ISL8488IP - 250kbps Full-Duplex RS-485/RS-422 | Renesas
Référence : ISL8488IP ✗ Fin de vieISL8488IP Présentation
An RS-485/RS-422 transceiver is an interface IC that converts logic-level digital signals into differential bus voltages and converts received differential bus signals back into CMOS-compatible logic. In the broader electronics hierarchy, it is an interface IC within the transceiver family, designed for reliable point-to-point or multipoint communication over cables and industrial backplanes. The ISL8488IP supports both RS-485 and RS-422 system requirements while operating from a single 5 V supply.
Key verified characteristics include a 250 kbps maximum signaling rate, full-duplex operation, 5 V supply operation, integrated RS-485/RS-422 transceiver functionality, and slew-rate-limited signaling. The absence of dedicated transmit and receive enable inputs is useful in applications where the interface direction is fixed or managed elsewhere. Its low-power design is intended for embedded industrial, communications, instrumentation, and control systems where reduced energy use and controlled edge rates are important.
The device combines differential bus outputs with a receive path designed for data-link applications. Because the ISL8488IP is slew-rate limited, engineers should evaluate its 250 kbps rating against protocol timing, cable length, termination requirements, and the waveform behavior of the connected system. The 8-PDIP package favors through-hole construction, thermal management through the printed-circuit board, and applications that favor a conventional DIP footprint over a surface-mount package.
Typical uses include industrial controller links, remote instrumentation, point-to-point communications equipment, factory data acquisition, and embedded systems exchanging commands between a controller and a remote peripheral. Full-duplex operation can simplify systems that continuously require independent transmit and receive paths. The lack of separate enable pins also reduces external control logic, although it may not suit designs that require direction switching or controlled bus tri-state behavior.
For a new layout, place the transceiver near the connector and bus entry, route the differential pair as a tightly coupled pair, apply the appropriate termination and protection network, and maintain a continuous ground reference where required by the communication standard. Check the manufacturer datasheet for exact receiver thresholds, driver limits, supply-current values, temperature limits, and absolute maximum ratings before releasing production hardware.
This page combines the verified 250 kbps, 5 V, full-duplex, RS-485/RS-422, slew-limited, 8-PDIP, and no-enable characteristics with practical integration guidance. It also distinguishes verified facts from unavailable datasheet details so procurement and engineering teams can identify what must be checked in the full manufacturer documentation.
Alternatives de remplacement direct pour ISL8488IP — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Aucune alternative de remplacement direct disponible pour ce produit.
Demander des alternativesISL8488IP Spécifications
| Product Type | RS-485/RS-422 transceiver |
| Tension d'alimentation | 5 V |
| Maximum Data Rate | 250 kbps |
| Duplex Mode | Full duplex |
| Supported Standards/Interfaces | RS-485 and RS-422 |
| Driver Configuration | 1/1 transceiver |
| Slew Rate | Slew-rate limited |
| Power Class | Low power |
| Transmit Enable | No dedicated transmit-enable pin |
| Receive Enable | No dedicated receive-enable pin |
| Boîtier | 8-pin plastic DIP (8-PDIP) |
| Type de montage | Through-hole |
| Lead-Free Status | RoHS non-compliant |
Guide de configuration des broches du ISL8488IP 8-pin plastic dip (8-pdip)
Configuration des broches du ISL8488IP (boîtier 8-pin plastic dip (8-pdip)). La numérotation des broches, les fonctions et les schémas de connexion sont définis dans la fiche technique du fabricant. Consultez-la pour l'empreinte exacte et les directives de soudage.
Aucune donnée de brochage détaillée disponible pour ISL8488IP.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
ISL8488IP convient pour 6 applications: Industrial Controller Data Links, Remote Instrumentation, Point-to-Point Data Acquisition, Factory Automation Equipment, Building and Facilities Control, Embedded Communication Modules.
Industrial Controller Data Links
The ISL8488IP fits fixed-direction industrial controller links because it combines a 5 V supply with full-duplex RS-485/RS-422 operation at up to 250 kbps. It can connect a controller to a remote peripheral using separate differential transmit and receive paths. Its slew-rate-limited signaling helps control high-frequency content on the cable, while the 8-PDIP package supports through-hole assembly. Before deployment, confirm the manufacturer's temperature, surge, and ESD limits and implement the termination and protection required by the installation environment.
Recommandé
Remote Instrumentation
The ISL8488IP is appropriate for low- to moderate-speed remote instrumentation links where independent send and receive channels simplify the wiring architecture. Its verified 250 kbps maximum data rate is suitable for many measurement-control messages, while full-duplex operation avoids sharing a single half-duplex bus pair. The slew-rate-limited output can help reduce edge-related stress on longer interconnects. Deployment still requires confirmation of receiver thresholds, common-mode range, isolation needs, and the exact termination scheme from the manufacturer datasheet.
Recommandé
Point-to-Point Data Acquisition
The ISL8488IP supports point-to-point data-acquisition equipment that exchanges commands and measurements between a local controller and a remote terminal. Full duplex allows the controller to transmit commands while simultaneously receiving telemetry, and the absence of dedicated enable pins can reduce external control circuitry. Its verified 5 V operation and 250 kbps rating align with many low-bandwidth acquisition systems. Engineers should still evaluate cable length, grounding, noise immunity, and transient protection, particularly in industrial environments.
Recommandé
Factory Automation Equipment
The ISL8488IP can be evaluated for factory automation equipment that uses reliable differential wiring between controllers, sensors, and remote I/O stations. Its low-power 5 V design, 250 kbps rate, and slew-rate-limited outputs suit moderate-speed command and status links, while the 8-PDIP package is convenient for through-hole industrial modules. Qualification requires review of operating temperature, ESD, surge, and common-mode limits, none of which are present in the supplied search snippets. External protection may also be necessary around exposed cables.
Recommandé
Building and Facilities Control
The ISL8488IP is a candidate for building-control panels, HVAC controllers, and remote equipment interfaces using RS-422 or RS-485 wiring. Full-duplex operation can support simultaneous commands and status reporting, while the 250 kbps rate is more than adequate for many supervisory-control messages. The device's fixed-direction operation is advantageous when transmit and receive paths remain permanently assigned. Validate line protection, surge immunity, grounding, and environmental temperature requirements before using the part in permanently installed building equipment.
Recommandé
Embedded Communication Modules
The ISL8488IP can serve as the wired communication interface in an embedded module that exchanges serial data with a host controller. Its 5 V operation, full-duplex configuration, and 250 kbps capability cover common low-bandwidth telemetry and command protocols, while the 8-PDIP package permits straightforward through-hole assembly. The lack of enable pins simplifies fixed-direction implementations but may prevent use in shared buses requiring switched high-impedance states. Confirm logic thresholds, driver loading, and bus-node count against the complete manufacturer datasheet.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ISL8488IP — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit |
|---|---|
| Package | 8-PDIP |
| Brand | Renesas Electronics |
| Device Type | RS-485/RS-422 transceiver |
| Supply Voltage | 5 V |
| Maximum Data Rate | 250 kbps |
| Duplex Mode | Full duplex |
| Slew Rate | Slew-rate limited |
| Enable Inputs | No dedicated transmit or receive enable pins |
| RoHS Status | RoHS non-compliant |
Principaux différenciateurs
- Fixed-direction full-duplex interface (vs Enable-equipped RS-485 transceivers)
- Controlled bus transitions (vs Unlimited-slew-rate 250 kbps transceivers)
- Through-hole industrial integration (vs Equivalent 8-pin surface-mount transceivers)
Notes de conception
Place the ISL8488IP near the communication connector or board edge to minimize the unshielded trace distance exposed to external noise. Route the differential pair as a closely coupled pair on the same PCB layer, with continuous reference ground beneath the pair where the board stack-up permits. Avoid routing the bus through switching-power supply areas and avoid adding test pads or routing stubs that create impedance discontinuities.
The verified 250 kbps slew-rate-limited operation must be included in the complete point-to-point link calculation. Confirm the receiver's input thresholds, driver impedance, bus termination values, cable length, topology, and grounding arrangement in the manufacturer datasheet before release. A cable that works electrically in a laboratory can still fail in service because reflections, common-mode noise, or poor reference grounding accumulate over the installed distance.
Do not assume that an 8-pin DIP RS-485 transceiver with a similar data rate is a drop-in replacement. Confirm every pin, the 5 V input range, receiver output polarity, driver output limits, receiver thresholds, enable-pin arrangement, and package dimensions. The ISL8488IP has no dedicated transmit or receive enable pins, so a replacement that adds control pins may require board changes even when the data rate and protocol match.
Slew-rate-limited outputs can reduce high-frequency energy, but they do not replace a complete EMC design. Keep the differential route compact, use the protection network recommended by the manufacturer, provide a low-impedance ground reference, and identify cable entry points. Where the transceiver connects to an external cable, evaluate surge, ESD, and common-mode transients with the actual protection components and enclosure installation method.
Informations de conformité
The verified distributor snippet explicitly reports RoHS non-compliant. No verified information was supplied for REACH, AEC-Q100 qualification, lead-free status, halogen-free status, or conflict-minerals compliance.
