ADM207ARZ - 5/3 RS-232 Transceiver, 200 kbps | Analog Devices
N.º de pieza: ADM207ARZ ✓ ActivoADM207ARZ Descripción general
An RS-232 transceiver is an interface IC that converts logic-level digital signals into RS-232 line levels and converts received line levels back into digital logic. This device belongs to the line-driver and receiver category, which forms part of the broader interface IC and semiconductor hierarchy. Unlike a standalone RS-232 driver or receiver, the ADM207ARZ combines both functions and its regulated charge-pump circuitry on one integrated circuit.
The ADM207ARZ provides five transmit channels and three receive channels, allowing three bidirectional ports plus two transmit-only outputs. Its maximum signaling rate of 200 kbps supports common asynchronous serial data links while requiring only a 0.1 µF external capacitor for its on-chip voltage converters. The 5 V supply architecture simplifies system design because designers do not need a separate ±12 V source.
Technically, the integrated DC-to-DC converters generate positive and negative RS-232 voltage levels from the single low-voltage supply. The receivers provide noise immunity for the ±3 V logic used by many microcontrollers and programmable controllers. Although the ADM207 lacks the low-power shutdown feature associated with some related ADM2xx devices, it remains suitable for multiport industrial, instrumentation, test-equipment, and embedded-control interfaces where several RS-232 channels are required.
Typical applications include data acquisition systems, industrial controllers, laboratory instruments, point-of-sale equipment, barcode scanners, and embedded serial-port interfaces. A system designer can connect its logic-side transmitter inputs and receiver outputs directly to a suitable microcontroller UART, while the RS-232-side pins connect through the external charge-pump capacitors and protection network. The wide SOIC package is easy to assemble and available in production packaging.
When laying out the board, place the 0.1 µF charge-pump capacitors close to their specified pins and route the high-voltage RS-232 outputs away from sensitive logic. Decoupling and external protection must follow the manufacturer application guidance because long cables expose the interface to electrostatic discharge and surge events. The supply must remain within the verified 4.5 V to 5.5 V range.
This page consolidates verified manufacturer and distributor information, package-specific sourcing details, application guidance, and a transparent assessment of available drop-in alternatives. It also separates documented capabilities from unavailable electrical details instead of estimating missing specifications.
Alternativas directas para ADM207ARZ — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ADM207ARZ (mismo factor de forma y huella) — difiere en Output Swing, Package, Supply Voltage.
MAX207IDWR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ADM207ARZ Especificaciones
| Product Type | RS-232 transceiver |
| Number of Drivers | 5 |
| Number of Receivers | 3 |
| Tensión de alimentación | 4.5 V to 5.5 V |
| Nominal Supply Voltage | 5 V |
| Maximum Data Rate | 200 kbps |
| Charge-Pump Capacitor | 0.1 µF |
| Protocol | RS-232 |
| Compliance Interface | EIA-232-E and V.28 |
| Onboard Voltage Converter | Yes, DC-to-DC converter |
| Output Swing | ±9 V |
| Encapsulado | 24-pin SOIC W |
| Tipo de montaje | Surface Mount |
| Packaging | Tube |
| Número de pines | 24 |
Guía de configuración de pines de ADM207ARZ 24-pin soic w
Configuración de pines para ADM207ARZ (encapsulado 24-pin soic w). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para ADM207ARZ.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
ADM207ARZ es adecuado para 6 aplicacións: Industrial Data Acquisition, Embedded Serial Port Expansion, Laboratory Test Instrumentation, Point-of-Sale and Retail Equipment, Barcode and Identification Systems, Instrumentation and Process Monitoring.
Industrial Data Acquisition
The ADM207ARZ fits industrial acquisition systems that must connect several RS-232 instruments to one controller. Its five drivers and three receivers support three bidirectional ports plus two transmit-only channels, while the single 4.5 V to 5.5 V supply avoids a separate ±12 V rail. The 200 kbps rate is appropriate for many legacy instruments, although each RS-232 port requires isolation from the others according to the system specification. Designers should place the specified 0.1 µF charge-pump capacitors close to the device and verify the exact pin functions in the manufacturer datasheet before laying out the board.
Recomendado
Embedded Serial Port Expansion
The ADM207ARZ is useful when an embedded controller lacks enough UART channels for attached RS-232 equipment. Five drivers and three receivers can consolidate multiple serial connections without requiring a separate voltage-conversion IC for every port. Because the transceiver operates from 4.5 V to 5.5 V, it can share a 5 V rail with many embedded systems, while its onboard converters provide the required RS-232 levels. The design trade-off is that software must manage the shared channel direction, and the 200 kbps rating should be checked against every connected peripheral’s timing requirements.
Recomendado
Laboratory Test Instrumentation
The ADM207ARZ can connect a laboratory instrument to legacy RS-232 controllers, printers, or service interfaces. Three receive channels allow the instrument to accept commands or status from up to three compatible devices, while five transmit channels support outbound control and data paths. Its single 5 V architecture simplifies portable and benchtop power arrangements compared with a discrete ±12 V interface. A 200 kbps maximum rate is sufficient for many measurement-control protocols, but engineers should verify cable length, grounding, and whether the selected device requires hardware handshaking.
Recomendado
Point-of-Sale and Retail Equipment
Retail terminals can use ADM207ARZ to connect receipt printers, scanners, scales, and service equipment through RS-232. The five-driver and three-receiver arrangement accommodates several peripheral classes without using one full transceiver per connection. Since the device needs only a 4.5 V to 5.5 V supply and 0.1 µF charge-pump capacitors, it fits compact point-of-sale controller boards. The main design constraints are cable transients and ground potential differences: external protection and careful return-path routing remain important even though the IC generates the required RS-232 voltage levels.
Recomendado
Barcode and Identification Systems
ADM207ARZ can serve as the interface between an identification terminal and barcode scanners, magnetic readers, or label printers that use RS-232. Three receiver channels permit several input devices to report data to the terminal, and five driver channels provide command and response paths. The 200 kbps maximum rate is generally well above the throughput needed for ordinary barcode characters, making the interface practical for bursty transactions. Engineers should confirm the scanner’s logic levels and handshaking requirements, then provide suitable protection at externally accessible connectors.
Recomendado
Instrumentation and Process Monitoring
The ADM207ARZ is suitable for process-monitoring equipment that collects readings from older RS-232 sensors, controllers, or analyzers. The multi-driver and multi-receiver configuration supports centralized monitoring while keeping the host system powered from 5 V. Its onboard charge-pump converters eliminate the need for a separate ±12 V supply, and the EIA-232-E and V.28 interface target supports legacy compatibility. For industrial deployment, verify the exact temperature grade and isolation strategy, add connector-level surge protection, and route RS-232 outputs away from sensitive analog and measurement circuitry.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ADM207ARZ — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MAX207IDWR |
|---|---|---|
| Brand | Analog Devices | Maxim Integrated |
| Package | 24-SOIC W | 24-SOIC |
| Device Type | Full RS-232 transceiver | 5/3 RS-232 transceiver |
| Number of Drivers | 5 | 5 |
| Number of Receivers | 3 | 3 |
| Onboard Voltage Conversion | Yes | Yes |
Diferenciadores clave
- Five-driver and three-receiver integration (frente a MAX202IDR)
- Documented 200 kbps maximum data rate (frente a MAX207IDWR)
- Single 5 V supply with integrated conversion (frente a MAX207IDWR)
Notas de diseño
Place the specified 0.1 µF charge-pump capacitors close to the ADM207ARZ pins and use the shortest practical traces permitted by the manufacturer layout guidance. These capacitors are part of the internal voltage-conversion circuit, so long or highly inductive traces can impair switching behavior. Keep the RS-232 driver outputs away from UART clock, reset, and sensitive analog traces, and provide a continuous ground reference beneath the interface area.
Do not assume that the 4.5 V to 5.5 V logic-side supply can also be used as an RS-232 line input. The ADM207ARZ receivers require proper RS-232 voltage levels and polarity, while the driver outputs generate bipolar levels through the onboard converters. Check every connector signal for TX-to-RX mapping, ground continuity, and the need for hardware handshaking before connecting external equipment.
Treat the externally accessible RS-232 connector as an industrial noise entry point. Use the protection network recommended by the manufacturer datasheet, provide a short return path for cable surge current, and avoid long unprotected traces beyond the board boundary. Separating high-swing driver outputs from precision measurement or clock circuitry reduces capacitive coupling and improves system reliability.
Información de cumplimiento
The supplied verified snippets do not explicitly state the target part's RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. No compliance status was inferred from generic distributor listings.
