ADM209AR - 120kbps +5V RS-232 Transceiver | Analog Devices
N.º de pieza: ADM209AR ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.0185 | $2,02 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
ADM209AR Descripción general
An RS-232 transceiver is an interface integrated circuit that combines differential line drivers and receivers with charge-pump circuitry to generate the positive and negative voltage swings required by the RS-232 standard. It belongs to the broader class of interface ICs, connecting a host, peripheral, instrument, or industrial controller to a physical communication port. The ADM209AR is therefore positioned between low-voltage digital logic and an external RS-232 cable.
Key features include operation from a +5 V supply, support for 120 kbps data rates, use of only 0.1 µF capacitors, 9 V output swing with a +5 V supply, low power consumption of 15 mW, and active receiver behavior during shutdown for the ADM213 family context identified in the retrieved data. The device also includes latch-up protection and is described as a plug-in upgrade for MAX205, MAX211, and MAX213 devices.
The ADM209AR uses charge-pump-generated rails to provide RS-232-compatible output levels from a single positive supply. This architecture simplifies external power design compared with a dual-supply implementation, while the 30 V receiver input rating helps the interface withstand harsher cable-side transients. The 24-SOIC package provides a conventional surface-mount footprint and room for the required external capacitors.
Typical applications include RS-232 ports in industrial equipment, test and measurement instruments, computer peripherals, embedded systems, and communications equipment. The 120 kbps rate is suitable for legacy serial links that require higher throughput than slow modem-style interfaces but do not demand modern high-speed differential signaling.
When laying out the ADM209AR, place the charge-pump capacitors and RS-232 line-side protection or termination components close to the IC and connector. Verify that the external capacitor polarity, supply decoupling, cable length, and logic levels satisfy the system requirements. Do not substitute a receiver-only or driver-only IC unless the surrounding circuit is redesigned.
This product data synthesizes the retrieved manufacturer and distributor information, available pricing, package details, application guidance, and replacement constraints into an engineering-oriented component reference.
Alternativas directas para ADM209AR — 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 ADM209AR (mismo factor de forma y huella) — difiere en Package, Product Type, Data Rate, Driver Output Swing, Supply Voltage.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MAX211IDB
✅ Sustitución directa✓ En stock
$1.41 / unidad
Ver hoja de datos →MAX211CDB
✅ Sustitución directa✓ En stock
$3.2251 / unidad
Ver hoja de datos →MAX211CWI+
✅ Sustitución directa✓ En stock
Consulte el precio
Ver hoja de datos →MAX211CAI+
✅ Sustitución directa✓ En stock
$5.3 / unidad
Ver hoja de datos →MAX213ECAI+
✅ Sustitución directa✓ En stock
$4.55 / unidad
Ver hoja de datos →ADM209AR Especificaciones
| Product Type | RS-232 driver/receiver transceiver |
| Tensión de alimentación | +5 V |
| Velocidad de datos | 120 kbps |
| External Charge-Pump Capacitor | 0.1 µF |
| Driver Output Swing | 9 V |
| Receiver Input Voltage Range | 30 V |
| Power Consumption | 15 mW |
| Number of Drivers | 2 |
| Number of Receivers | 2 |
| Logic Technology | CMOS |
| Interface Standard | RS-232 |
| Encapsulado | 24-SOIC, 0.295 inch / 7.50 mm width |
| Tipo de montaje | Surface Mount |
| Shutdown Feature | Low-power shutdown; receiver-active shutdown behavior specified for ADM213 family context |
| Latch-Up Protection | Latch-up free |
| Replacement Reference | Plug-in upgrade for MAX205-211/213 family |
Guía de configuración de pines de ADM209AR 24-soic, 0.295 inch / 7.50 mm width
Configuración de pines para ADM209AR (encapsulado 24-soic, 0.295 inch / 7.50 mm width). 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 ADM209AR.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
ADM209AR es adecuado para 6 aplicacións: Embedded Serial Console, Industrial Control Panels, Test and Measurement Instruments, Computer Peripherals, Communications Equipment, Point-of-Sale and Service Terminals.
Embedded Serial Console
The ADM209AR fits an embedded debug or configuration console where a +5 V controller must connect to an RS-232 terminal or service port. Its two drivers and two receivers support bidirectional communication, while the 120 kbps rate is appropriate for command and diagnostic traffic. Place the transceiver between the host UART and a protected connector, verify the CMOS logic thresholds, and route the external 0.1 µF charge-pump capacitors close to the IC. The major design benefit is that the interface operates from +5 V without requiring a separate negative supply rail.
Recomendado
Industrial Control Panels
The ADM209AR can provide the legacy RS-232 physical layer for an industrial controller, operator panel, or service interface. The 120 kbps data rate accommodates many configuration, status, and supervisory channels, while the 30 V receiver input rating helps with the external cable environment. Use it where the controller already has a +5 V CMOS UART. Add appropriately selected surge and ESD protection at the connector, maintain a controlled reference ground, and verify the required industrial temperature and EMC requirements from the exact datasheet.
Recomendado
Test and Measurement Instruments
The ADM209AR is suitable for RS-232 control and data links on test equipment, measurement instruments, and laboratory peripherals. The transceiver combines two transmit channels with two receive channels, allowing status reporting and command reception through one compact interface. Its +5 V supply arrangement and 120 kbps rate simplify integration with legacy instrument-control architectures. Keep the analog ground return continuous between the instrument and connector, validate the 9 V output swing at the required load, and place protection components where cable transients enter the board.
Recomendado
Computer Peripherals
The ADM209AR can connect a +5 V peripheral controller to a legacy computer or terminal port through an RS-232 interface. The 120 kbps rate is suitable for printer, scanner, adapter, and control-box links that were designed around conventional UART signaling. Use the two receiver channels for incoming control or handshake signals and the driver channels for outgoing data. Because the retrieved data does not provide complete logic-level or temperature details, verify the host interface against the ADM209AR datasheet before production and provide the connector with a defined chassis or signal-ground strategy.
Recomendado
Communications Equipment
The ADM209AR is appropriate for a communications device that must support an RS-232 management, status, or service channel. The 120 kbps rate provides more bandwidth than slow control links while remaining compatible with legacy UART infrastructure. The integrated charge-pump approach allows the board to generate the required RS-232 voltage levels from +5 V, reducing system power-supply complexity. In a multi-port product, keep each interface's cable-side return isolated according to the equipment architecture and use the exact datasheet limits to design surge, ESD, and fault-current protection.
Recomendado
Point-of-Sale and Service Terminals
The ADM209AR can support the RS-232 link found in older point-of-sale terminals, service equipment, and peripheral controllers. Its two-driver/two-receiver arrangement allows a compact bidirectional port, and the 120 kbps rate is more than adequate for short command and transaction-control exchanges. The +5 V supply requirement matches many legacy embedded controllers. Confirm the host's UART voltage levels, cable length, connector wiring, and receiver thresholds, then add connector-side protection if the equipment is exposed to user-accessible cabling.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ADM209AR — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MAX211IDB | MAX211CDB | MAX211CWI+ | MAX211CAI+ | MAX213ECAI+ |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Package | 24-SOIC | SOIC-24 | SOIC-24 | SOIC-24 | SOIC-24 | SOIC-24 |
Diferenciadores clave
- Verified +5 V CMOS RS-232 positioning (frente a MAX211IDB)
- Two-driver and two-receiver architecture (frente a MAX211CDB)
- Cable-side receiver rating (frente a MAX211CWI+)
- High-speed legacy serial capability (frente a MAX211CAI+)
Notas de diseño
Place the ADM209AR charge-pump capacitors close to the pins identified in the exact datasheet, observing polarity and the 0.1 µF value specified by the retrieved data. Keep the high-current charge-pump loops compact and provide local supply decoupling near the IC. Route the two driver outputs and two receiver inputs away from the logic side where practical, and define the connector ground return early because cable-side transients can couple into the host UART.
Treat the RS-232 connector as a hostile cable boundary. Add appropriately rated ESD or surge protection at the connector, maintain a controlled chassis-to-signal-ground strategy, and verify that the protection network does not distort the 120 kbps data rate or the receiver thresholds. The retrieved 30 V receiver input range is a useful device-level input rating, but it is not a substitute for external connector protection.
Do not assume that every MAX205, MAX211, or MAX213-family suffix is automatically pin-compatible with ADM209AR. Check channel count, shutdown polarity, charge-pump pinout, receiver logic thresholds, supply pins, package width, and temperature grade. Also verify that the external 0.1 µF capacitors meet the exact voltage and temperature requirements; those details were not present in the supplied evidence.
For a 120 kbps link, prioritize a short return path, controlled cable termination, and protection components with low capacitive loading. Avoid routing RS-232 driver outputs beneath sensitive analog or high-speed digital sections. If the connector cable is long or the environment is electrically noisy, validate the receiver margin and system error rate with the actual cable, grounding arrangement, and protection network rather than relying on nominal logic speed alone.
Información de cumplimiento
The supplied web results do not provide verified RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements for ADM209AR. The AEC-Q100 field is not applicable because ADM209AR is an RS-232 interface IC, not an automotive-qualified device identified in the supplied data.
