ADM208AN - 4/4 RS-232 Transceiver, 5V, 24-PDIP | Analog Devices
料号： ADM208AN ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.53 | $2.53 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
ADM208AN 概述
An RS-232 transceiver is an interface IC that combines differential line drivers and receivers for point-to-point serial communication. In the broader electronics hierarchy, it belongs to interface ICs and communications transceivers rather than power-management or logic devices. The ADM2xx family translates between low-voltage digital logic levels and the voltage levels used by RS-232 links, while internal charge-pump circuitry generates the required negative transceiver voltage.
Key features include four drivers, four receivers, 120 kbit/s operation from a single +5 V supply, and 9 V output swing. The receiver supports 30 V input levels according to the supplied manufacturer-related snippets. The device is intended for RS-232 links that must tolerate the electrical environment of the EIA-232-E or V.28 standards while avoiding external ±12 V rails. Low-power shutdown and receiver behavior vary by family member, so the exact ADM208AN functions must be verified against its datasheet during design-in.
The ADM208AN uses CMOS drivers and receivers to interface a host UART, microcomputer, or data-acquisition system with an RS-232 cable. Its 120 kbit/s rate is suitable for conventional serial equipment, configuration links, instrumentation, and industrial control links that do not require higher data rates. The 24-pin PDIP package favors through-hole assembly and legacy industrial equipment rather than compact surface-mount designs.
A primary design consideration is ensuring that the external charge-pump capacitors, supply decoupling, grounding, and cable-side protection meet the requirements in the manufacturer datasheet. Because RS-232 is a single-ended, unbalanced interface, cable routing and grounding can affect noise immunity. Do not infer an ESD rating, temperature range, or package dimensions that are not stated in the verified data.
This page consolidates verified manufacturer and distributor information, comparison-ready attributes, and practical RS-232 integration guidance. It distinguishes published facts from parameters requiring verification and is intended to support engineering selection before purchasing the ADM208AN.
直接替换替代料： ADM208AN ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ADM208AN （相同外形与封装尺寸） ——差异在于 Package, Product Type, Supply Voltage, Mounting Type, Data Rate.
快速对比工具——选择替代料号进行并排对比：
ADM208ANZ
✅ 直接替换📋 参考替代料（不在目录中）
MAX211IDB
✅ 直接替换✓ 有现货
$1.41 / 个
查看数据手册 →MAX211CWI+
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →MAX211CDB
✅ 直接替换✓ 有现货
$3.2251 / 个
查看数据手册 →MAX211CAI+
✅ 直接替换✓ 有现货
$5.3 / 个
查看数据手册 →ADM208AN 规格参数
| Product Type | RS-232 transceiver |
| Driver Count | 4 |
| Receiver Count | 4 |
| 电源电压 | +5 V |
| 数据速率 | 120 kbit/s |
| Charge-Pump Capacitor | 0.1 µF |
| Output Swing | 9 V with +5 V supply |
| Receiver Input Levels | 30 V |
| Low Power | 15 mW |
| Power Shutdown | Low-power shutdown feature listed for the ADM2xx family |
| Interface Standard | EIA-232-E and V.28 |
| 封装 | 24-pin PDIP |
| 安装类型 | Through-hole |
| Technology | CMOS |
ADM208AN 24-pin pdip 引脚配置指南
ADM208AN（24-pin pdip 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： ADM208AN.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ADM208AN 适用于 6 应用s: Legacy UART Serial Port, Industrial Control Console, Data Acquisition Instrument, Service and Diagnostics Interface, Embedded Communication Bridge, Legacy Peripheral Upgrade.
Legacy UART Serial Port
The ADM208AN fits a legacy UART-to-RS-232 interface in a +5 V equipment chassis. Its four drivers and four receivers provide multiple channels without requiring external ±12 V supplies, while the verified 120 kbit/s rate suits conventional serial control and data links. Place the transceiver between the host UART and an RS-232 connector, follow the manufacturer’s 0.1 µF charge-pump capacitor requirement, and provide local +5 V bypassing. The 24-pin PDIP package supports through-hole assembly and repair-friendly industrial boards, but the complete pinout, protection requirements, and temperature limits must be confirmed from the datasheet.
推荐
Industrial Control Console
The ADM208AN can connect a controller, service terminal, or diagnostic computer to industrial equipment using RS-232. The +5 V supply requirement is useful where a ±12 V rail is absent, and the four-channel architecture can reduce the number of separate interface devices when multiple ports are needed. Its 120 kbit/s capability is appropriate for configuration, status, and supervisory communications rather than high-bandwidth data. Designers should provide a stable reference ground, route the cable away from noisy power stages, and use connector protection appropriate to the installation; those system protections are not specified in the supplied excerpts.
推荐
Data Acquisition Instrument
The ADM208AN is suitable for a data-acquisition instrument that needs a simple host-control link over RS-232. Its four drivers and receivers allow the instrument to expose control commands and status signals while operating from a +5 V logic supply. The 120 kbit/s rate is sufficient for short configuration exchanges and low-rate measurement data, but the system must account for UART framing, cable length, grounding, and any required receiver tolerance. Use the verified 0.1 µF charge-pump capacitor and follow the manufacturer layout guidance for bypassing and signal routing.
推荐
Service and Diagnostics Interface
The ADM208AN can serve as a service interface in a controller or embedded test system where technicians connect a laptop or terminal through an RS-232 cable. The single +5 V supply simplifies service-board power compared with a discrete ±12 V driver arrangement, and the 24-pin PDIP package is convenient for through-hole prototypes and legacy equipment. The verified 120 kbit/s rate supports configuration logs and diagnostic commands. Production designs should verify ESD protection, operating temperature, and exact receiver thresholds because those values are not supplied and must not be inferred.
推荐
Embedded Communication Bridge
The ADM208AN can be used in a small communication bridge that translates a +5 V microcontroller UART into an RS-232 endpoint. The four-channel arrangement offers flexibility for multiple point-to-point ports, although each channel still requires correct driver-to-receiver routing. The 120 kbit/s specification is suitable for supervisory, configuration, and legacy peripheral links. The design must observe RS-232 single-ended signaling, provide a suitable ground reference, and separate noisy return currents from the transceiver. Verify all pin assignments and capacitor values against the official ADM208 datasheet before fabrication.
推荐
Legacy Peripheral Upgrade
The ADM208AN is a practical choice when modernizing a legacy peripheral that retains a through-hole RS-232 connector but lacks a convenient ±12 V supply. The CMOS implementation, four drivers, four receivers, and 120 kbit/s operation consolidate an RS-232 interface into one +5 V device. The PDIP package supports repair and production assembly using conventional through-hole processes. Because the supplied evidence does not confirm ESD ratings, temperature limits, or RoHS status, those requirements must be resolved against the exact manufacturer documentation and procurement specification before release.
推荐
推荐产品汇总
工程参考数据： ADM208AN ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ADM208ANZ | MAX211IDB | MAX211CWI+ | MAX211CDB | MAX211CAI+ |
|---|---|---|---|---|---|---|
| Package | 24-pin PDIP | 24-pin PDIP, exact suffix compatibility requires verification | 24-pin PDIP candidate | 24-pin PDIP candidate | 24-pin PDIP candidate | 24-pin PDIP candidate |
| Brand | Analog Devices | Analog Devices | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Interface Function | 4/4 RS-232 transceiver | ADM2xx RS-232 family; details require verification | RS-232 interface transceiver candidate | RS-232 interface transceiver candidate | RS-232 interface transceiver candidate | RS-232 interface transceiver candidate |
关键差异点
- Single +5 V RS-232 interface without external ±12 V rails （对比 MAX211IDB)
- Four-driver and four-receiver channel count （对比 MAX211CWI+)
- 9 V output swing from a +5 V supply （对比 MAX211CDB)
设计说明
Use a stable +5 V supply and place local bypass capacitance close to the ADM208AN supply pins. The verified family information identifies 0.1 µF charge-pump capacitors, so use the exact capacitor network and placement from the Analog Devices datasheet rather than estimating values from the family description. Confirm capacitor voltage rating, polarity, tolerance, and startup behavior against the final schematic before layout release.
Keep the charge-pump capacitors and supply bypass paths short, and route RS-232 driver and receiver traces away from switching nodes and high-current return paths. RS-232 is single-ended signaling, so ground reference quality matters as much as the data trace. Use a defined ground reference between connected equipment and test connector shield or signal ground according to the system’s EMC and grounding strategy.
Do not substitute a related MAX211 or ADM208 ordering suffix solely because the package appears similar. Verify every pin, supply requirement, driver/receiver enable state, charge-pump capacitor value, and receiver threshold against the exact manufacturer datasheet. The supplied sources do not establish a complete pinout, temperature range, ESD rating, or compliance declaration, so those items require engineering confirmation.
合规信息
The supplied excerpts do not establish RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Obtain the current compliance declaration from Analog Devices for the exact ordering code.