ADM203JNZ - Dual 5V RS-232 Transceiver | Analog Devices
Teilenummer: ADM203JNZ ✓ AktivADM203JNZ Übersicht
An RS-232 transceiver is an interface IC that converts logic-level TTL signals into differential, bipolar RS-232 line levels and converts incoming RS-232 signals back into logic-compatible levels. It belongs to the transceiver class within interface ICs and connects UART-based digital systems to serial ports, industrial equipment, data acquisition systems, and communications equipment. The ADM203JNZ combines drivers and receivers in one package while deriving the required positive and negative RS-232 voltage levels from a 5 V supply.
The principal features include dual RS-232 driver/receiver operation, a single +5 V supply, operation up to 120 kB/s, and fast driver slew rates. According to the manufacturer datasheet information identified in the verified search results, the high-drive-current implementation can also support extended cable lengths. The EIA-232-E and V.28 compliance statements provide useful context for systems designed around standardized RS-232 electrical behavior, while the integrated receiver and driver circuitry reduces the number of discrete interface components required.
The ADM203 series uses CMOS-compatible driver and receiver circuitry with external 0.1 µF charge-pump capacitors, eliminating the need for a separate bipolar supply. This architecture allows compact single-supply equipment while retaining the voltage translation required by RS-232. Designers must still account for the charge-pump capacitor tolerance, startup behavior, connector ground, cable routing, and the large voltage swings present at the physical interface.
Typical uses include serial-port adapters, industrial controllers, test and measurement instruments, point-of-sale terminals, data loggers, and embedded systems that expose a legacy RS-232 port. It is particularly appropriate when a board requires two RS-232 channels and the system uses a 5 V supply. A UART or other communications controller provides the parallel logic data, while the ADM203JNZ handles the physical-layer conversion.
Place the two 0.1 µF charge-pump capacitors close to their designated pins, maintain the datasheet-recommended loop area, and connect the interface reference ground to the circuit ground according to the layout guidance. Confirm signal polarity, receiver enable behavior, and cable length during design review. The 120 kB/s rating should not be interpreted as permission to use unshielded cabling at every installation distance because RS-232 cable performance remains system-dependent.
This product record combines the verified manufacturer-derived features, distributor availability references, packaging information, and drop-in comparison candidates in one engineering-focused view. It also distinguishes documented electrical attributes from unavailable pricing, lifecycle, environmental, and detailed pinout data rather than estimating missing values.
Drop-in-Alternativen für ADM203JNZ – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
ADM202JNZ
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
MAX203EPP
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MAX203EPP+G36
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ADM203JNZ Technische Daten
| Product Type | Dual RS-232 transmitter/receiver interface IC |
| Number of Driver Channels | 2 channels |
| Number of Receiver Channels | 2 channels |
| Versorgungsspannung | +5 V |
| Maximum Data Rate | 120 kB/s |
| Charge-Pump Capacitor Value | 0.1 µF |
| Logic Technology | CMOS |
| Interface Standard | EIA-232-E and V.28 |
| Gehäuse | 20-pin PDIP-N |
| Montageart | Through-hole |
| Driver Slew Rate | Fast slew rate; numerical value not provided |
| Driver Output Current | High-drive-current operation; numerical value not provided |
ADM203JNZ 20-pin pdip-n Pinbelegungsleitfaden
Pinbelegung für ADM203JNZ (20-pin pdip-n-Gehäuse). Pin-Nummerierung, Funktionen und Anschlussdiagramme sind im Herstellerdatenblatt definiert. Entnehmen Sie diesem den genauen Footprint und Lötrichtlinien.
Keine detaillierten Pinbelegungsdaten verfügbar für ADM203JNZ.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
ADM203JNZ ist geeignet für 6 Anwendungs: Industrial Serial Controllers, Data Acquisition Equipment, Point-of-Sale Terminals, Embedded Service Interfaces, Instrumentation and Test Equipment, Serial Port Adapters.
Industrial Serial Controllers
The ADM203JNZ fits industrial serial-controller boards that need two bidirectional RS-232 ports while operating from a 5 V logic rail. Its four-channel arrangement provides two transmitters and two receivers, and its documented 120 kB/s capability supports moderate-speed links to test equipment, machinery, and configuration systems. The device’s EIA-232-E and V.28 compliance gives the interface a recognized electrical basis, while high-drive-current operation supports extended cable use when the cable and grounding are appropriate. Place the 0.1 µF charge-pump capacitors close to their pins and route the RS-232 outputs away from sensitive logic. Because temperature limits, ESD ratings, and isolation were not provided, industrial deployment still requires environmental and grounding qualification.
Empfohlen
Data Acquisition Equipment
The ADM203JNZ is suitable for laboratory and industrial data-acquisition equipment that must connect a controller or host to legacy RS-232 instruments. Two driver and two receiver channels provide useful bidirectional connectivity without requiring separate driver and receiver ICs. At up to 120 kB/s, the interface can transfer commands and measurements efficiently for many instrument-control protocols, while the +5 V supply simplifies integration with CMOS-based acquisition hardware. The key implementation consideration is signal integrity: keep charge-pump loops compact, use the recommended interface grounding arrangement, and validate cable performance at the intended distance. Unavailable ESD and temperature specifications must be checked before deploying the part in field or laboratory environments.
Empfohlen
Point-of-Sale Terminals
The ADM203JNZ can provide legacy peripheral connectivity in a point-of-sale terminal that must support serial printers, scanners, or customer displays. The dual-transmitter, dual-receiver arrangement can cover multiple RS-232 ports while retaining a single +5 V supply, reducing the component count compared with separate line drivers and receivers. Its documented 120 kB/s maximum rate exceeds the needs of many peripheral control protocols, and the 20-pin PDIP-N package is practical for through-hole or mixed-technology assemblies. Designers should confirm connector signal assignments and logic polarity, keep the external 0.1 µF capacitors correctly located, and evaluate whether the enclosure and cable path require additional surge or ESD protection beyond the device’s verified specifications.
Empfohlen
Embedded Service Interfaces
The ADM203JNZ is useful in embedded systems that retain a service or configuration port using RS-232. Two receive channels can support status or control inputs, while two transmit channels can drive an operator display, diagnostic tool, or service fixture. Operation from +5 V and support for 120 kB/s align with many embedded UART links, while the 20-pin PDIP-N package is useful for prototype, repair, and legacy-product boards. The interface should be enabled only when needed to reduce unnecessary activity, and the complete enable and shutdown behavior must be confirmed from the datasheet. Engineers should also avoid treating the logical UART connection as galvanic isolation; the verified excerpts do not establish isolation or robust industrial surge protection.
Empfohlen
Instrumentation and Test Equipment
The ADM203JNZ is appropriate for instrumentation that exchanges commands and results with a host computer or peripheral instrument. The +5 V supply, two transmitters, and two receivers support practical multi-direction communication arrangements, while the 120 kB/s rate is sufficient for numerous legacy measurement-control protocols. Fast slew rates and high drive current are specifically identified as beneficial for extended cable lengths, but cable qualification remains necessary because RS-232 performance depends on wiring, grounding, interference, and the connected equipment. Follow the manufacturer’s charge-pump capacitor placement and pin layout exactly. Before production use in calibrated test equipment, review the full electrical limits, temperature range, and ESD characteristics that were not included in the supplied search excerpts.
Empfohlen
Serial Port Adapters
The ADM203JNZ can serve as the core interface in a legacy serial-port adapter connected to a modern embedded controller. Its two driver and two receiver channels allow multiple RS-232 lines to be carried, while the +5 V supply and CMOS implementation align with contemporary embedded systems. The 120 kB/s maximum data rate supports many command protocols without requiring a modern differential physical layer. A practical adapter design must reproduce the verified pinout rather than rely on generic RS-232 assignments, provide the two 0.1 µF charge-pump capacitors, and use a connector ground strategy that limits loop area. Verify electrical levels and receiver enable polarity against the complete datasheet, and use an alternate interface such as RS-485 when long cables or noisy industrial environments are the primary requirement.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ADM203JNZ – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ADM202JNZ | MAX203EPP | MAX203EPP+G36 |
|---|---|---|---|---|
| Package | 20-pin PDIP-N | 20-pin PDIP-N | 20-pin PDIP-N | 20-pin PDIP-N |
| Brand | Analog Devices | Analog Devices | Maxim Integrated | Maxim Integrated |
| Device Type | Dual RS-232 transmitter/receiver | Dual RS-232 transmitter/receiver | RS-232 transceiver | +5 V RS-232 transceiver |
| Supply Voltage | +5 V | +5 V | +5 V | +5 V |
| Standard Compliance | EIA-232-E and V.28 | EIA-232-E and V.28 | RS-232 and V.28 | RS-232 and V.28 |
Wichtigste Unterscheidungsmerkmale
- Established Analog Devices dual-channel RS-232 integration (vs. MAX203EPP)
- Same-family sourcing option (vs. MAX203EPP+G36)
- Documented standards coverage (vs. MAX203EPP)
Designhinweise
Place both 0.1 µF charge-pump capacitors directly between their designated pins and ground, using the shortest possible traces and the smallest possible loop area. The verified ADM203 family information identifies these capacitors as part of the single +5 V implementation. Avoid routing the capacitor return current through noisy digital or power-conversion paths. Confirm the exact capacitor pin connections against the manufacturer diagram because the supplied excerpts do not provide a complete numbered pin table.
Do not treat the 120 kB/s datasheet capability as a guarantee that every RS-232 cable installation will work at that rate. Fast slew rates and high drive current support extended cable use, but external factors such as cable type, ground current, connector wiring, and interference can still cause errors. Validate the intended baud rate, cable length, and peripheral behavior at system level, and compare the target ADM203JNZ pinout against MAX203EPP or MAX203EPP+G36 before substituting either part.
Keep RS-232 driver outputs and external connector paths away from sensitive analog inputs, clock lines, and crystal circuits. Maintain a low-impedance common reference between the interface circuit and connected equipment, but follow the complete application guidance for connector ground placement. Because the verified excerpts do not establish the receive-enable logic, pin names, or isolation limits, PCB release should be gated on a pin-by-pin comparison with the manufacturer datasheet and any proposed drop-in replacement.
Compliance-Informationen
The supplied verified excerpts establish EIA-232-E and V.28 interface compliance but do not provide product-specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. Those fields remain unknown rather than inferred.
