ADM202JRN - Dual RS-232 Transceiver, 5V | Analog Devices
N.º de pieza: ADM202JRN ✓ ActivoADM202JRN Descripción general
An RS-232 transceiver is an interface IC that converts logic-level signals into differential, bipolar RS-232 line levels and converts incoming RS-232 signals back into CMOS-compatible logic. In the broader electronics hierarchy, an RS-232 transceiver belongs to the interface-IC family and provides the physical-layer conversion between digital logic and a wired communications port. The ADM202JRN is designed for equipment that needs a single 5 V supply rather than a separate external RS-232 voltage source.
The ADM202 uses a charge-pump voltage converter to generate the positive and negative voltages required by RS-232 drivers. According to the manufacturer information, the charge pump permits the external capacitor value to be as small as 0.1 µF. The fast driver slew rates permit operation at 120 kB/s, while the high drive-current capability is intended to support extended cable lengths in suitable RS-232 applications.
The device meets or exceeds the TIA/EIA-232-E and V.28 specifications identified in the Analog Devices product description. Its dual-driver and dual-receiver arrangement supports two independent RS-232 channels in one package, reducing board area compared with separate single-direction driver and receiver devices. The 16-pin SOIC package is also compatible with common surface-mount manufacturing and assembly processes.
Typical applications include industrial serial adapters, test equipment, point-of-sale terminals, data acquisition systems, computer peripherals, and control equipment that exchange serial data over RS-232 links. In these systems, the ADM202JRN provides the interface between a low-voltage digital controller and an external RS-232 connector. The 5 V supply requirement simplifies system power architecture, while the integrated charge pump eliminates a separate bipolar power supply for the line drivers.
When laying out the circuit, place the charge-pump capacitors and the RS-232 line-side protection components close to the device and connector. Verify the transceiver’s logic levels, ground connection, and cable routing against the system interface requirements. The complete pin assignment and recommended external network should be taken from the manufacturer datasheet before PCB routing.
This product page combines the manufacturer’s technical description with practical interface guidance, packaging details, comparison criteria, and sourcing information. It is intended to help engineers confirm electrical fit, interface function, and board-level implementation requirements before selecting the ADM202JRN for a 5 V RS-232 design.
Alternativas directas para ADM202JRN — 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 ADM202JRN (mismo factor de forma y huella) — difiere en Package, Product Type, Supply Voltage, Maximum Data Rate, Number of Drivers.
ADM208EAR-REEL
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ADM202JRW
✅ Sustitución directaConsulte el precio
Ver hoja de datos →MAX232NSR
✅ Sustitución directaConsulte el precio
Ver hoja de datos →SP232ECN-L/TR
✅ Sustitución directaConsulte el precio
Ver hoja de datos →ADM207ARZ
✅ Sustitución directaConsulte el precio
Ver hoja de datos →ADM202JRN Especificaciones
| Product Type | Dual RS-232 line driver/receiver pair |
| Number of Drivers | 2 |
| Number of Receivers | 2 |
| Tensión de alimentación | 5 V |
| RS-232 Output Levels | Approximately ±10 V |
| Charge Pump Capacitor | 0.1 µF |
| Maximum Data Rate | 120 kB/s |
| Interface Standard | TIA/EIA-232-E and V.28 |
| Encapsulado | 16-pin SOIC |
| Tipo de montaje | Surface mount |
| Transceiver Configuration | 2/2 full-duplex RS-232 |
| Power Architecture | On-chip charge pump |
| Cable Support | Extended cable lengths with high drive currents |
Guía de configuración de pines de ADM202JRN 16-pin soic
Configuración de pines para ADM202JRN (encapsulado 16-pin soic). 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 ADM202JRN.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
ADM202JRN es adecuado para 6 aplicacións: Industrial RS-232 Serial Adapter, Point-of-Sale Terminal Interface, Test and Measurement Equipment, Data Acquisition Control Port, Computer Peripheral Connectivity, Embedded Control Console.
Industrial RS-232 Serial Adapter
The ADM202JRN suits industrial adapters that need two RS-232 channels from one 5 V supply. Its two drivers and two receivers avoid the board area of separate interface devices, while the on-chip charge pump reduces the external high-voltage supply requirement. With operation rated up to 120 kB/s and approximately ±10 V generated output levels, it can serve equipment links whose baud rate and cable length remain within the interface specifications. Use a common ground and appropriately placed protection network at the connector, and validate signal integrity over the intended cable length.
Recomendado
Point-of-Sale Terminal Interface
The ADM202JRN can connect a point-of-sale controller or peripheral to an RS-232 equipment port using only a 5 V logic supply. The two-driver, two-receiver arrangement supports two interface channels in a 16-pin SOIC, which helps conserve PCB area in compact terminals. Its fast slew rates permit communication at rates up to 120 kB/s, while the integrated charge pump supports external capacitors as small as 0.1 µF. Confirm connector pin assignment, grounding, and transient protection before production release.
Recomendado
Test and Measurement Equipment
The ADM202JRN is appropriate for test and measurement instruments that expose legacy RS-232 control or data ports. A single 5 V supply simplifies the instrument power tree, while the integrated charge pump eliminates a separate ±12 V generator for the RS-232 drivers. Two channels allow simultaneous control and response paths, and the 120 kB/s capability is well suited to command traffic rather than high-bandwidth streaming. Use the manufacturer pin table and application network to reproduce the equipment's interface behavior.
Recomendado
Data Acquisition Control Port
The ADM202JRN can provide the RS-232 control link between a data acquisition unit and a host computer or controller. Its two channels support separate transmit and receive paths, and its 120 kB/s limit suits configuration commands, status responses, and moderate data transfers. Operating from 5 V reduces the number of rails needed beside the acquisition electronics, while approximately ±10 V generated levels support compliant RS-232 signaling. Verify cable length, grounding, and receiver thresholds against the acquisition system's operating environment.
Recomendado
Computer Peripheral Connectivity
The ADM202JRN is useful in legacy computer peripherals and service equipment that still communicate through RS-232. The 16-pin SOIC package supports compact surface-mount layouts, and the two-driver, two-receiver architecture can implement a bidirectional port plus an additional channel. Its integrated charge pump and 0.1 µF capacitor capability help simplify board area compared with discrete driver-receiver pairs. Designers should verify logic thresholds, receiver enable behavior, and the exact connector mapping in the manufacturer documentation.
Recomendado
Embedded Control Console
The ADM202JRN can serve as the host-side port in an embedded control console that uses a 5 V system rail. Two receivers allow status lines to be monitored while two drivers support command outputs, making the device suitable for multi-signal RS-232 links. The 120 kB/s data-rate capability supports control and diagnostic traffic, and the compact SOIC-16 footprint leaves board area for the embedded processor and supporting circuitry. Follow the datasheet's external capacitor and interface-network recommendations closely.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ADM202JRN — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ADM208EAR-REEL | ADM202JRW | MAX232NSR | SP232ECN-L/TR | ADM207ARZ |
|---|---|---|---|---|---|---|
| Product Type | Dual RS-232 line driver/receiver pair | Dual RS-232 driver/receiver | Dual RS-232 driver/receiver | Dual RS-232 transceiver | Dual RS-232 transceiver | Dual RS-232 transceiver family option |
| Brand | Analog Devices | Analog Devices | Analog Devices | Maxim Integrated | Exar | Analog Devices |
| Package | SOIC-16 | SOIC-16 | SOIC-16 | SOIC-16 | SOIC-16 | SOIC-16 |
Diferenciadores clave
- Two full-duplex RS-232 channels in one package (frente a MAX232NSR)
- Integrated charge pump with small external capacitors (frente a SP232ECN-L/TR)
- Manufacturer support for 120 kB/s operation and extended cable use (frente a ADM208EAR-REEL)
Notas de diseño
The ADM202JRN operates from a single 5 V supply and uses an integrated charge pump to produce approximately ±10 V RS-232 levels. Decouple the 5 V rail close to the device with the capacitance specified by the manufacturer application circuit. Keep the charge-pump capacitor loop compact because trace inductance and excessive loop area can degrade output waveform quality and increase radiated emissions.
Place the ADM202JRN, its charge-pump capacitors, and the external RS-232 interface components according to the manufacturer layout guidance. Route driver outputs directly toward the connector or protection network, and keep receiver inputs away from switching nodes and noisy digital clocks. A continuous ground reference and short return-path geometry are especially important when the connector cable introduces external ground potential differences.
Do not treat a same-package alternative as an automatic drop-in replacement. Before replacing the ADM202JRN, compare the complete pin map, supply pins, driver and receiver enable functions, charge-pump capacitor values, logic thresholds, data-rate limits, and receiver fail-safe behavior. The candidate list identifies SOIC-16 alternatives, but each candidate's manufacturer datasheet remains the controlling document for PCB-level compatibility.
Fast RS-232 driver edge rates can produce radiated and conducted emissions even when the logic-side clocking is slow. Use the shortest practical output routing, maintain a solid ground plane, and apply the manufacturer's recommended protection and filtering network at the connector. Validate emissions and susceptibility in the final enclosure because cable placement, ground geometry, and adjacent high-current circuitry materially affect system-level EMI performance.
Información de cumplimiento
The interface function is not an automotive-qualified application. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status require confirmation from the current manufacturer product documentation or declaration.