MC1488DG - Quad EIA-232D Driver | onsemi | RS-232 Interface
Артикул: MC1488DG ✗ Снят с производстваMC1488DG Обзор
An EIA-232D line driver is a type of interface transceiver component that converts logic-level signals into RS-232 voltage levels for transmission between data terminal equipment and data communications equipment. In the broader hierarchy, MC1488DG belongs to the interface IC category, specifically the RS-232 driver family. Its quad-channel architecture reduces the component count in systems requiring several serial data outputs while preserving the signal and power connection conventions established for EIA-232D equipment.
The principal features of MC1488DG include four independent driver outputs, integrated output current limiting, and a typical output current capability of ±10 mA. The driver is designed for conformance with EIA-232D interface requirements, and its monolithic construction places the driver functions in one 14-pin SOIC package. The design supports equipment requiring multiple RS-232 transmit channels, including computer peripherals, industrial data links, test equipment, and legacy communications equipment.
Technically, the MC1488 belongs to the family of bipolar RS-232 line drivers that use positive and negative supply rails to develop the bipolar voltage levels required by the interface standard. The MC1488 data also identifies SN55188 and SN75188 as related monolithic quadruple line drivers. Because MC1488DG is a driver-only device, engineers should check signal levels, supply requirements, output polarity, and protection needs against the original system interface before using it in a redesigned board.
Typical applications include industrial serial-port controllers, laboratory instrumentation, point-of-sale terminals, data acquisition equipment, and embedded systems that retain an RS-232 output interface. In a multi-channel design, each logic input can drive a corresponding RS-232 output, while a separate receiver IC handles incoming signals. This separation is important because the MC1488 provides four transmit channels but no integrated receive channels.
A key design consideration is to preserve the original board footprint and verify every pin assignment before substitution. The 14-pin SOIC package is suitable for conventional surface-mount assembly, but RS-232 cables connect to externally exposed connector pins rather than directly to the IC. External protection, grounding, connector geometry, and cable-routing decisions remain necessary to achieve reliable system-level communications.
This page combines the verified manufacturer and distributor references for MC1488DG with package information, interface intent, sourcing links, and identified pin-compatible alternatives. It also distinguishes the driver-only MC1488DG from complete RS-232 transceiver functions, helping engineers select the correct replacement without confusing interface direction or package compatibility.
Аналоги без доработки для MC1488DG — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
MC1488DR2G
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SN75188D
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
DS14C88M/NOPB
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MC1488DG Характеристики
| Product Type | Quad EIA-232D line driver |
| Number of Drivers | 4 channels |
| Number of Receivers | 0 channels |
| Interface Standard | EIA-232D |
| Typical Output Current | ±10 mA per channel |
| Output Current Limiting | Integrated current-limited outputs |
| Корпус | 14-pin SOIC |
| Тип монтажа | Surface mount |
| Lead Configuration | Gull-wing leads |
| Shipping Package | Tube, 55 units |
Руководство по цоколевке MC1488DG в корпусе tube, 55 units
Цоколевка для MC1488DG (корпус tube, 55 units). Нумерация выводов, функции и схемы подключения определены в техническом описании производителя. Обратитесь к нему для точного посадочного места и рекомендаций по пайке.
Нет подробных данных о распиновке для MC1488DG.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
MC1488DG подходит для 6 применениеs: Industrial RS-232 Data Acquisition, Legacy Computer Serial Port Interface, Laboratory Serial Instrumentation, Point-of-Sale Terminal Interface, Data Terminal Equipment Interface, Embedded RS-232 Output Module.
Industrial RS-232 Data Acquisition
The MC1488DG fits a four-channel industrial data-acquisition transmitter because it provides four independent EIA-232D driver outputs in one 14-pin SOIC. According to the verified datasheet information, each channel has a typical output capability of ±10 mA and integrated current limiting. Place the device between the controller's logic-level outputs and protected RS-232 connector circuitry, then add a separate receiver for returned data. The driver-only architecture reduces component count without mixing transmit and receive functions. Before deployment, verify the board's supply rails, data-signaling rate, isolation strategy, and connector protection against the complete manufacturer specifications.
Рекомендуется
Legacy Computer Serial Port Interface
MC1488DG is appropriate for legacy computer and peripheral systems that require multiple RS-232 transmit channels but retain separate receive circuitry. Its four-driver arrangement maps directly to four logic-level UART outputs, while its 14-pin SOIC package supports conventional surface-mount PCB assembly. The verified source describes the device as a monolithic quad line driver for data terminal equipment. Because it has zero receiver channels, bidirectional ports need a dedicated quad receiver. A replacement board should also preserve the original logic polarity and connector wiring because package compatibility alone does not guarantee identical system-level behavior.
Рекомендуется
Laboratory Serial Instrumentation
The MC1488DG can provide four RS-232 drive channels for laboratory instruments that expose multiple serial command or measurement ports. Its EIA-232D conformance and typical ±10 mA per-channel output current align with the verified description of a monolithic quad line driver, allowing a compact implementation in a 14-pin SOIC. The device handles only the transmit direction, so the instrument must use a separate receiver for commands or responses received from the host. Practical implementation still requires ESD-rated connector protection, careful signal-ground connections, and validation of the complete datasheet's timing and load characteristics before laboratory release.
Рекомендуется
Point-of-Sale Terminal Interface
MC1488DG is useful in point-of-sale terminals requiring several conventional RS-232 outputs for peripherals such as printers, scanners, or customer displays. Four integrated EIA-232D drivers reduce the number of discrete interface packages and provide a consistent route from controller logic to protected connector pins. The verified manufacturer-linked data reports a typical output current of ±10 mA and integrated current limiting, making the part relevant to cable-driver interfaces. The MC1488DG cannot receive RS-232 signals, so return channels need a separate receiver. Production engineers must also verify idle-state behavior, wiring, and transient protection for each external cable.
Рекомендуется
Data Terminal Equipment Interface
MC1488DG directly targets the data terminal equipment side of EIA-232D communications, providing four monolithic line-driver channels for multiport interface designs. Its verified 14-SOIC construction and quad architecture match common board layouts that use one driver package per four transmit signals. Using the MC1488DG preserves the established EIA-232D interface concept while limiting the number of required ICs. However, it should be combined with a separate receive device, and the exact logic polarity and output-voltage conditions must be checked on the original schematic. Connector protection remains external to the IC and should be selected for the actual cable environment.
Рекомендуется
Embedded RS-232 Output Module
The MC1488DG can serve as the output section of an embedded RS-232 module built around a microcontroller or programmable logic device. Four logic signals can feed four driver channels, allowing the module to retain older equipment interfaces without implementing discrete transistor stages. The 14-pin SOIC package supports dense surface-mount assemblies, while integrated output current limiting adds a protection feature described in the verified MC1488 data. The module must still include a separate receiver, logic-level translation where required, and ESD protection at exposed connectors. Before adapting an existing design, engineers should confirm operating temperature, supply voltage, and timing because those values are not present in the supplied verified extract.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для MC1488DG — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | MC1488DR2G | SN75188D | DS14C88M/NOPB |
|---|---|---|---|---|
| Brand | onsemi | onsemi | Texas Instruments | Texas Instruments |
| Package | 14-pin SOIC | 14-pin SOIC | 14-pin SOIC | 14-pin SOIC |
| Device Function | Quad EIA-232D line driver | Quad line driver | Quad line driver | Quad line driver |
| Driver Channels | 4 | 4 | 4 | 4 |
| Receiver Channels | 0 | 0 | 0 | 0 |
| Interface Standard | EIA-232D | EIA-232D | EIA-232D | RS-232 |
| Pin Compatibility | MC1488DG reference | Complete replacement; terminals and package consistent | Complete replacement; terminals and package consistent | Pin-for-pin compatible |
Ключевые отличия
- Native onsemi continuity (против SN75188D)
- Verified complete replacement (против MC1488DR2G)
- Verified pin-for-pin cross-brand option (против DS14C88M/NOPB)
Заметки по проектированию
Do not treat MC1488DG as a complete RS-232 transceiver. The verified device description identifies four driver outputs and no receiver channels, so a bidirectional interface requires a separate quad receiver. Before fitting a replacement, compare the original schematic's input logic polarity, driver output levels, supply connections, and ground arrangement. Package compatibility alone does not prove that an alternative will behave identically in the surrounding circuit.
Keep the MC1488DG close to the interface logic and place any connector-side protection network between the IC outputs and external RS-232 connector. Route the four driver channels away from sensitive analog or high-speed digital traces where practical. The IC itself does not provide the complete external protection scheme, so ESD, surge, and cable-fault requirements should be handled with appropriately rated components selected for the actual interface environment.
A 14-pin SOIC footprint match is necessary but not sufficient for a drop-in replacement. Confirm the complete manufacturer pin table, supply-voltage requirement, output-current limit, propagation delay, and operating-temperature grade for MC1488DG and the proposed alternative. The supplied verified extract does not include these electrical details or a complete pinout, so do not authorize rework based only on the cross-reference result.
Информация о соответствии
The verified web results do not explicitly provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations for MC1488DG. No compliance status has been inferred.