ISL8483IP - 5V RS-485/RS-422 Transceiver | Renesas
MPN： ISL8483IP ✗ 停產ISL8483IP 概覽
An RS-485/RS-422 transceiver is a balanced-interface interface IC used to connect a logic-level controller to a differential communication bus. RS-422 generally describes a point-to-point, balanced digital interface, while RS-485 supports multipoint bus arrangements and commonly uses transceivers that can disable their drivers when idle. The ISL8483IP belongs to the interface IC hierarchy and is intended for industrial-control, instrumentation, and embedded serial links requiring a 5 V supply and differential noise immunity.
The verified data identifies a maximum signaling rate of 250 kbps and offers two operating approaches described as high speed or slew-rate limited. These modes are relevant when a design must balance communication rate against the transition rate of the differential driver. Additional control features named in the source material are the receiver enable, transmitter enable, and low-power shutdown input, allowing the host to manage bus direction and conserve power when communication is inactive.
The ISL8483IP uses BiCMOS technology in the Intersil RS-485 and RS-422 product family. Although the provided search results describe the family as meeting both RS-485 and RS-422 standards, detailed limits for differential output voltage, receiver threshold, common-mode range, supply-current behavior, and isolation are not included in the supplied excerpts. Those parameters therefore require confirmation in the manufacturer datasheet before final circuit release.
Typical applications include industrial sensor and actuator links, factory automation equipment, building-control systems, laboratory instrumentation, and embedded controllers communicating with remote RS-485 peripherals. The 250 kbps rate is appropriate for moderate-speed control and monitoring networks rather than high-bandwidth data transfer. In a multidrop bus, only one transmitter should normally be active at a time, while the receiver can monitor bus state when its driver is disabled.
A key design consideration is the distinction between the PDIP and surface-mount ISL8483 package variants. Cross-reference results explicitly identify ISL8483EIBZ-T and ISL8483EIBZ-T7A as SOIC-8 surface-mount parts, so they are not drop-in replacements for an 8-PDIP board footprint. Before routing a replacement PCB, verify supply voltage, data rate, enable polarity, shutdown behavior, pinout, and transceiver-versus-receiver configuration against the manufacturer datasheet.
This page consolidates the verified distributor descriptions, package distinctions, sourcing links, and practical replacement constraints into an engineering-focused view. It also identifies where the supplied evidence is incomplete, avoiding unsupported claims about pin assignments, electrical limits, lifecycle state, pricing, and thermal performance. Those fields should be completed from the authoritative manufacturer datasheet and current authorized distribution records.
直接替換替代品，適用於 ISL8483IP — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此產品無可直接替換的替代品。
申請替代品ISL8483IP 規格
| Product Type | RS-485/RS-422 transceiver |
| Transmitter and Receiver Count | 1 transmitter and 1 receiver |
| Duplex Mode | Half duplex |
| Maximum Data Rate | 250 kbps |
| 供應電壓 | 5 V |
| Operating Mode | High speed or slew-rate limited |
| Receiver Enable | Yes |
| Transmitter Enable | Yes |
| Low-Power Shutdown | SHDN |
| Supported Interfaces | RS-485 and RS-422 |
| Technology | BiCMOS |
| 封裝 | 8-PDIP |
| Package Body Width | 0.300 inch (7.62 mm) |
| 安裝類型 | Through hole |
ISL8483IP 0.300 inch (7.62 mm) 腳位配置指南
ISL8483IP（0.300 inch (7.62 mm) 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： ISL8483IP.
請參閱 資料表 以查看完整腳位配置。
典型應用
ISL8483IP 適用於 6 應用s: Industrial Sensor and Actuator Networking, Factory Automation Equipment, Building and HVAC Control Systems, Laboratory Instrumentation, Embedded Controller Communication, Remote Monitoring and Telemetry.
Industrial Sensor and Actuator Networking
The ISL8483IP fits industrial sensor and actuator links that use a 5 V RS-485 bus at rates up to 250 kbps. Its half-duplex architecture lets a controller share one pair of bus conductors with multiple field devices while keeping only one driver active at a time. The separate receiver and transmitter enables support bus-direction control, while SHDN can remove the transceiver from the circuit when the equipment is inactive. The 8-PDIP package is useful for legacy or through-hole control boards, although the final design must verify the device's temperature rating, common-mode range, protection requirements, and bus termination strategy.
推薦
Factory Automation Equipment
The ISL8483IP is appropriate for moderate-speed factory automation links where a controller must communicate with remote drives, I/O blocks, or instrumentation over RS-485 or RS-422. Its 250 kbps limit is sufficient for command, status, and diagnostic traffic, while the slew-rate-limited operating option can help control edge rates on longer cables. Half-duplex operation requires correct driver-enable sequencing so multiple connected devices do not transmit simultaneously. The verified 8-PDIP package also makes the device suitable for industrial controller boards that retain through-hole component positions.
推薦
Building and HVAC Control Systems
The ISL8483IP can support distributed HVAC controllers, room sensors, damper actuators, and building-management modules that exchange low-bandwidth commands over a balanced bus. A 250 kbps RS-485 link provides ample capacity for set points, status flags, alarms, and periodic sensor readings. Separate Tx and Rx enables give the controller direct control over bus direction, and the shutdown function can reduce consumption during idle periods. Deployment in building equipment still requires checking the manufacturer's temperature and common-mode limits, grounding strategy, surge protection, and cable-routing requirements against the project specification.
推薦
Laboratory Instrumentation
The ISL8483IP is suitable for laboratory instruments that exchange commands and measurements with remote fixtures or computers through RS-422 or RS-485. The 5 V supply integrates naturally with conventional embedded-controller logic, and the 250 kbps rate is sufficient for slow control channels and periodic instrument data. In point-to-point RS-422 installations, the balanced interface provides a straightforward way to carry data over longer distances than a single-ended link. The circuit should use terminators appropriate to the physical layer and verify connector protection, isolation, grounding, and supported environmental conditions in the manufacturer documentation.
推薦
Embedded Controller Communication
The ISL8483IP can connect a microcontroller or programmable controller to an external RS-485 or RS-422 peripheral in a half-duplex topology. At 250 kbps, the link supports command traffic, registers, diagnostics, and sensor updates without approaching a high-speed serial interface's bandwidth. The receiver and transmitter enables should be driven so the bus driver is disabled while receiving, preventing contention with another node. SHDN provides another power-management option, but its exact active level and timing must be taken from the datasheet. The PDIP package suits through-hole prototype and legacy controller designs rather than compact new surface-mount assemblies.
推薦
Remote Monitoring and Telemetry
The ISL8483IP fits remote monitoring equipment that reports alarms, environmental readings, and equipment status over a low-speed balanced telemetry bus. The 250 kbps rate supports frequent periodic updates without demanding high-speed signal integrity or a large transceiver footprint. For installations with widely separated nodes, the choice between RS-485 multipoint wiring and RS-422 point-to-point wiring affects the number of drivers, termination strategy, and fault behavior. Designers should confirm the exact common-mode voltage range, receiver threshold, driver output limits, and operating temperature from the datasheet because those values were not present in the supplied excerpts.
推薦
推薦產品摘要
工程參考資料，適用於 ISL8483IP — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Package | 8-PDIP |
| Brand | Renesas Electronics |
| Product Type | RS-485/RS-422 transceiver |
| Transmitter/Receiver Count | 1 transmitter and 1 receiver |
| Duplex Mode | Half duplex |
| Maximum Data Rate | 250 kbps |
| Supply Voltage | 5 V |
| Control Functions | Rx enable, Tx enable, and low-power SHDN |
| Operating Modes | High speed or slew-rate limited |
| Mounting Type | Through hole |
主要差異化特點
- Through-hole package preserves the legacy board footprint (對比ISL8483EIBZ-T)
- Integrated half-duplex control and shutdown (對比ISL8483EIBZ-T7A)
- Moderate-speed balanced communications (對比ISL8483EIBZ-T7A)
設計說明
Route the balanced bus as a differential pair with continuous return geometry and keep the transceiver close to the connector. Place any protection devices near the external pins and provide a low-impedance ground reference. Do not treat the ISL8483EIBZ SOIC-8 variants as PCB-compatible replacements for the ISL8483IP 8-PDIP footprint; verify all eight assignments from the manufacturer pinout before connecting bus and enable signals.
In a half-duplex multidrop network, enable the transmitter only while the controller owns the bus and disable it during reception. Multiple nodes driving simultaneously can corrupt data and increase current. Termination must be designed for the selected RS-485 or RS-422 topology rather than copied blindly, and the final circuit should confirm receiver thresholds, driver output limits, enable polarity, and shutdown timing in the authoritative datasheet.
Decouple the 5 V supply close to the transceiver with capacitors selected from the manufacturer's recommended network, and account for both active and shutdown supply current when sizing the rail. The supplied excerpts identify a low-power SHDN function but do not provide its active level or leakage limits. Verify those details before using shutdown as a system-level power-saving mechanism, especially in battery-operated remote nodes.
合規資訊
The supplied verified excerpts do not contain environmental, substance, or automotive-qualification statements for the ISL8483IP. The aec_q100 field is left unknown rather than being classified as not_applicable because the evidence does not explicitly exclude automotive use.
