MAX202ESE-C78046 - 5V RS-232 Transceiver | Analog Devices
Teilenummer: MAX202ESE-C78046 ✓ AktivMAX202ESE-C78046 Übersicht
A dual RS-232 transceiver is an interface IC that converts logic-level signals into balanced, voltage-compliant RS-232 levels and converts incoming RS-232 signals back into CMOS-compatible logic. The MAX202 family belongs to the hierarchy RS-232 transceiver → interface controller → digital interface IC → semiconductor. It is intended to bridge a modern digital controller or UART with an RS-232 connector or cable.
The MAX202 architecture combines transmitter and receiver functions with an on-chip charge-pump circuit. The charge pump generates the elevated voltage required to produce ±5V EIA/TIA-232E output levels from a single 5V supply. External 0.1 µF capacitors support the charge-pump function, while the enable and shutdown inputs let the system control whether the interface operates normally or enters a low-power state.
According to the Analog Devices MAX202 product information, the drivers maintain ±5V EIA/TIA-232E output levels at data rates in excess of 120 kbps when loaded according to the EIA/TIA-232E specification. This makes the interface suitable for conventional serial-control links, point-of-sale equipment, industrial controllers, test systems, and legacy computer equipment. Multiple channels can also support hardware handshaking through the receiver and driver combinations available in the family.
A MAX202 is appropriate when the target port requires true RS-232 levels rather than short-distance TTL or LVCMOS signaling. The external charge-pump capacitors and 16-pin SOIC footprint require careful placement, but the result is a compact, standardized interface for equipment where cable length and ground-offset tolerance are more important than maximum data throughput.
During layout, place the 0.1 µF charge-pump capacitors close to their designated pins and route the high-voltage charge-pump node as short as possible. Confirm the host-side UART logic levels, RS-232 connector pin assignment, and cable-length requirements before release. Add suitable protection for exposed external ports because the IC itself is not an ESD-protection device.
This product page consolidates the MAX202 function, package, interface parameters, sourcing options, and design guidance into a focused engineering reference. It also distinguishes true same-package drop-in alternatives from parts that merely perform a similar RS-232 function but require a different footprint or interface architecture.
Drop-in-Alternativen für MAX202ESE-C78046 – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit MAX202ESE-C78046 (gleiche Bauform und Footprint) – abweichend in Product Type, Maximum Data Rate, Package, Driver Output Level, ESD Protection.
MAX202IDWR
✅ Drop-In ⚠️ Spezifikationen ungeprüftPreis auf Anfrage
Datenblatt ansehen →MAX202CDWR
✅ Drop-In ⚠️ Spezifikationen ungeprüftPreis auf Anfrage
Datenblatt ansehen →MAX202IDE4
✅ Drop-InPreis auf Anfrage
Datenblatt ansehen →MAX202ECSE
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
MAX202EESE
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
MAX202ESE-C78046 Technische Daten
| Product Type | Dual RS-232 transceiver |
| Versorgungsspannung | 5 V |
| Driver Output Level | ±5 V EIA/TIA-232E |
| Maximum Data Rate | Greater than 120 kbps |
| Number of Driver Channels | 2 channels |
| Number of Receiver Channels | 2 channels |
| External Charge-Pump Capacitors | 0.1 µF |
| Power Control | Enable and shutdown functions |
| Gehäuse | SOIC-16 |
| Montageart | Surface mount |
| RoHS-Status | RoHS |
MAX202ESE-C78046 soic-16 Pinbelegungsleitfaden
Pinbelegung für MAX202ESE-C78046 (soic-16-Gehäuse). Pin-Nummerierung, Funktionen und Anschlussdiagramme sind im Herstellerdatenblatt definiert. Entnehmen Sie diesem den genauen Footprint und Lötrichtlinien.
Keine detaillierten Pinbelegungsdaten verfügbar für MAX202ESE-C78046.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
MAX202ESE-C78046 ist geeignet für 6 Anwendungs: Industrial Serial Control Ports, Point-of-Sale Terminal Equipment, Test and Measurement Instruments, Legacy Computer Peripherals, Security and Access-Control Systems, Data Acquisition and Service Interfaces.
Industrial Serial Control Ports
The MAX202ESE-C78046 suits industrial controllers that must translate a host UART into an RS-232 connection for meters, drives, test equipment, or service interfaces. Its dual-driver and dual-receiver arrangement supports multiple RS-232 signals within a 16-pin SOIC footprint, while the greater-than-120-kbps family capability covers common 115200-baud links. The 5V architecture simplifies system power design, but the board still needs a solid signal ground, correct connector wiring, and external transient protection for cables that leave the enclosure. The enable and shutdown functions can also help the controller keep an unused port inactive during startup or reset.
Empfohlen
Point-of-Sale Terminal Equipment
The MAX202ESE-C78046 can interface a point-of-sale controller with legacy receipt printers, scanners, or customer-display equipment that use RS-232. Two transmitters and two receivers are useful for bidirectional command and status channels without requiring multiple interface packages. Its greater-than-120-kbps capability is more than adequate for many legacy peripherals, while the SOIC-16 package supports compact controller boards. Designers should confirm whether the peripheral expects an RS-232 port or a TTL-level UART, because the MAX202 is not a direct TTL driver. Correct connector pin assignment, chassis or signal grounding, and surge protection remain essential for reliable field operation.
Empfohlen
Test and Measurement Instruments
The MAX202ESE-C78046 is appropriate for laboratory and field-test equipment that must communicate with older analyzers, signal generators, or automated test systems through RS-232. The 5V supply and 0.1 µF charge-pump capacitors suit compact instrument designs, and the more-than-120-kbps data-rate capability supports modern UART control traffic as well as legacy instrumentation. Place the charge-pump capacitors close to the device and keep the high-voltage node compact to reduce coupling into sensitive measurement circuitry. An RS-232 transceiver provides logical signaling only, so analog measurement accuracy still depends on separate input protection, isolation, and grounding design.
Empfohlen
Legacy Computer Peripherals
The MAX202ESE-C78046 allows a modern embedded controller to communicate with legacy RS-232 computers, terminal adapters, service tools, and peripheral equipment. Its ±5V EIA/TIA-232E output levels and greater-than-120-kbps performance align with conventional RS-232 links, and the dual-channel configuration supports data and handshake signals. Because RS-232 uses single-ended signaling relative to ground, cable length and ground differences can affect reliability even when the baud rate is well within specification. Use a quality shielded cable, route returns carefully, and consider galvanic isolation where the two systems can sit at different ground potentials.
Empfohlen
Security and Access-Control Systems
The MAX202ESE-C78046 can provide an RS-232 maintenance or peripheral connection for access-control readers, alarm panels, and card-system controllers. Its enable and shutdown controls allow the host to manage communication states, and the 16-pin SOIC package is convenient for compact controller boards. Because access-control equipment may be installed with long cables and unknown external fault conditions, the interface should be paired with appropriately rated surge and ESD protection. Maintain a low-impedance ground path between the transceiver and connector shield, and verify that the power budget remains acceptable when the interface is enabled.
Empfohlen
Data Acquisition and Service Interfaces
The MAX202ESE-C78046 is useful in data-acquisition equipment that retains a service port for configuration, diagnostics, or external controller communication. Its dual transmitter and receiver channels can carry command and response traffic, and the greater-than-120-kbps family rating supports practical service-link speeds. Keep the interface physically separated from high-gain analog inputs where possible, use a single defined ground reference at the board level, and place external protection at the connector entry point. If the acquisition system has a separate low-voltage control domain, confirm that the host UART thresholds and the MAX202 logic-side levels are compatible.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für MAX202ESE-C78046 – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | MAX202IDWR | MAX202CDWR | MAX202IDE4 | MAX202ECSE | MAX202EESE |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | SOIC-16 | SOIC-16 | SOIC-16 | SOIC-16 | SOIC-16 | SOIC-16 |
| Product Type | Dual RS-232 transceiver | Dual RS-232 transceiver | Dual RS-232 transceiver | RS-232 transceiver | Dual RS-232 transceiver | Dual RS-232 transceiver |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Driver Output Level | ±5 V EIA/TIA-232E | ±5 V EIA/TIA-232E | ±5 V EIA/TIA-232E | ±5 V EIA/TIA-232E | ±5 V EIA/TIA-232E | ±5 V EIA/TIA-232E |
| Data Rate | Greater than 120 kbps | Greater than 120 kbps | Greater than 120 kbps | Greater than 120 kbps | Greater than 120 kbps | Greater than 120 kbps |
| External Charge-Pump Capacitors | 0.1 µF | 0.1 µF | 0.1 µF | 0.1 µF | 0.1 µF | 0.1 µF |
| Driver and Receiver Channels | 2 drivers and 2 receivers | 2 drivers and 2 receivers | 2 drivers and 2 receivers | 2 drivers and 2 receivers | 2 drivers and 2 receivers | 2 drivers and 2 receivers |
Wichtigste Unterscheidungsmerkmale
- Documented high-speed RS-232 performance (vs. MAX202IDE4)
- Two full duplex interface channels in a compact footprint (vs. MAX202CDWR)
- Customer-specific ordering code with standard MAX202 architecture (vs. MAX202EESE)
Designhinweise
Place both 0.1 µF charge-pump capacitors directly beside the pins designated in the MAX202 datasheet. Keep the charge-pump connection and its elevated-voltage node as short and compact as practical, because long traces can increase radiated coupling and susceptibility to adjacent high-impedance circuitry. Route the logic-side UART traces away from those nodes, and provide a continuous ground reference immediately beneath the SOIC-16 device.
RS-232 is a single-ended interface, so ground offset and cable loading can degrade operation even at a nominal 115200-baud rate. Connect the transceiver ground to the connector-side signal return using the shortest practical path, and pair the transmit and receive conductors with their returns in the cable. Avoid splitting the board ground excessively between the digital logic and connector regions, since current flowing through a shared ground impedance can create receiver errors.
Do not confuse the MAX202 RS-232 electrical interface with a TTL UART. The host-side logic pins are not directly interchangeable with a connector carrying ±5V RS-232 levels. Verify the connector pinout, TX-to-RX crossover, enable and shutdown states, and logic thresholds before fabrication. Also confirm the 5V supply tolerance and the charge-pump capacitor value against the exact manufacturer documentation.
For an exposed external connector, place ESD and surge-protection components at the connector entry point and connect their return path directly to chassis or signal ground according to the protection-device recommendation. Keep the protected node away from the MAX202 pins. The transceiver itself is not a substitute for a connector protection network, particularly when the RS-232 cable leaves the enclosure or connects to unknown equipment.
Compliance-Informationen
The MAX202ESE-C78046 listing identifies the device as RoHS compliant. No exact REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification declaration was established for the customer-specific ordering code.
