ISL8485CP - 5V RS-485/RS-422 Transceiver | Renesas
Teilenummer: ISL8485CP ✓ AktivISL8485CP Übersicht
A transceiver combines a differential line driver and differential receiver into one interface component. In the transmit direction, the driver converts a logic-level signal into a balanced differential voltage across a twisted-pair bus; in the receive direction, the receiver converts the differential bus voltage back into a logic-level signal. RS-422 commonly supports point-to-point, balanced signaling, while RS-485 permits multiple drivers and receivers on a shared bus when the system implements the required addressing, biasing, and contention controls.
The ISL8485CP family is identified as a low-power 5 V RS-485/RS-422 solution with options described by the manufacturer as high-speed or slew-rate-limited. This distinction is important when designing a bus: slew-rate control can reduce high-frequency ringing and electromagnetic interference, while a high-speed configuration can improve propagation delay. The exact speed, slew-rate, output-current, and receiver-threshold limits are not present in the supplied verified excerpts and must be confirmed in the manufacturer datasheet before final circuit design.
The device is implemented in an 8-PDIP package for through-hole assembly rather than a compact surface-mount land pattern. This makes it suitable for industrial controllers, data-acquisition equipment, instrumentation, and legacy interface boards where DIP soldering, prototyping, or through-hole serviceability is preferred. The balanced interface also helps reject common-mode noise when the transmitter and receiver reference a common signal ground and the cable routing is controlled.
Typical applications include factory-floor serial links, industrial control modules, remote sensor interfaces, laboratory equipment, and building automation equipment. Designers should confirm the device's exact drive strength, receiver thresholds, data rate, enable or shutdown behavior, and bus termination requirements from the full datasheet. They should also verify whether a fail-safe receiver, ESD rating, slew-rate selection, or automotive qualification is required for the target environment.
This page combines verified distributor availability, package information, pricing data, source links, and replacement analysis with practical RS-485 design guidance. It deliberately distinguishes confirmed facts from parameters that still require datasheet verification, helping engineers evaluate the ISL8485CP without mistaking incomplete web snippets for complete technical specifications.
Drop-in-Alternativen für ISL8485CP – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
ISL8485CPZ
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ISL8485CP Technische Daten
| Product Type | RS-485/RS-422 transceiver |
| Versorgungsspannung | 5 V |
| Driver Count | 1 |
| Receiver Count | 1 |
| Transceiver Configuration | Half-duplex |
| Supported Standards | RS-485 and RS-422 |
| Logic Technology | CMOS |
| Operating Mode Options | High-speed or slew-rate-limited |
| Power Classification | Low-power |
| Gehäuse | 8-PDIP |
| Montageart | Through-hole |
| Termination Count | 1 |
ISL8485CP 8-pdip Pinbelegungsleitfaden
Pinbelegung für ISL8485CP (8-pdip-Gehäuse). Pin-Nummerierung, Funktionen und Anschlussdiagramme sind im Herstellerdatenblatt definiert. Entnehmen Sie diesem den genauen Footprint und Lötrichtlinien.
Keine detaillierten Pinbelegungsdaten verfügbar für ISL8485CP.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
ISL8485CP ist geeignet für 6 Anwendungs: Industrial RS-485 Control Networks, RS-422 Point-to-Point Data Links, Factory Sensor and Actuator Interfaces, Laboratory and Test Equipment, Building Automation Equipment, Legacy Communication Interface Cards.
Industrial RS-485 Control Networks
The ISL8485CP fits industrial control nodes that communicate over a balanced RS-485 bus using a 5 V supply. Its confirmed one-driver and one-receiver arrangement supports half-duplex transmit and receive functions through a single transceiver, while the 8-PDIP package suits through-hole industrial boards and serviceable control modules. Designers should place termination only at the physical ends of the bus, use biasing to maintain an idle differential state, and verify the exact driver strength and data rate in the datasheet. The transceiver is intended for RS-485 protocol handling rather than arbitration or surge protection, so the system must also address grounding, cable faults, ESD, and industrial noise coupling.
Empfohlen
RS-422 Point-to-Point Data Links
The ISL8485CP is suitable for point-to-point RS-422 links where one end transmits and the other receives over a balanced pair. The verified 5 V supply, one-driver and one-receiver configuration, and half-duplex transceiver arrangement support conventional differential serial interfaces, while low-power CMOS construction fits compact control and instrumentation electronics. Layout should keep the driver, receiver, and protection network close to the connector, route the differential pair as a coupled pair, and provide a solid signal-ground reference. Exact receiver thresholds, propagation delay, and maximum signaling distance are not present in the supplied excerpts and should be obtained from the full datasheet before defining the communication guarantee.
Empfohlen
Factory Sensor and Actuator Interfaces
The ISL8485CP can connect a factory sensor or actuator controller to a balanced RS-485 fieldbus through its 5 V half-duplex transceiver. The 8-PDIP footprint is practical for legacy PLC boards, DIN-rail interface modules, and through-hole acquisition equipment, while the combined driver and receiver reduce the number of separate line-driver components. The implementation must account for field-side surge and ESD protection, connector placement, and galvanic-isolation requirements. Do not assume the bare transceiver satisfies safety isolation; verify whether an isolated interface such as ISO1500DBQ is required for the installation and keep the external protection devices outside the transceiver's sensitive input path.
Empfohlen
Laboratory and Test Equipment
The ISL8485CP is appropriate for laboratory instruments that exchange command and measurement data over a balanced RS-485 or RS-422 connection. Its confirmed 5 V operation, low-power CMOS design, and single-driver/single-receiver configuration support a compact bidirectional instrument interface, while the 8-PDIP package simplifies prototype construction and through-hole repairs. Signal integrity remains important: route the cable-side traces as a controlled differential pair, minimize stub branches, and maintain common-mode voltage within the receiver's permitted range. The verified snippets do not state data rate or common-mode limits, so bench designers should confirm those values in the complete datasheet and choose cable length and termination accordingly.
Empfohlen
Building Automation Equipment
The ISL8485CP can support distributed building-automation controllers that use a 5 V RS-485 bus for sensor commands, status reporting, or configuration traffic. Its one-driver and one-receiver arrangement provides a half-duplex node interface, and the 8-PDIP package is useful in through-hole supervisory controllers, relay-interface boards, and retrofit modules. Building systems frequently run long cables through variable electrical environments, making proper termination, common-mode protection, and grounding essential. The component should not be treated as an isolated safety barrier, and its exact ESD and temperature ratings must be confirmed before use near lighting, HVAC, or mains-derived equipment.
Empfohlen
Legacy Communication Interface Cards
The ISL8485CP is a practical choice for legacy serial-interface cards that retain an 8-PDIP transceiver footprint and require a modern orderable RS-485/RS-422 device. The through-hole package supports hand soldering, socketed prototyping, and straightforward board repair, while the low-power 5 V transceiver combines the balanced driver and receiver functions. A replacement should be checked for identical pin names, enable polarity, receiver fail-safe thresholds, and shutdown behavior rather than footprint alone. The supplied verified excerpts do not expose a complete pin table or production-lifecycle statement, so engineers should compare the full ISL8485CP and ISL8485CPZ documents before converting an existing design.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ISL8485CP – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ISL8485CPZ |
|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics |
| Package | 8-PDIP | 8-DIP |
| Product Type | RS-485/RS-422 transceiver | RS-485/RS-422 transceiver |
| Supply Voltage | 5 V | 5 V |
| Driver Count | 1 | 1 |
| Receiver Count | 1 | 1 |
| Transceiver Configuration | Half-duplex | Half-duplex |
| Mounting Type | Through-hole | Through-hole |
| Operating Mode Options | High-speed or slew-rate-limited family options | High-speed or slew-rate-limited family options |
Wichtigste Unterscheidungsmerkmale
- Documented same-package replacement candidate (vs. ISL8485CPZ)
- Single-component bidirectional balanced interface (vs. ISL8485CPZ)
- Through-hole serviceability (vs. ISL8485CPZ)
Designhinweise
Route the cable-side differential pair as a tightly coupled pair on the PCB and connect it to the transceiver with minimal trace length and no unnecessary stubs. Keep the ground reference adjacent to the pair when the interface implementation allows it. Place termination, biasing, and protection components close to the transceiver pins, while placing surge suppressors close to the external connector so transient energy is diverted before it reaches the IC.
Do not treat matching package dimensions as proof of drop-in compatibility. Before replacing ISL8485CP with ISL8485CPZ, compare every pin name and function, enable and shutdown polarity, receiver fail-safe thresholds, driver limits, operating temperature, and supply range. An RS-485 transceiver also does not automatically provide termination, fail-safe biasing, isolation, or surge protection; those functions must be implemented separately when the application requires them.
Select between the high-speed and slew-rate-limited family option according to the complete datasheet. A slew-rate-limited device can reduce edge-rate harmonics and ringing on long or poorly terminated cables, while a high-speed option can reduce protocol timing overhead. The supplied excerpts do not disclose either part's exact data rate, propagation delay, or differential thresholds, so these values must be verified before making that selection.
Compliance-Informationen
The supplied verified excerpts identify a 5 V CMOS RS-485/RS-422 transceiver in an 8-PDIP package, but they do not expose RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. AEC-Q100 is marked not_applicable because this industrial interface transceiver is not identified as an automotive-qualified device in the provided data.
