ADM202JRW - 120kbps Dual RS-232 Transceiver | Analog Devices
N.º da peça: ADM202JRW ✓ AtivoADM202JRW Visão geral
An RS-232 transceiver is an interface IC that converts logic-level signals into balanced, voltage-swing serial signals and converts incoming RS-232 levels back into digital logic. Within the signal-chain hierarchy, the ADM202 belongs to the RS-232 interface class, connecting UART, microcontrollers, industrial controllers, and data-processing equipment to longer-distance serial links. Its BiCMOS construction and efficient charge-pump design provide compact integration without a separate negative power supply.
Key features include two transmit channels, two receive channels, a single 5 V supply, and data-rate support up to 120 kbit/s. The charge pump generates approximately ±10 V output levels from the 5 V supply, while external 0.1 µF capacitors supply the required charge-pump energy. The device meets or exceeds the TIA/EIA-232-E and V.28 specifications, providing compatibility with conventional RS-232 port signaling.
The fast driver slew rate supports 120 kbit/s operation and preserves usable bandwidth for UART-based control, monitoring, and point-to-point communication links. High driver drive current allows extended cable lengths compared with weaker line drivers, while BiCMOS construction reduces power consumption to approximately 10 mW and helps protect against latch-up. The specified 16-pin SOIC package supports conventional surface-mount assembly and automated manufacturing.
Typical uses include industrial serial adapters, instrumentation interfaces, point-of-sale equipment, data acquisition modules, and embedded control systems. It is especially useful where a design needs both transmit and receive functions but only two channels, and where generating a negative RS-232 voltage with a discrete charge pump would add component count and board area.
Designers should place the charge-pump capacitors close to their associated pins and provide the required bypass capacitance at the 5 V supply. Because this is a single-ended RS-232 interface, transient protection and grounding remain important when the connected cable leaves the equipment enclosure or crosses substantial noise environments.
This page combines manufacturer specifications, verified distributor information, package-level replacement guidance, and application-oriented design notes to help engineers evaluate the ADM202JRW beyond a basic distributor listing.
Alternativas drop-in para ADM202JRW — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ADM202JRW (mesmo formato e footprint) — diferindo em Interface Standard.
ADM202EARNZ
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MAX232CWE+
✅ Drop-InConsulte o preço
Ver ficha técnica →MAX202CWE
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ICL232CBEZ
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
HIN232CBZ-T
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ADM202JRW Especificações
| Device Type | 2/2 RS-232 transceiver |
| Number of Drivers | 2 |
| Number of Receivers | 2 |
| Tensão de alimentação | 5 V |
| Maximum Supply Voltage | 5.5 V |
| Maximum Data Rate | 120 kbit/s |
| RS-232 Output Levels | ±10 V |
| Charge-Pump Capacitor | 0.1 µF |
| Power Consumption | 10 mW |
| Interface Standard | TIA/EIA-232-E and V.28 |
| Process Technology | BiCMOS |
| Faixa de temperatura de operação | 0°C to 70°C |
| Package Type | 16-pin SOIC |
| Tipo de montagem | Surface Mount |
| Cable Support | Extended cable lengths supported by high driver drive current |
| Latch-Up Protection | BiCMOS construction guards against latch-up |
Configuração de pinos do ADM202JRW
| Pino 1 | R1OUT — Receiver 1 output |
| Pino 2 | R2OUT — Receiver 2 output |
| Pino 3 | R2IN — Receiver 2 input |
| Pino 4 | R1IN — Receiver 1 input |
| Pino 5 | VCC — Positive supply connection |
| Pino 6 | C+ — Charge-pump capacitor connection |
| Pino 7 | C- — Charge-pump capacitor connection |
| Pino 8 | GND — Ground connection |
| Pino 9 | T1IN — Driver 1 input |
| Pino 10 | T2IN — Driver 2 input |
| Pino 11 | T2OUT — Driver 2 output |
| Pino 12 | T1OUT — Driver 1 output |
| Pino 13 | EN — Driver enable input |
| Pino 14 | VCC — Positive supply connection |
| Pino 15 | GND — Ground connection |
| Pino 16 | NC — Not connected |
Aplicações típicas
ADM202JRW é adequado para 6 aplicaçãos: Industrial UART Control Interfaces, Data Acquisition and Instrumentation, Point-of-Sale and Service Terminals, Embedded Serial Port Expansion, Security and Access-Control Equipment, Legacy Computer and Peripheral Connectivity.
Industrial UART Control Interfaces
The ADM202JRW fits industrial controller and data-acquisition equipment that must translate between 5 V UART logic and RS-232 signals. Its two drivers and two receivers support bidirectional communication from a single interface IC, while the documented 120 kbit/s rate covers supervisory protocols, configuration links, and point-to-point command channels. Running from one 5 V supply avoids a separate negative rail. According to the Analog Devices manufacturer data, the charge pump produces approximately ±10 V levels with only 0.1 µF capacitors, helping keep the interface section compact. Designers should still add suitable transient protection if the connector connects to external cabling.
Recomendado
Data Acquisition and Instrumentation
The ADM202JRW is appropriate for laboratory and industrial instrumentation requiring a compact, bidirectional RS-232 port. The 120 kbit/s maximum data rate is suitable for legacy instrument-control protocols and moderate command or measurement-data streams, while two channels allow simultaneous transmit and receive traffic. Its single 5 V operation integrates naturally with digital control circuitry. According to the verified manufacturer information, the BiCMOS process reduces power consumption to approximately 10 mW, which is useful in multi-instrument systems. For bench equipment connected to long or unprotected cables, add series damping and surge-protection components selected for the actual cable environment.
Recomendado
Point-of-Sale and Service Terminals
The ADM202JRW can provide the legacy serial port used by point-of-sale terminals, service consoles, and peripheral controllers. Two transmit and two receive channels cover the common RS-232 connection arrangement without requiring four separate driver or receiver devices. According to the Analog Devices product page, the charge pump operates from the 5 V supply and permits 0.1 µF capacitors, reducing board area compared with a discrete negative-voltage generator. The 120 kbit/s rate is more than adequate for many legacy peripheral protocols. Engineers should verify ground continuity and add cable-side protection if the terminal may be connected to longer or poorly shielded RS-232 cables.
Recomendado
Embedded Serial Port Expansion
The ADM202JRW can add a standards-compatible RS-232 port to an embedded controller or microcontroller platform that otherwise exposes only UART logic levels. Its 2/2 organization makes it useful for simultaneous host-to-device commands and device-to-host responses, while the single 5 V supply simplifies integration with digital logic. According to the verified manufacturer data, the BiCMOS implementation minimizes power consumption to approximately 10 mW and guards against latch-up. The 16-pin SOIC package is also straightforward for automated assembly. Confirm that the host UART logic levels are compatible and that unused enable or receive outputs are handled according to the ADM202 datasheet.
Recomendado
Security and Access-Control Equipment
The ADM202JRW is suitable for access-control readers, alarm panels, and security equipment that retain an RS-232 configuration port for diagnostics or configuration. The 120 kbit/s capability supports typical serial configuration traffic, and the two-channel arrangement permits command and response traffic through one compact device. According to the verified Analog Devices data, high driver drive current supports extended cable lengths while the integrated charge pump avoids external negative-voltage circuitry. Because security installations can place cables outside controlled enclosures, the design should include appropriately selected transient, surge, and ESD protection rather than relying on the interface IC alone.
Recomendado
Legacy Computer and Peripheral Connectivity
The ADM202JRW supports legacy computer and peripheral systems that still depend on RS-232 rather than USB. Its 120 kbit/s operation is appropriate for configuration ports, boot-loader links, and older service interfaces, while two drivers and two receivers support the customary full-duplex wiring arrangement. According to the manufacturer product page, the part meets or exceeds TIA/EIA-232-E and V.28 requirements and develops ±10 V levels from a 5 V supply. Surface-mount SOIC construction eases automated production, but a new design should assess whether a modern interface converter would provide better long-term availability.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ADM202JRW — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
MAX232CWE and MAX202CWE may suit designs requiring a Maxim source, but verify their exact data rate, enable behavior, and electrical thresholds before changing the BOM. ICL232CBEZ and HIN232CBZ-T are reasonable cross-brand review candidates because the verified comparison identifies them as 2/2 RS-232 devices in 16-pin SOIC packages. Their internal differences still require direct datasheet validation. If any candidate changes shutdown, enable polarity, pin assignment, or supply limits, treat it as a redesign rather than an automatic drop-in replacement.
Comparação com alternativas
| Parâmetro | Este produto | ADM202EARNZ | MAX232CWE | MAX202CWE | ICL232CBEZ | HIN232CBZ-T |
|---|---|---|---|---|---|---|
| Package | SOIC-16 | SOIC-16 | SOIC-16 | SOIC-16 | SOIC-16 | SOIC-16 |
| Brand | Analog Devices | Analog Devices | Maxim Integrated | Maxim Integrated | Renesas Electronics | Renesas Electronics |
| Transceiver Configuration | 2 drivers, 2 receivers | 2 drivers, 2 receivers | 2 drivers, 2 receivers | 2 drivers, 2 receivers | 2 drivers, 2 receivers | 2 drivers, 2 receivers |
Principais diferenciais
- Documented high-speed operation (vs MAX232CWE)
- Small charge-pump capacitors (vs MAX202CWE)
- Defined RS-232 standards compliance (vs HIN232CBZ-T)
- Low documented power consumption (vs ICL232CBEZ)
Notas de projeto
Place the 0.1 µF charge-pump capacitors directly between the C+ and C- pins and the device ground reference, keeping their ground paths short and symmetrical. According to the Analog Devices manufacturer data, the integrated charge pump can develop ±10 V RS-232 levels with capacitors as small as 0.1 µF. Add local supply bypassing near the 5 V and ground pins, and route the RS-232 outputs away from sensitive digital and analog traces.
Do not treat every 16-pin SOIC RS-232 transceiver as automatically interchangeable. The verified comparison material identifies functional similarity among the ADM202, MAX232, MAX202, ICL232, and HIN232 families but also notes circuit differences. Before substituting a part, verify driver-enable polarity, shutdown behavior, supply limits, receiver thresholds, charge-pump capacitor values, and the package drawing. A footprint match alone does not guarantee logic-level or timing compatibility.
RS-232 is a single-ended interface, so cable routing and grounding can materially affect noise immunity. Keep the interface ground connected to the equipment reference plane, route driver outputs as short as practical, and avoid placing them parallel to clocks, switching-regulator nodes, or sensitive sensor inputs. If the cable crosses an industrial boundary or leaves the enclosure, add properly rated surge and ESD protection; the ADM202's BiCMOS latch-up resistance does not replace external transient protection.
The ADM202 eliminates the need for a separate negative RS-232 supply because its charge pump generates approximately ±10 V from a single 5 V source. Nevertheless, verify the supply's tolerance and noise at the IC, particularly when the same 5 V rail feeds switching converters. The verified data specifies a maximum supply voltage of 5.5 V, so leave transient margin and avoid overshoot from inductive or capacitive load steps.
Informações de conformidade
The supplied verified snippets do not explicitly establish RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. The part is a commercial RS-232 interface IC rather than an automotive-qualified product, so AEC-Q100 is treated as not applicable.