ADM234LAN - 5V RS-232 Driver/Receiver | Analog Devices
部品番号: ADM234LAN ✓ 生産中ADM234LAN 概要
A line transceiver is an interface IC that converts logic-level signals into RS-232 voltage levels and converts received RS-232 signals back into CMOS-compatible logic. The ADM234LAN belongs to the line-driver and receiver hierarchy, within interface transceivers and communications interface ICs. Its integrated charge-pump and DC-DC circuitry allows a single-ended 5 V supply to generate the positive and negative voltage levels required by a conventional RS-232 port.
The four transmitters and four receivers make the ADM234LAN suitable for implementing a complete multi-channel RS-232 interface on one integrated circuit. Its 120 kB/s rated data rate supports legacy serial links, industrial equipment, data-acquisition systems, and control equipment that use EIA-232-E or V.28 signaling. The 9 V output swing provides the voltage amplitude needed by RS-232 while the receiver section handles signals arriving from a cable-connected remote device.
The device includes low-power shutdown control and receiver behavior designed to remain operational while the rest of the interface is shut down. That feature can simplify asynchronous serial designs in which one channel must monitor a remote link while the remaining transmitter and receiver functions are inactive. The receiver input also withstands 30 V, increasing tolerance to transients and voltage levels encountered on external RS-232 connections.
The ADM234LAN is supplied in a 16-pin PDIP package, making it appropriate for legacy through-hole boards, prototypes, and industrial control systems that use conventional DIP footprints. Designers should provide the required external capacitors, route the interface connector and cable ground appropriately, and verify every signal pin against the current manufacturer datasheet before production use.
For a new design, the ADM234LAN offers a practical way to add RS-232 capability from one 5 V rail without implementing an external switched-capacitor inverter. Its tradeoff is the relatively slow 120 kB/s data rate compared with USB, LVDS, or modern high-speed differential interfaces. The ADM234LAN is therefore most appropriate where protocol compatibility and legacy EIA-232-E or V.28 support matter more than throughput.
ドロップイン代替品: ADM234LAN — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
ADM234LANZ
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ADM234LAN 仕様
| Product Type | RS-232 line driver and receiver IC |
| Number of Drivers | 4 |
| Number of Receivers | 4 |
| 電源電圧 | 4.5 V to 5.5 V |
| Interface Standard | EIA-232-E and V.28 |
| Maximum Data Rate | 120 kB/s |
| Driver Output Swing | 9 V with 5 V supply |
| Receiver Input Voltage | 30 V |
| Receiver Shutdown Behavior | Receivers active in shutdown |
| Power Management Feature | Low-power shutdown |
| DC-DC Converter | On-board DC-DC converters |
| External Capacitor Value | 1 F |
| パッケージ | 16-pin PDIP |
| Package Pitch | 7.62 mm |
| 実装タイプ | Through-hole |
ADM234LAN 7.62 mm ピン配置ガイド
ADM234LAN (7.62 mm パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: ADM234LAN.
詳細は データシート をご参照ください。
主な用途
ADM234LAN の用途: 6 件s: Industrial Controller RS-232 Port, Data-Acquisition Instrument Interface, Legacy Computer Serial Adapter, Point-of-Sale Terminal Interface, Telecommunications Equipment Console, Embedded Equipment Service Port.
Industrial Controller RS-232 Port
The ADM234LAN fits industrial controller and service equipment that still requires a conventional RS-232 port. Its four driver and four receiver channels support multiple logic connections from one 16-pin PDIP device, while the 120 kB/s data rate matches EIA-232-E and V.28 legacy equipment. The verified 4.5 V to 5.5 V supply range allows operation from a regulated 5 V rail, and on-board DC-DC converters avoid a separate negative-voltage supply. Because the package is a through-hole PDIP rather than a fine-pitch surface-mount device, it is especially useful when maintaining an existing controller layout or assembling a prototype with a socket.
おすすめ
Data-Acquisition Instrument Interface
The ADM234LAN is appropriate for data-acquisition instruments that communicate with older host computers or laboratory controllers through RS-232. The four receivers can accept multiple control or measurement-status signals, while four drivers provide command and data channels at the device's verified 120 kB/s limit. Receiver inputs rated to 30 V improve tolerance of externally sourced levels on cable-connected equipment. The 9 V driver swing from a 5 V supply supplies the required RS-232 signal amplitude without an external ±12 V rail, while the PDIP package simplifies through-hole assembly and socket-based maintenance.
おすすめ
Legacy Computer Serial Adapter
The ADM234LAN can support a legacy computer serial adapter where an established board requires a 16-pin PDIP RS-232 interface. Four driver and receiver channels allow transmit, receive, hardware-flow-control, and status paths to be implemented around one IC. Its 120 kB/s maximum data rate is appropriate for classic serial equipment but intentionally does not target USB-to-RS-232 converter data rates. The single 5 V operating range simplifies adapter design, and the through-hole package allows direct replacement only after confirming the complete pinout and external capacitor network against the current datasheet.
おすすめ
Point-of-Sale Terminal Interface
The ADM234LAN is suitable for point-of-sale and retail equipment that retains an RS-232 connection to a printer, scanner, display, or customer-facing terminal. Multiple receiver channels can monitor equipment status and multiple driver channels can provide separate command paths, all using the same EIA-232-E and V.28-compatible interface. The 120 kB/s speed is sufficient for many legacy peripheral transactions, while the integrated DC-DC conversion reduces the external power-supply complexity associated with older ±12 V RS-232 designs. A legacy-system designer should verify cable lengths, grounding, and connector pin assignment before deployment.
おすすめ
Telecommunications Equipment Console
The ADM234LAN can provide console or service-port connectivity in telecommunications equipment that uses an RS-232 management interface. The receiver section can remain active during shutdown according to the verified feature summary, allowing selected monitoring paths to continue operating while unused functions are placed in a low-power state. Its 30 V receiver input capability is useful where the connected equipment may present elevated voltage levels. The 16-pin PDIP package is useful for legacy line-card and service-console boards, but new compact systems should account for the larger footprint compared with surface-mount RS-232 transceivers.
おすすめ
Embedded Equipment Service Port
The ADM234LAN is a practical choice for embedded equipment service ports that must retain compatibility with an RS-232 test fixture. Four drivers and four receivers support bidirectional service communication, handshake signals, and diagnostic outputs, while the single 5 V rail simplifies integration into an existing control board. The verified 120 kB/s rate covers conventional terminal protocols and equipment-repair workflows. Through-hole packaging also allows socketed assembly or straightforward replacement in field-serviceable equipment, although surge protection and proper signal-ground routing should be evaluated for long or exposed cables.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: ADM234LAN — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | ADM234LANZ |
|---|---|---|
| Package | 16-pin PDIP | 16-pin PDIP |
| Brand | Analog Devices | Analog Devices |
| Supply Voltage Range | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| Number of Drivers | 4 | 4 |
| Number of Receivers | 4 | 4 |
| Maximum Data Rate | 120 kB/s | 120 kB/s |
| Driver Output Swing | 9 V with 5 V supply | 9 V with 5 V supply |
| Receiver Input Voltage | 30 V | 30 V |
| Interface Standards | EIA-232-E and V.28 | EIA-232-E and V.28 |
| Shutdown Receiver Behavior | Receivers active in shutdown | Receivers active in shutdown |
主な差別化要因
- Single-supply RS-232 operation （vs ADM234LANZ)
- Four complete driver and receiver channels （vs ADM234LANZ)
- Shutdown monitoring capability （vs ADM234LANZ)
設計ノート
Mount the ADM234LAN on a through-hole board with adequate spacing around the 16-pin PDIP footprint. Route each RS-232 driver output directly toward its connector while keeping the four receiver inputs away from switching nodes and noisy digital traces. Use the verified 1 F external capacitor requirement as the basis for the charge-pump network, but confirm capacitor voltage rating, polarity, and placement against the current manufacturer datasheet before layout release.
Do not treat every RS-232 transceiver as a footprint-compatible substitute. The ADM234LAN uses a 16-pin PDIP arrangement, whereas several common alternatives use 20-pin or narrower SOIC packages. Verify the complete pinout, charge-pump capacitor values, shutdown polarity, and receiver output states before replacing the installed device. Also avoid applying a negative supply directly to this single-supply IC; its internal converters create the required bipolar signaling levels.
Place the external 1 F capacitors and associated charge-pump connections exactly as shown in the manufacturer application diagram, using the shortest practical paths and adequate copper area. RS-232 cable-side traces should be separated from sensitive analog or high-speed digital routes, and the connector's signal ground should connect to the circuit ground through the strategy appropriate for the system. Long exposed cables may require additional transient protection beyond the receiver's verified 30 V input capability.
コンプライアンス情報
The verified web results do not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements for ADM234LAN. These fields remain unknown rather than being inferred from the manufacturer or package family.