12kOhm receiver input impedance, up to 32 transceivers can share a single bus. The device includes thermal shutdown and short-circuit protection for robust operation in harsh industrial environments.

The ADM3488E converts between single-ended TTL/CMOS logic levels and differential RS-485/RS-422 signals. The driver section generates differential outputs compliant with TIA/EIA RS-485 standards, while the receiver converts differential bus signals back to single-ended logic. The slew-rate-limited driver output transitions gradually to reduce high-frequency spectral content that causes EMI and cable reflections. When disabled or powered off, outputs enter high-impedance state to avoid bus loading. The fail-safe receiver ensures a logic-high output when inputs are floating or the bus is open-circuited. The ±15kV ESD protection uses transient voltage suppression structures on the bus pins.

Pin Name Type Function
1 RO Output Receiver output
2 RE Input Receiver enable (active low)
3 DE Input Driver enable (active high)
4 DI Input Driver data input
5 GND Power Ground
6 A I/O Non-inverting bus pin
7 B I/O Inverting bus pin
8 VCC Power 3.3V supply
  • Industrial process control RS-485 networks (Modbus RTU)
  • Smart meter power/energy monitoring communication
  • Telecommunications equipment interface
  • Building automation HVAC control networks
  • EMI-sensitive environments with long cable runs
Manufacturer Part Number Package Notes
TI SN65HVD11D 8-SOIC 3.3V, 250kbps, half-duplex
ADI MAX3488ECSA+ 8-SOIC 3.3V, 250kbps, full-duplex
ADI ADM3486EARZ 8-SOIC 3.3V, 2.5Mbps, half-duplex
TI SN65HVD10D 8-SOIC 3.3V, 10Mbps, full-duplex
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All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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