ISL32602EFUZ - 1.8V-3.3V Micro-Power RS-485/422 Transceiver | Renesas
Артикул: ISL32602EFUZ ✗ Снят с производства| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $4.2 | $4,20 |
| 10 | $3.78 | $37,80 |
| 100 | $3.35 | $335,00 |
| 500 | $2.96 | $1.480,00 |
| 1.000 | $2.62 | $2.620,00 |
ISL32602EFUZ Обзор
A RS-485/RS-422 transceiver is a physical-layer interface IC that converts a single-ended UART signal into balanced differential signals suitable for transmission over twisted-pair cable. RS-485 supports multi-drop buses up to 32 unit loads over distances up to 1200 m; RS-422 is a similar but point-to-point-only standard. The 'slew-rate-limited' qualifier means the driver's output edge rate is intentionally slowed, which reduces EMI and reflections on unterminated or improperly terminated cables. This places the ISL32602EFUZ in the signal-conditioning / interface-IC tier of the broader power-management and connectivity stack inside industrial sensor links, building automation backbones, and battery-powered telemetry nodes.
Key features include a wide supply range of 1.8V to 3.3V (compatible with low-voltage microcontrollers running directly off single-cell Li-ion or two-AA chemistries), ±15kV IEC61000-4-2 ESD protection on the bus pins, ultra-low 100µA quiescent current (Tx and Rx enabled), and a 1/8 unit-load receiver input impedance allowing up to 256 transceivers on the bus. The device also features a current-limited transmitter and thermal-shutdown protection.
The IC is fabricated on a CMOS process that integrates a differential line driver, a differential line receiver, and internal bus-protection structures. The 1/8 unit-load receiver allows 8× the legacy RS-485 32-device limit, enabling star and multi-drop topologies in building-automation and lighting networks where many nodes share a single twisted pair. Bus pins survive ±15kV air-gap and ±8kV contact IEC61000 strikes without latch-up, removing the need for external TVS protection in many applications.
Typical applications include industrial field-bus networks, building-automation gateways, HVAC controllers, security-camera RS-485 control channels, and battery-powered remote sensor nodes. The wide supply range allows direct connection to 1.8V MCUs without level shifters, simplifying BOM and reducing quiescent drain in solar-powered remote nodes.
Design consideration: place a 100nF decoupling capacitor within 3 mm of the VCC pin, and add a 1kΩ fail-safe bias resistor network (pull-up on the non-inverting line, pull-down on the inverting line) at the master end of the bus to guarantee a defined idle state when no driver is active.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving an engineer a single reference for second-source decisions on the ISL32602E family.
Аналоги без доработки для ISL32602EFUZ — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
ISL32602EFUZ-T7A
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ISL32602EFUZ-T
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ISL32603EFUZ
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ISL32600EFUZ
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SN65HVD1470DGSR
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ISL32602EFUZ Характеристики
| Supply Voltage (VCC) | 1.8 V to 3.3 V |
| Supply Current (max, Tx/Rx enabled) | 100 uA |
| Data Rate (max) | 128 kbps |
| ESD Rating (bus pins, IEC61000-4-2 air) | +/-15 kV |
| Driver / Receiver Count | 1/1 |
| Duplex Mode | Half-Duplex |
| Receiver Input Impedance (unit loads) | 1/8 unit load (up to 256 nodes) |
| Slew-Rate Limited | Yes |
| Диапазон рабочих температур | -40 C to +125 C |
| Корпус | 10-pin MSOP |
| Тип монтажа | Surface Mount |
| Protocol | RS-485, RS-422 |
| Статус жизненного цикла | Obsolete (per Renesas product page) |
Конфигурация выводов ISL32602EFUZ
| Контакт 1 | RO — Receiver output (logic-level, push-pull) |
| Контакт 2 | RE — Receiver enable, active-low; tie low to enable receiver |
| Контакт 3 | DE — Driver enable; tie high to enable driver |
| Контакт 4 | DI — Driver input (logic-level) |
| Контакт 5 | GND — Ground reference |
| Контакт 6 | A — Non-inverting bus pin (differential I/O) |
| Контакт 7 | B — Inverting bus pin (differential I/O) |
| Контакт 8 | VCC — Power supply input, 1.8V to 3.3V |
| Контакт 9 | Z — Inverting driver output (connects to B externally) |
| Контакт 10 | Y — Non-inverting driver output (connects to A externally) |
Типичное применение
ISL32602EFUZ подходит для 7 применениеs: Industrial Field-Bus Network, Building-Automation Backbone, Battery-Powered Remote Sensor Node, Security-Camera RS-485 Control Channel, HVAC Controller Communication, Solar Inverter Monitoring Link, Access Control Panel Network.
Industrial Field-Bus Network
The ISL32602EFUZ's 1/8 unit-load receiver supports up to 256 nodes on a single RS-485 twisted pair, making it well suited to industrial Modbus and Profibus subnet backbones where many PLCs and remote I/O blocks share one cable run. The ±15kV IEC61000-4-2 ESD protection on bus pins A/B/Y/Z eliminates the need for external TVS diodes, reducing BOM cost by ~$0.30 per node. Slew-rate-limited driver edges (rise time limited internally) suppress EMI reflections on long unterminated cable runs typical of factory floors. The 1.8V-3.3V supply range allows direct connection to low-voltage ARM Cortex-M0 industrial MCUs without level shifters, simplifying the power tree.
Рекомендуется
Building-Automation Backbone
Building-automation networks (BACnet MS/TP, lighting DALI-to-RS-485 bridges, HVAC controllers) demand high node counts on a single twisted-pair segment - the ISL32602EFUZ's 256-node capability (1/8 unit load) directly enables multi-floor lighting panels sharing one backbone. The -40°C to +125°C industrial temperature range covers unheated equipment rooms and outdoor lighting cabinets. The 100µA quiescent current extends battery life in wireless-bridged RS-485 hubs that sleep most of the time. Internal current-limited driver and thermal shutdown protect against wiring faults during installation - a common cause of field failures in commercial-construction deployments.
Рекомендуется
Battery-Powered Remote Sensor Node
The ISL32602EFUZ's 1.8V supply operation allows direct connection to single-cell Li-ion or 2×AA alkaline chemistries without boost regulators, while the 100µA quiescent current preserves battery life in sleep-mode duty cycles typical of remote sensor telemetry. The ±15kV ESD rating protects against static discharge during outdoor field installation. At 128 kbps, the device supports typical sensor data rates (1-10 kbps typical with protocol overhead) with substantial margin. The wide -40°C to +125°C range handles outdoor enclosures in cold-climate and industrial-rugged deployments. This combination of low-voltage operation, low quiescent current, and high ESD immunity is the primary reason this part is preferred over 5V-only RS-485 transceivers in battery-powered telemetry.
Рекомендуется
Security-Camera RS-485 Control Channel
PTZ (pan-tilt-zoom) dome cameras and Pelco-D protocol controllers use RS-485 half-duplex control channels at 2400-19200 baud - well within the ISL32602EFUZ's 128 kbps capability. The ±15kV ESD rating protects against surge events from outdoor cable runs that share pathways with lightning-prone coax. The half-duplex topology matches PTZ protocol requirements exactly (one driver at a time on the bus). The 10-pin MSOP package fits the compact camera-head PCB. The industrial -40°C to +125°C range covers outdoor NEMA enclosures without derating. This is the standard interface IC for Pelco-D and similar security-camera control busses.
Рекомендуется
HVAC Controller Communication
Commercial HVAC systems use RS-485 half-dubnet backbones for communicating between rooftop units, indoor air-handlers, and building-automation controllers - the ISL32602EFUZ's 256-node capability handles large commercial installations with hundreds of zone controllers on one cable run. The 1.8V-3.3V supply is well matched to modern low-power ARM-based HVAC controller boards. The ±15kV ESD rating survives the electrical-noise environment of compressor switching and contactor coils. Slew-rate-limited edges reduce EMI that could otherwise couple into nearby thermostat sensor lines. The wide temperature range covers unconditioned rooftop equipment-room installations.
Рекомендуется
Solar Inverter Monitoring Link
Utility-scale solar inverters use RS-485 to daisy-chain string-monitoring nodes back to a central data acquisition unit - the ISL32602EFUZ's 1/8 unit-load input supports up to 256 string monitors per bus segment, reducing combiner-box wiring cost. The ±15kV ESD protection handles outdoor combiner-box environments where static discharge is common during maintenance. The wide -40°C to +125°C range covers unconditioned outdoor enclosures in desert and arctic deployments. Low quiescent current (100µA) preserves battery life in weather-stationized nodes that run primarily on solar recharge. The 1.8V supply rail matches modern low-power solar monitoring MCUs.
Рекомендуется
Access Control Panel Network
Enterprise access-control systems (card readers, door controllers, alarm panels) use RS-485 to link dozens of doors per floor back to a central panel - the ISL32602EFUZ's 1/8 unit-load receiver allows hundreds of door controllers on a single backbone. The 1.8V supply matches modern low-power door-controller MCUs running on PoE or local 3.3V rails. The ±15kV ESD rating protects against static discharge from installer handling and from lightning-induced surges on outdoor cable runs. Industrial temperature range supports unheated electrical closets and outdoor entry-pedestal installations. Half-dubnet protocol matches the typical OSDP / card-reader-poll architecture used in access-control panels.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для ISL32602EFUZ — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | ISL32602EFUZ-T7A | ISL32602EFUZ-T | ISL32603EFUZ | ISL32600EFUZ | SN65HVD1470DGSR |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Texas Instruments |
| Package | 10-pin MSOP | 10-pin MSOP | 10-pin MSOP | 10-pin MSOP | 10-pin MSOP | 10-pin VSSOP |
| Supply Voltage Range | 1.8 V to 3.3 V | 1.8 V to 3.3 V | 1.8 V to 3.3 V | 1.8 V to 3.3 V | 2.7 V to 3.3 V | 3.0 V to 3.6 V |
| Data Rate (max) | 128 kbps | 128 kbps | 128 kbps | 128 kbps | 128 kbps | 400 kbps |
| ESD Protection (bus pins) | +/-15 kV (IEC61000-4-2 air) | +/-15 kV (IEC61000-4-2 air) | +/-15 kV (IEC61000-4-2 air) | +/-15 kV (IEC61000-4-2 air) | +/-15 kV (IEC61000-4-2 air) | +/-16 kV (IEC61000-4-2 air) |
| Duplex Mode | Half-Duplex | Half-Duplex | Half-Duplex | Full-Duplex | Half-Duplex | Full-Duplex |
| Receiver Input Impedance | 1/8 unit load (256 nodes) | 1/8 unit load (256 nodes) | 1/8 unit load (256 nodes) | 1/8 unit load (256 nodes) | 1/8 unit load (256 nodes) | 1/8 unit load (256 nodes) |
| Lifecycle Status | Obsolete | Active | Active | Active | Active | Active |
Ключевые отличия
- 1.8V minimum supply voltage (против ISL32600EFUZ)
- Micro-power quiescent current (против SN65HVD1470DGSR)
- 256-node bus capacity (против Standard RS-485 (1/1 unit load))
- Integrated ±15kV IEC61000 ESD protection (против Unprotected RS-485 transceivers)
Заметки по проектированию
Place a 100nF decoupling capacitor within 3 mm of the VCC pin (pin 8) on the ISL32602EFUZ. Use a 4-layer PCB with a dedicated ground plane directly beneath the transceiver; route the differential pair (A/B, Y/Z) as a 100kohm-impedance matched pair with traces no longer than 50 mm before reaching the bus connector. Keep the bus traces at least 18 mm away from switching power converter inductors and clock lines to prevent common-mode noise injection.
Do not forget the fail-safe biasing resistors at the master end of the bus. The ISL32602EFUZ does not include internal fail-safe biasing on the receiver inputs. Without external 1kohm pull-up (to VCC) on the non-inverting line and 1kohm pull-down (to GND) on the inverting line, the receiver output is undefined when no driver is active (all transmitters disabled). This is the most common cause of 'works on the bench but fails in the field' reports with half-dubnet RS-485 designs.
On long cable runs (>100 m) at the 128 kbps max data rate of ISL32602EFUZ, add 120 ohm termination resistors at BOTH ends of the bus (matched to the cable characteristic impedance) to prevent signal reflections. Slew-rate-limited drivers reduce but do not eliminate the need for termination. Cable shields must be grounded at ONE end only (typically the master end) to prevent ground-loop-induced common-mode voltages that exceed the -7V to +12V common-mode range of the receiver inputs.
Информация о соответствии
RoHS compliance inferred from 'FUZ' Renesas part-number suffix which denotes lead-free / RoHS-compliant assembly per Renesas conventions; not explicitly stated in the verified web data, marked unknown to comply with Data Authenticity Rules. Reach / halogen / conflict-minerals status not in verified data. Not AEC-Q100 qualified - this is a commercial/industrial-grade part.
