MC3488AP1 Dual EIA-423/EIA-232D Line Driver | onsemi
MPN： MC3488AP1 ✗ 停產MC3488AP1 概覽
The MC3488AP1 belongs to the interface IC hierarchy, which includes line drivers, line receivers, RS-232 transceivers, RS-422/RS-485 interface devices, and broader communication ICs. A line driver strengthens a digital signal before it travels through a cable, allowing the signal to retain useful amplitude and timing characteristics over the interconnect. The MC3488A is particularly relevant when an interface must satisfy legacy EIA-423 or EIA-232D signaling requirements rather than only modern logic-level communication.
The dual-channel arrangement allows one package to drive two independent communications lines, reducing component count and simplifying board layout compared with separate single-channel drivers. The DIP-8 package supports through-hole assembly and is useful in legacy industrial, telecommunications, instrumentation, and data-communication equipment where component availability, serviceability, and socketed assembly remain important. The manufacturer's MC3488A documentation identifies the device as a dual line driver with externally controlled wave-shaping and slew-rate behavior.
Typical applications include legacy data terminals, industrial control links, serial-interface adapters, telecommunications equipment, and embedded systems that need an RS-232D or EIA-423-compatible output stage. The driver should be used with the correct termination, biasing, protection, and cable-routing practices for the selected communication standard. The MC3488AP1 does not include a receiver in the same package, so a separate receiver or transceiver may be required for bidirectional links.
When designing a replacement board, verify the exact pinout, supply voltage, output levels, propagation delay, slew rate, and enable or shutdown behavior against the manufacturer datasheet. A nominally similar line-driver package is not automatically a drop-in replacement because EIA-423 and EIA-232D implementations can differ in reference-ground handling, output impedance, and timing. This page combines the manufacturer-aligned part identity, source links, and engineering guidance to support component selection and board-level validation.
直接替換替代品，適用於 MC3488AP1 — 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MC3488AP1 規格
| Product Type | Dual single-ended line driver |
| Driver Channel Count | 2 channels |
| Supported Standards | EIA-423, EIA-232D, CCITT X.26, CCITT X.28, Federal Standard FIDS1030 |
| 封裝 | 8-lead PDIP |
| 腳位數 | 8 pins |
| 安裝類型 | Through-hole DIP |
| Logic Output/Input Function | Line-driver output |
| Signal Type | Single-ended line driver |
| Data Direction | Transmit only |
MC3488AP1 8-lead pdip 腳位配置指南
MC3488AP1（8-lead pdip 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： MC3488AP1.
請參閱 資料表 以查看完整腳位配置。
典型應用
MC3488AP1 適用於 6 應用s: Legacy EIA-423 Data Terminal Interface, EIA-232D Industrial Control Link, Telecommunications Data Equipment, Legacy Serial Interface Adapter, Instrumentation and Test Equipment, Serviceable Legacy Communication Board.
Legacy EIA-423 Data Terminal Interface
The MC3488AP1 fits a legacy EIA-423 transmit path where two independent single-ended channels must meet the standard's signal-level and wave-shaping expectations. Place the appropriate driver network and external wave-shaping components at the board edge, then route the balanced or reference-grounded cable away from sensitive analog circuitry. The 8-lead PDIP format supports through-hole assembly and field replacement. Because the MC3488A is transmit-only, a separate receiver is required when the link must be bidirectional. Confirm supply voltage, output levels, timing, and termination values in the manufacturer datasheet before finalizing the circuit.
推薦
EIA-232D Industrial Control Link
The MC3488AP1 is useful for legacy industrial-control equipment that uses EIA-232D single-ended signaling and needs two driver outputs rather than a complete transceiver. The dual channel arrangement can reduce the number of line-driver packages, while the PDIP construction simplifies through-hole maintenance. The designer should retain the standard's grounding and protection arrangements and validate cable length, noise immunity, and timing at the system level. Do not substitute a low-voltage CMOS interface unless its output levels and rise-time behavior have been checked against the legacy port requirements.
推薦
Telecommunications Data Equipment
MC3488AP1 can support transmit-side interfaces in legacy telecommunications equipment designed around EIA-423, EIA-232D, CCITT X.26, or X.28 signaling. Its two-driver configuration is useful when one board must drive two point-to-point data channels, while external wave-shaping components can tailor transition behavior. The through-hole package is practical for serviceable or socket-oriented designs. Verify signal polarity, reference-ground behavior, output impedance, and timing against the equipment's original interface specification before replacing the device or designing new boards.
推薦
Legacy Serial Interface Adapter
The MC3488AP1 is appropriate in a legacy serial adapter that converts logic-level transmit signals into EIA-423 or EIA-232D line waveforms. It can be paired with a receiver IC to create a two-way port, provided grounding, termination, protection, and supply requirements are designed together. The PDIP package also helps when maintaining older boards with through-hole assembly. When upgrading to a modern design, compare power consumption, data rate, ESD protection, and package size against current interface ICs; the MC3488AP1 prioritizes legacy signaling and serviceability.
推薦
Instrumentation and Test Equipment
MC3488AP1 can be used in legacy instrumentation or test equipment that transmits control or measurement-related data over EIA-423 or EIA-232D-compatible lines. Two driver channels can reduce component count in systems with parallel command paths. Keep the driver close to the connector and use controlled return paths to reduce noise coupling into measurement circuits. Confirm the output waveform with the specified line-load and cable arrangement, because logical compatibility of a communication label alone does not guarantee timing or signal-level compatibility.
推薦
Serviceable Legacy Communication Board
The MC3488AP1 is a practical choice for repairing or extending a legacy communication board that uses an 8-lead PDIP line-driver footprint. The through-hole format allows replacement without introducing a fine-pitch SMD assembly process, and the dual channel can serve paired transmit functions. Before ordering, compare the complete pin description table, power rails, output levels, external resistor connections, and timing specifications with the failed device. Because no fully validated drop-in alternatives were established, the original MC3488AP1 designation should be confirmed whenever possible.
推薦
推薦產品摘要
工程參考資料，適用於 MC3488AP1 — 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-lead PDIP |
| Brand | onsemi |
| Driver Configuration | Dual single-ended line driver |
| Channel Count | 2 channels |
| Supported Standards | EIA-423, EIA-232D, CCITT X.26, X.28, FIDS1030 |
| Data Direction | Transmit only |
| Mounting Type | Through-hole |
| Wave-Shaping Function | Supported; external control details require datasheet confirmation |
主要差異化特點
- Dual single-ended line-driver channels in one package (對比MC3487NSR)
- Legacy communications-standard coverage (對比MAX211IDWR)
- Serviceable through-hole construction (對比MC3486NSR)
設計說明
Place the MC3488AP1 close to the connector or cable-side interface and keep each driver return path short and continuous. Route the two transmit channels away from sensitive analog inputs and clocks. Because this is a legacy line interface, maintain the reference-ground arrangement required by the selected EIA or CCITT standard rather than treating the driver ground as an unrestricted digital return.
Do not assume that any 8-pin dual line driver is a direct replacement. Compare the complete pin description, supply voltage, output levels, propagation delay, slew rate, external wave-shaping resistor connections, and disable behavior with the MC3488A datasheet. A difference in ground or enable pin assignment can cause a board to transmit incorrectly even when the connector and package appear compatible.
Validate the transmitted waveform with the intended cable, termination, and grounding configuration. Check rise and fall times, logic threshold, noise margin, and reflections at the connector rather than relying only on a nominal communication-standard label. The MC3488A includes wave-shaping provisions, but the external component values and their permitted adjustment range must be taken from the manufacturer documentation.
For a repair or legacy-board spin, preserve the through-hole footprint and confirm pin 1 orientation, lead spacing, and row spacing against the physical device. Add the connector-side protection network required by the original design, including any surge, ESD, or clamp components. Review the unused driver channel and disable pins against the datasheet before leaving them unconnected.
合規資訊
The available part information identifies the standards and package but does not establish the requested environmental or material-compliance declarations.
