MAX3243EEUI+ - 3/5 RS-232 Transceiver | Analog Devices
MPN: MAX3243EEUI+ ✓ सक्रियMAX3243EEUI+ अवलोकन
An RS-232 transceiver is an interface IC that converts logic-level digital signals into RS-232 line levels and converts incoming RS-232 signals back into CMOS-compatible logic. The MAX3243E belongs to the EIA/TIA-232 communications-interface family supporting V.28 and V.24 signaling. Its three-driver, five-receiver arrangement is particularly useful for DE-9 data-terminal-equipment connections, industrial control links, configuration ports, and service interfaces.
Key features include operation from a 3.0 V to 5.5 V supply, a maximum data rate of 250 kbps, ±15 kV human-body-model ESD protection on serial-port pins, and low-power shutdown with automatic wakeup. The shutdown current is specified at 1 µA, while the always-enabled ROUT2B and INVALID outputs provide remote-ring and input-validity monitoring functions.
The MAX3243E architecture supports both 3 V-powered and 5 V-powered systems. Automatic shutdown reduces supply consumption when the associated serial port is inactive, and automatic wakeup allows the interface to resume operation when valid serial activity is detected. This behavior is useful in distributed equipment where multiple RS-232 ports may remain present but unused for extended periods.
Typical applications include industrial serial controllers, test and measurement instruments, point-of-sale terminals, security equipment, embedded service consoles, and legacy computer peripherals. The five receivers also provide extra input channels beyond the three transmit channels, enabling ring-indicator, remote-control, or status-signal monitoring alongside the primary serial connection.
PCB design should preserve the manufacturer-recommended driver and receiver pin assignments, place the charge-pump and interface capacitors at their specified pins, and route exposed connector pins with direct ESD-current paths to ground. Check signal polarity, connector pin assignment, and logic levels before replacing an RS-232 controller with this transceiver.
This page provides a focused selection guide, practical interface-layout notes, and a parameter comparison covering the MAX3243EEUI+ and its identified same-package option. Engineers can use the manufacturer datasheet and product page to confirm final pin routing, timing limits, and operating conditions before releasing a PCB.
के लिए ड्रॉप-इन विकल्प MAX3243EEUI+ — समान पैकेज, पिन-टू-पिन संगत। PCB रीवर्क आवश्यक करने वाले भिन्न-पैकेज पार्ट्स शामिल नहीं हैं।
MAX3243EEUI
✅ ड्रॉप-इन📋 संदर्भ विकल्प (कैटलॉग में नहीं)
MAX3243EEUI+ विशेषताएं
| Product Type | RS-232 transceiver |
| Number of Drivers | 3 |
| Number of Receivers | 5 |
| Supply Voltage Range | 3.0 V to 5.5 V |
| Maximum Data Rate | 250 kbps |
| ESD Protection | ±15 kV HBM |
| शटडाउन करंट | 1 µA |
| Interface Standard | EIA/TIA-232 |
| V-Series Signaling | V.28 and V.24 |
| Duplex Mode | Full duplex |
| पैकेज | 28-pin TSSOP |
| माउंटिंग प्रकार | Surface mount |
| Automatic Shutdown | Supported |
| Automatic Wakeup | Supported |
| ROUT2B Output | Always enabled |
| INVALID Output | Always enabled |
MAX3243EEUI+ 28-pin tssop पिन कॉन्फ़िगरेशन गाइड
MAX3243EEUI+ (28-pin tssop पैकेज) के लिए पिन कॉन्फ़िगरेशन। पिन नंबरिंग, फ़ंक्शन और कनेक्शन आरेख निर्माता डेटाशीट में परिभाषित हैं। सटीक फुटप्रिंट और सोल्डरिंग दिशानिर्देशों के लिए इसे देखें।
इसके लिए कोई विस्तृत pinout data उपलब्ध नहीं: MAX3243EEUI+.
देखें डेटाशीट पूर्ण पिन कॉन्फ़िगरेशन के लिए।
सामान्य अनुप्रयोग
MAX3243EEUI+ के लिए उपयुक्त है 6 अनुप्रयोगs: Industrial Serial Controller Interface, Point-of-Sale Terminal Connectivity, Test and Measurement Equipment, Legacy Computer Peripheral Port, Embedded Service and Diagnostics Port, Security and Access-Control Equipment.
Industrial Serial Controller Interface
The MAX3243EEUI+ fits industrial controllers that must exchange commands and status through an RS-232 connection while operating from a 3.0 V to 5.5 V supply. Three drivers support outbound control signals, while five receivers accommodate incoming data and additional status lines. The 250 kbps rate provides useful bandwidth for configuration traffic, while ±15 kV HBM protection strengthens a cable-connected port exposed to industrial transients. Automatic shutdown and wakeup reduce consumption when the serial link is idle without requiring the host to manage every low-power transition.
अनुशंसित
Point-of-Sale Terminal Connectivity
The MAX3243EEUI+ can support a point-of-sale terminal that communicates with a peripheral through a legacy RS-232 port. Its three drivers cover primary and secondary transmit paths, while the five receivers leave capacity for handshake, ring, or remote-status signals. Operation from 3.0 V to 5.5 V permits integration with either modern embedded logic or conventional 5 V terminal electronics. The device’s 250 kbps maximum rate is appropriate for transactional data, and AutoShutdown can lower power use when the peripheral port remains connected but inactive.
अनुशंसित
Test and Measurement Equipment
The MAX3243EEUI+ is well suited to RS-232 service and command ports on test and measurement equipment. Multiple receivers allow the instrument to monitor more than one incoming signal, while the three transmit channels can control accessories or other instruments. The MAX3243E family operates from 3.0 V to 5.5 V and supports data rates up to 250 kbps for command exchange and result transfer. ±15 kV HBM protection adds useful margin on externally accessible ports, although the connector shield and enclosure grounding still require careful implementation.
अनुशंसित
Legacy Computer Peripheral Port
The MAX3243EEUI+ provides a practical interface bridge between modern controller logic and a legacy RS-232 peripheral. Its three-driver, five-receiver arrangement accommodates the classic DE-9 DTE use case and additional control signals, while the 28-pin TSSOP package supports compact board layouts. The 3.0 V to 5.5 V operating range allows integration across mixed-voltage equipment. At rates up to 250 kbps, the transceiver can handle configuration, status, and firmware-transfer traffic subject to the peripheral’s own protocol and timing limits.
अनुशंसित
Embedded Service and Diagnostics Port
The MAX3243EEUI+ suits embedded systems that retain a field-service or diagnostics connector using RS-232. Three transmit channels can carry commands or control signals, and five receive channels can support response data plus ring and validity indications. The always-enabled ROUT2B and INVALID outputs are especially useful in systems that need to observe remote signals without placing the entire transceiver into shutdown. With a 250 kbps data rate, automatic wakeup, and a 1 µA shutdown current, the device balances diagnostic capability with low idle consumption.
अनुशंसित
Security and Access-Control Equipment
The MAX3243EEUI+ can serve as the wired RS-232 interface in access-control panels, readers, and security controllers that exchange commands with a host. The five receivers provide additional input capacity for status and ring signaling, while the three drivers support outbound control paths. Its 3.0 V to 5.5 V supply range simplifies integration into mixed embedded systems, and the 250 kbps rate covers typical administrative and event traffic. The ±15 kV HBM protection rating is useful for a port connected through external cabling, although cable routing and chassis grounding remain essential.
अनुशंसित
अनुशंसित उत्पादों का सारांश
के लिए इंजीनियरिंग संदर्भ डेटा MAX3243EEUI+ — तुलना, डिज़ाइन मार्गदर्शन और अनुपालन जानकारी।
चयन गाइड
विकल्पों के साथ तुलना
| पैरामीटर | यह उत्पाद | MAX3243EEUI |
|---|---|---|
| Brand | Analog Devices | Analog Devices |
| Package | 28-pin TSSOP | 28-pin TSSOP |
| Transceiver Configuration | 3 drivers / 5 receivers | 3 drivers / 5 receivers |
| Supply Voltage Range | 3.0 V to 5.5 V | 3.0 V to 5.5 V |
| Maximum Data Rate | 250 kbps | 250 kbps |
| ESD Protection | ±15 kV HBM | ±15 kV HBM |
| Shutdown Current | 1 µA | 1 µA |
| AutoShutdown and Wakeup | Supported | Supported |
मुख्य विशेषताएँ
- Five receivers provide more input capacity than the three transmit channels (बनामMAX3238ECAI+)
- Supports a 250 kbps RS-232 data rate (बनामMAX3243EETJ+T)
- Combines low-power control with always-enabled status outputs (बनामMAX3238EEAI+)
डिज़ाइन नोट्स
Place all charge-pump capacitors and the required supply capacitors at the pins identified in the manufacturer datasheet, keeping each loop as short as practical. The MAX3243E generates bipolar RS-232 levels through internal charge-pump circuitry, so long capacitor connections can increase transient ringing and emissions. Follow the datasheet’s recommended capacitance and tolerance values rather than substituting a generic bulk-capacitor arrangement.
Route connector-facing RS-232 traces away from clocks, switching-regulator inductors, and high-speed digital nets. Keep the transceiver close to the connector and provide a low-impedance return path for cable surge currents. The ±15 kV HBM rating protects the IC’s serial pins, but ESD energy must still be directed away from sensitive logic through controlled board layout, enclosure grounding, and connector placement.
Confirm driver and receiver polarity, connector mapping, and logic thresholds before layout release. The five receiver channels may carry data, ring indication, or validity signals rather than five independent communication ports, so assigning them by function prevents firmware and hardware mismatches. Use the always-enabled ROUT2B and INVALID outputs according to the manufacturer’s timing and logic definitions.
Do not treat the MAX3243EEUI+ as a differential RS-485 transceiver or as a replacement for a MAX202 or MAX211 circuit without checking the pin map. These devices share the broader RS-232 interface category but can differ in channel count, package, control features, and external support components. The MAX3243EEUI is the closest identified same-package ordering option, while the MAX3238 and MAX3248 references use different packages or configurations.
अनुपालन जानकारी
The manufacturer product page confirms the MAX3243E family, but the available information does not establish the target component’s complete regional compliance declarations. The MAX3243EEUI+ is an interface IC rather than an automotive-qualified power device.