ADM207ARS - 5V RS-232 Transceiver IC | Analog Devices
料号： ADM207ARS ✓ 量产中ADM207ARS 概述
An RS-232 transceiver is an interface IC that combines digital line drivers and receivers on a single integrated circuit. Drivers convert logic-level signals into RS-232-compatible voltage levels, while receivers convert bipolar serial signals back into digital logic levels. The ADM2xx family therefore sits between a host controller or data-processing system and an RS-232 port. Its single +5 V supply operation simplifies system power design while retaining compatibility with established RS-232 equipment.
Key features include operation from a +5 V supply, support for 0.1 µF charge-pump capacitors, a 120 kbit/s data rate, nine-volt output swing, and two active receivers for data-bus applications. The device also features low-power operation and a low-power shutdown function. Its CMOS implementation is intended to reduce power consumption compared with older bipolar RS-232 interface families.
The ADM207ARS combines five transmit channels with three receive channels, making it useful for RS-232 designs that require more driver outputs than receiver inputs. This arrangement can support multi-drop or multi-peripheral arrangements in which one controller connects to several peripherals, provided the system designer observes the applicable RS-232 topology and drive-load constraints. The 120 kbit/s maximum data rate supports moderate-speed serial links rather than high-speed differential communications.
Typical uses include industrial equipment interfaces, instrumentation links, service-console ports, embedded control systems, and legacy peripheral connectivity. A single +5 V rail simplifies portable and compact industrial designs, while the SSOP package supports surface-mount assembly. The on-board charge-pump circuitry generates the positive and negative voltage levels needed by the drivers, subject to correct external capacitor placement and the voltage limits specified by the manufacturer.
For a new layout, place the charge-pump capacitors and receiver bypass capacitor close to their associated pins, route RS-232 traces away from sensitive analog and high-speed digital nodes, and observe the supply and ground-return requirements of the interface. Confirm signal polarity, driver direction, and connector pin assignments for each peripheral before finalizing the PCB because RS-232 implementations can differ even when both endpoints use standard transceivers.
直接替换替代料： ADM207ARS ——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： ADM207ARS （相同外形与封装尺寸） ——差异在于 Package, Product Type.
ADM206ARS
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →ADM205ARS
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADM211ARS
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADM213ARS
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADM203ARS
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADM207ARS 规格参数
| Product Type | RS-232 line-driver and receiver transceiver |
| 电源电压 | +5 V |
| Driver Count | 5 |
| Receiver Count | 3 |
| Maximum Data Rate | 120 kbit/s |
| Charge-Pump Capacitor Value | 0.1 µF |
| Driver Output Swing | 9 V |
| Receiver Input Voltage | 30 V maximum |
| Low-Power Dissipation | 15 mW |
| Interface Standard | EIA-232-E and V.28 |
| 封装 | 24-lead SSOP |
| 安装类型 | Surface mount |
| Shutdown Function | Low-power shutdown |
| Active Receivers in Shutdown | 2 receivers |
| Latch-Up Protection | Latch-up free |
ADM207ARS 24-lead ssop 引脚配置指南
ADM207ARS（24-lead ssop 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： ADM207ARS.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ADM207ARS 适用于 6 应用s: Industrial Instrument Serial Port, Embedded Controller Communication, Test and Measurement Equipment, Service and Diagnostic Console, Legacy Peripheral Connectivity, Portable Data Acquisition Unit.
Industrial Instrument Serial Port
The ADM207ARS fits an industrial instrument that must expose an RS-232 service or control port from a +5 V logic board. Its five drivers and three receivers provide more transmit paths than receive paths, which is useful when one controller connects to several peripherals. The 120 kbit/s rate accommodates configuration commands and moderate diagnostic data transfers. The manufacturer-specified 0.1 µF charge-pump capacitors should be placed close to the relevant pins, while the 24-lead SSOP footprint keeps the interface compact. Confirm direction-control levels and connector pin assignments against the selected system architecture.
推荐
Embedded Controller Communication
The ADM207ARS can connect a low-voltage embedded controller to an RS-232 peripheral without requiring external ±12 V rails. Operating from +5 V simplifies the power architecture, while the internal charge-pump circuit develops the bipolar levels used by the drivers. With a maximum data rate of 120 kbit/s, the interface is appropriate for command protocols, boot messages, and configuration transfers rather than continuous high-bandwidth data. Designers should preserve the specified 0.1 µF capacitor values and route the RS-232 nets away from sensitive clock and analog nodes to limit coupling into the controller.
推荐
Test and Measurement Equipment
ADM207ARS is appropriate for test and measurement equipment that must communicate with legacy RS-232 instruments through a compact +5 V interface. The five-driver arrangement can support connections to multiple controlled devices, while three receiver inputs support status and response channels. Its 120 kbit/s rate is more than sufficient for typical command-response instruments such as programmable sources, analyzers, and automated test fixtures. Keep the transceiver at the connector side of the board, provide a stable reference or chassis-ground strategy appropriate to the installation, and keep the serial traces away from high-voltage and high-slew-area circuitry to improve signal integrity.
推荐
Service and Diagnostic Console
The ADM207ARS can serve a service console or diagnostic controller that exchanges commands and status information with field equipment. Its +5 V operation removes the need for a separate bipolar RS-232 supply, and the five transmitters allow a controller to address several downstream devices. The three receivers can collect independent response or fault signals. Because service ports often connect outside the enclosure, the design should include appropriate protection, grounding, and cable transient considerations. The device itself is specified with 30 V receiver input levels and nine-volt output swing, but connector protection and system-level isolation may still be required.
推荐
Legacy Peripheral Connectivity
The ADM207ARS supports equipment that must retain compatibility with established RS-232 peripherals while using a modern +5 V controller. The interface standard is suited to EIA-232-E and V.28 links, and the internal charge-pump circuit supplies the required bipolar drive levels. The device's 5/3 channel arrangement is useful when several peripherals transmit commands toward one controller, although it cannot provide three transmit and five receive paths in the same package. Maintain consistent logic polarity across the board and verify whether the system requires local echo, remote echo, or no echo behavior before assigning the receive channels.
推荐
Portable Data Acquisition Unit
The ADM207ARS can be used in a portable acquisition unit that collects or configures data through an RS-232 link. Its single +5 V supply requirement fits compact systems better than a discrete ±12 V interface implementation. The 120 kbit/s rate supports sampled configuration records, status updates, and moderate data transfers, although a higher-throughput link may be preferable for continuous high-rate acquisition. Layout should minimize the charge-pump loop and protect the receiver paths from cable transients. The nine-volt driver swing and 30 V receiver input rating provide useful interface margin, subject to the complete electrical limits in the manufacturer datasheet.
推荐
推荐产品汇总
工程参考数据： ADM207ARS ——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 | ADM206ARS | ADM205ARS | ADM211ARS | ADM213ARS | ADM203ARS |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 24-lead SSOP | 24-lead SSOP | 24-lead SSOP | 24-lead SSOP | 24-lead SSOP | 24-lead SSOP |
| Supply Voltage | +5 V | +5 V | +5 V | +5 V | +5 V | +5 V |
关键差异点
- Five-driver channel count （对比 ADM203ARS)
- Three-receiver channel count （对比 ADM203ARS)
- Moderate-speed single-supply operation （对比 ADM205ARS)
- More transmit resources than receive resources （对比 ADM213ARS)
设计说明
Place the manufacturer-specified 0.1 µF charge-pump capacitors immediately adjacent to their designated pins. Keep the high-current switched-capacitor loop compact and connect its return path directly to the device ground reference. This minimizes radiated and conducted coupling into adjacent logic or analog circuitry. Follow the manufacturer reference layout for capacitor orientation and trace spacing rather than treating the capacitors as general-purpose bypass components.
Route RS-232 driver outputs and receiver inputs as a dedicated interface group, keeping them away from switching nodes, crystal oscillator circuits, and sensitive analog inputs. The maximum 120 kbit/s rate is relatively moderate, but fast charge-pump edges can couple even when the data signal itself is slow. Maintain a continuous ground reference, use an appropriate connector-side return path, and avoid splitting or narrowing the ground plane beneath the transceiver.
Do not substitute a family member solely because it uses the same 24-lead SSOP outline. Confirm driver and receiver counts, enable and direction pins, shutdown truth tables, charge-pump capacitor values, and pin names against the manufacturer datasheet. An RS-232 connector also does not automatically define logic polarity or echo behavior. Verify each channel's origin, termination, and signal direction at both endpoints before releasing the PCB for production.
合规信息
No explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations were identified for ADM207ARS. Use the current Analog Devices product documentation or declaration for regulatory qualification.
