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MAX3051ESA+ - 3.3V 1Mbps CAN Transceiver SOIC-8 | Maxim
The Maxim Integrated MAX3051ESA+ is a +3.3V, 1Mbps, low-supply-current CAN (Controller Area Network) bus transceiver housed in an 8-pin SOIC narrow-body package. It interfaces between a CAN protocol controller and the physical differential bus wires, providing a differential transmit path to the bus and a differential receive path back to the controller. The +3.3V single-supply operation targets modern low-voltage MCUs and ASICs that cannot tolerate the legacy 5V CAN transceivers. A CAN transceiver is the physical-layer (OSI layer 1) interface between a digital CAN controller and the two-wire differential bus. It converts digital transmit/receive logic into differential voltages compliant with ISO 11898, while also providing bus-side ESD protection and common-mode tolerance. The MAX3051 belongs to the Maxim CAN transceiver family (3.3V, low-Iq) which sits inside the broader categories of LIN/CAN/FlexRay transceivers, interface ICs, and finally wired-connectivity semiconductors used in industrial automation, building control, and harsh-environment embedded networks. Key features include a 1Mbps maximum data rate in high-speed mode, programmable slew-rate control for EMI-sensitive networks, and four operating modes: high-speed, slope-control, standby, and shutdown. The shutdown and standby states draw only a few hundred microamps, making the part well suited for battery-backed or sleep-cycling nodes. The bus-side common-mode range spans -7V to +12V, well beyond the ISO 11898 minimum of -2V to +7V, allowing reliable operation in electrically noisy industrial environments with large ground shifts. The MAX3051 is fabricated on a low-power CMOS process with on-chip bus drivers that meet ISO 11898-2 physical-layer signaling. The wide common-mode window, combined with the part's ±6kV HBM ESD rating on the bus pins (per Maxim datasheet), enables robust operation in non-automotive harsh environments such as factory floor nodes, building automation backbones, and motor-drive gateways where ground-potential differences exceed ISO 11898 minimums. Typical applications include industrial CAN nodes (PLC modules, sensor hubs), building-automation networks (BACnet over CAN, HVAC controllers), motor-drive CAN command links, embedded sensor networks, and any 3.3V MCU needing CAN connectivity without the cost or power of an automotive-grade transceiver. The low Iq also suits solar or battery-powered remote nodes. When designing with the MAX3051ESA+, place 100nF supply-bypass capacitors as close as possible to VCC and route the CANH/CANL traces as a tightly-coupled 100-ohm differential pair with characteristic impedance of 120 ohms per ISO 11898. Always include a split-termination network (60 ohms + 4.7nF at each end) to suppress common-mode ringing in long stubs. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.
MAX3076EESD+T - 16Mbps RS-485/RS-422 3.3V Transceiver
The Analog Devices MAX3076EESD+T is a 3.3V RS-485/RS-422 transceiver with one driver and one receiver, a maximum data rate of 16 Mbps, and ±15 kV ESD protection in a 14-pin narrow SOIC package. It adds fail-safe receiver behavior and hot-swap capability for robust industrial communication links. The device operates from a 2.97 V to 3.63 V supply, making it suitable for 3.3 V embedded systems. An RS-485/RS-422 transceiver is an interface IC that converts logic-level signals into balanced differential bus signals and converts received differential signals back into CMOS-compatible logic. These differential interfaces belong to the broader wired-communication and interface-IC hierarchy. Their common-mode rejection and balanced signaling improve noise immunity over longer cables compared with single-ended interfaces, particularly in industrial environments containing motors, relays, and switching equipment. Key features of the MAX3076EESD+T include ±15 kV ESD protection, fail-safe receiver outputs that remain logic-high when inputs are open or shorted, and hot-swap support for connection to an active bus. The 16 Mbps maximum data rate supports both high-speed point-to-point RS-422 links and moderately high-speed RS-485 networks. The 14-pin narrow SOIC is a surface-mount package suitable for compact, space-constrained equipment. The MAX3070E through MAX3079E family provides closely related interface options. According to the Analog Devices product page, these 3.3 V devices feature one driver, one receiver, fail-safe circuitry, and ESD protection. Exact propagation-delay, receiver-threshold, and driver-loading values must be confirmed against the manufacturer datasheet before high-speed or network-specific design signoff. Typical uses include industrial sensor networks, building-automation equipment, motor-control interfaces, data-acquisition equipment, and isolated or non-isolated telemetry links. For RS-485 multidrop networks, biasing, termination, cable length, and topology must be engineered for the intended data rate. The 3.3 V supply also simplifies connection to low-voltage processors, FPGAs, and transceivers. Designers should protect the bus pins with an appropriate surge and ESD strategy, provide adequate supply decoupling, and verify receiver thresholds when nodes may be disconnected. A 120-ohm termination resistor is commonly used at appropriate cable ends, but its use depends on topology, cable impedance, and signal integrity testing. Hot-swap support does not remove the need for controlled bus connection. This page consolidates verified distributor data, manufacturer information, same-family alternatives, and practical RS-485 design guidance. It helps engineers compare replacement options while preserving the important distinctions among package, data rate, protection, and bus behavior.
MAX3078EESA+ - 3.3V RS-485/RS-422 ESD Transceiver
The Analog Devices MAX3078EESA+ is a 3.3V RS-485/RS-422 transceiver with one driver and one receiver, ±15kV ESD protection, fail-safe operation, and hot-swap capability, housed in an 8-pin SOIC package. It is designed for industrial data links where robust transient protection, low supply voltage, and reduced power consumption are important. An RS-485/RS-422 transceiver is an interface IC that converts between logic-level signals and balanced differential line signals. In the RS-485 mode, the differential bus supports communication between multiple nodes when the system is properly terminated and biased. In RS-422 mode, the device provides a balanced driver and receiver for point-to-point links. The MAX3078EESA+ is part of the broader interface-IC hierarchy and supports both standards in one compact device. Key verified features include ±15kV ESD protection on the bus-facing pins, fail-safe receiver operation that guarantees a logic-high output when receiver inputs are open or shorted, and hot-swap capability designed to eliminate false bus transitions during power-up or hot insertion. The device operates from a 2.97V to 3.63V supply range and contains one driver and one receiver. Manufacturer data describes a supply current of 800µA when unloaded or when fully loaded with the drivers disabled. The MAX3078EESA+ is suitable for industrial controllers, instrumentation links, data acquisition systems, building automation equipment, and embedded communications networks. Its 3.3V supply operation aligns with modern low-voltage digital systems, while the ESD protection and fail-safe circuitry help improve interface reliability in electrically noisy environments. The 8-pin SOIC package supports conventional surface-mount PCB assembly. When laying out a MAX3078EESA+ circuit, keep the bus traces short and controlled, provide the required termination and fail-safe bias network at the appropriate bus locations, and route high-energy transient paths away from sensitive logic. Verify the receiver and driver enable polarity against the system controller because the available control and interface details are not fully specified in the provided verified excerpts. This page combines the verified manufacturer and distributor descriptions with practical RS-485/RS-422 design guidance, package information, selection criteria, and engineering-oriented caveats. Unavailable detailed electrical limits are explicitly marked rather than inferred, allowing designers to validate them against the complete manufacturer datasheet before release to production.
MAX3086EESD+T - 10Mbps RS-485/422 Transceiver, 15kV ESD | ADI
The Analog Devices (formerly Maxim Integrated) MAX3086EESD+T is a ±15 kV ESD-protected, fail-safe, 10 Mbps RS-485/RS-422 transceiver with slew-rate-limited driver output, packaged in a 14-pin narrow-body SOIC (NSOIC) and supplied on tape-and-reel. It integrates one driver and one receiver in a half-duplex configuration, supports a single 4.75 V to 5.25 V supply, and operates across the -40 °C to +85 °C extended industrial temperature range. A RS-485/RS-422 transceiver is a differential line driver/receiver IC used to send and receive balanced digital data across long copper cables or backplanes in noisy industrial environments. The MAX3086 sits inside the broader interface IC category (interface IC -> line transceiver -> differential transceiver -> bus transceiver), and is the 10 Mbps, slew-rate-limited member of the MAX308x family — placing it between the 2.5 Mbps MAX3085 and the 115 kbps MAX3082 in the speed ladder. Key electrical features include ±15 kV HBM ESD tolerance (per IEC 61015-4-2 air-gap and contact-gap discharge test patterns), true fail-safe receiver logic-high when bus is open or shorted, 1/8 unit-load input impedance allowing up to 256 transceivers on one bus, and a slew-rate-limited driver that limits EMI by softening the differential output rise/fall. Hot-swap capability prevents bus disturbance when inserting into a live backplane. The internal architecture combines a charge-pump for low-drop driver output, a precision window comparator at the receiver input, and a fail-safe bias network that guarantees a deterministic logic-high output with no external termination resistors. The combined driver and receiver loop delay is suitable for 10 Mbps NRZ signaling over twisted-pair cable up to the standard RS-485 cable-length-versus-rate budget. Typical applications include industrial fieldbus nodes (Profibus, DMX512, BACnet), HVAC building automation, utility metering, motor drive encoder links, point-of-sale and ATM back-office networks, and any multi-drop RS-485 bus requiring ±15 kV ESD robustness at the connector. Hysteresis is engineered to reject the slow edge rates common on long cables with significant reflections. Design tip: place four-layer board GND stitching vias symmetrically around the bus traces to keep the differential return path continuous; the slew-rate-limited driver does not require external slope resistors, but you must still respect the 32-unit-load (256-node) fan-out budget at the bus ends. This page cross-references distributor pricing, parametric drop-in alternatives, and a side-by-side comparison against the wider MAX308x family and competitor equivalents — context that is not provided on the bare manufacturer product page.
MAX3095ESE+ - 10Mbps Quad RS-422/RS-485 Receiver | Analog Devices
The Analog Devices MAX3095ESE+ is a ±15kV ESD-protected, 10Mbps, 3V/5V quad RS-422/RS-485 receiver IC in a 16-pin SOIC package. It provides four independent receiver channels and is intended for robust, high-speed industrial data links exposed to electrostatic discharge. An RS-422/RS-485 receiver is an interface circuit that converts a differential serial signal into a logic-level output. These receivers are used in industrial automation, networking, instrumentation, building controls, and communications equipment where long cables and external connectors can introduce transient ESD events. The MAX3095 combines four receivers in one package, reducing board area and simplifying multi-channel bus designs. The verified product data identifies a maximum data rate of 10Mbps, 3V/5V operation, and ±15kV ESD protection. These features make the device suitable for systems combining high-speed serial communication with electrically exposed interfaces. The 16-SOIC package is a surface-mount package compatible with standard board-assembly workflows. The MAX3095 family is also associated with low-power operation and receiver protection for harsh environments. Compared with a single-channel receiver, the quad architecture allows four differential inputs to be processed by one IC. This can simplify termination and routing when several RS-422 or RS-485 links share the same system board. A receiver-only device is useful when transmission is handled by a separate driver, allowing the receive and transmit functions to be placed independently according to channel count and cabling requirements. Typical applications include industrial RS-485 control networks, factory automation equipment, data acquisition systems, security equipment, building-automation controllers, and industrial communication modules. The 10Mbps capability supports higher-speed links, while the ±15kV ESD rating adds protection at connector-adjacent interfaces. Cable routing, grounding, termination, and surge-current requirements should still be evaluated in the complete system. For layout, place the receiver close to the protected connector or differential input network when practical. Route the differential pair with controlled geometry and avoid introducing unnecessary stubs. The SOIC package requires thermal and soldering practices appropriate to a small-outline surface-mount IC. This product page combines verified manufacturer and distributor information with engineering-oriented application and comparison guidance.
MAX3097EESE+ - Triple 32Mbps RS-422/RS-485 Receiver | Analog Devices
The Analog Devices MAX3097EESE+ is a triple RS-422/RS-485 line receiver with fault detection, 32 Mbps operation, and ±15 kV ESD protection, housed in a 16-pin NSOIC package. The device operates from a 3 V to 5.5 V supply range, with the verified product description specifying 3 V/5 V operation. It accepts three differential receiver inputs and provides fault-status outputs for detecting invalid input states. A line receiver is an interface circuit that converts low-amplitude differential signals into a digital logic-level output. RS-422 and RS-485 are balanced serial-interface standards used to transmit data reliably over cables and through electrically noisy environments. The MAX3097EESE+ belongs to the receiver and interface-IC hierarchy, combining differential signaling, fault indication, and transient protection in one device. Key features include three high-speed receivers, support for both RS-422 and RS-485 signaling, ±15 kV ESD protection, and operation up to 32 Mbps. The fault-detection circuitry indicates when a receiver input is not in a valid state, allowing system software or hardware monitoring logic to identify wiring faults, idle conditions, or abnormal bus states. The 16-pin NSOIC package supports conventional surface-mount PCB assembly. The MAX3097E family is intended for industrial data links, factory equipment, communications interfaces, and other systems that use balanced differential signaling. Its three-channel architecture reduces component count when several receiver channels are required on one board. The ±15 kV ESD rating is particularly relevant to externally connected communication lines, where static discharge and cable-borne transients can damage interface circuitry. Designers should verify the receiver’s fault-status logic, supply sequencing, input termination, and cable configuration against the manufacturer datasheet before production use. Differential receiver inputs should be routed as a matched pair, with appropriate grounding and protection implemented according to the system’s cable environment. The receiver is not a transmitter, so a separate RS-485 driver is required when a design needs bidirectional bus communication. This product page consolidates verified manufacturer and distributor information, pricing references, package details, and application guidance for engineers evaluating the MAX3097EESE+. It is intended as a technical buying and design reference rather than a substitute for the complete manufacturer datasheet.
MAX3160EAP+ - 3.0-5.5V Multiprotocol Transceiver | Analog Devices
The Analog Devices MAX3160EAP+ is a 3.0V to 5.5V RS-232/RS-485/RS-422 multiprotocol transceiver with a 20-pin SSOP package. It is programmable as a two-transmitter, two-receiver RS-232 interface or as a single RS-485/RS-422 transceiver, allowing one physical interface circuit to support multiple serial protocols. The device also supports pin-selectable transmitter slew rates for RS-232 and RS-485/422 operation, helping reduce EMI and cable reflections. Analog Devices identifies the MAX3160 family as a low-power multiprotocol interface solution, with a listed 1 uA operating-current feature and data rates up to 250 kbps for suitable operation. The MAX3160EAP+ is packaged as a 20-SSOP surface-mount device. Its protocol configurability makes it useful in industrial controls, interface converters, networking peripherals, point-of-sale equipment, and security systems where a board must accommodate legacy RS-232 alongside balanced RS-485 or RS-422 links. The MAX3160 family is pin-programmable, so the same PCB can be configured differently during assembly or test. Compared with a fixed RS-232 transceiver, the MAX3160EAP+ adds RS-485/RS-422 capability and selectable slew-rate control in one interface IC. Its low operating-current positioning is important for portable and space-constrained equipment, while the SSOP footprint simplifies integration with conventional surface-mount assembly. Design decisions should confirm the selected protocol, termination requirements, cable length, data rate, and logic-level compatibility against the manufacturer datasheet.
MAX31856MUD+ Precision Thermocouple Converter | Analog Devices
The Analog Devices MAX31856MUD+ is a precision thermocouple-to-digital converter with cold-junction compensation, digital linearization, Celsius-formatted output, and a 14-TSSOP package. The verified source data identifies 0.0078125°C resolution and supports readings from -55°C to 125°C for the listed device context, with thermocouple measurements reaching as high as +1800°C. It converts thermocouple signals into digital temperature data while supporting multiple thermocouple types through device configuration. A thermocouple-to-digital converter is an interface IC that conditions a low-voltage thermoelectric voltage, performs cold-junction compensation, applies the appropriate linearization for the selected thermocouple type, and transfers temperature data to a host controller. The MAX31856 belongs to the sensor and detector interface category and sits between physical temperature sensors and digital embedded systems. Its digital interface makes temperature monitoring suitable for industrial equipment, test systems, control loops, and embedded instrumentation. The verified manufacturer result identifies cold-junction compensation, thermocouple signal digitisation, linearization, Celsius output format, and 0.0078125°C resolution as central features. The device is supplied in a 14-pin TSSOP package, with the MUD+ ordering code shown by DigiKey as a thermocouple-to-digital converter IC. The source material does not provide a complete verified set of electrical limits, SPI timing values, thermocouple input ranges for every type, or package dimensions, so those values are not inferred here. Because a thermocouple measures the temperature difference between a sensing junction and a reference junction, cold-junction compensation is essential for accurate measurements near ambient temperature. The MAX31856 handles this function internally, allowing the host system to receive compensated digital temperature data rather than raw thermocouple voltage. Digital linearization further reduces the software burden associated with converting nonlinear thermocouple voltage into temperature. Typical uses include industrial furnace monitoring, temperature-controlled processes, laboratory equipment, environmental monitoring, and embedded thermal control. In each case, the thermocouple type, wiring, cold-junction implementation, grounding strategy, and digital interface configuration must be selected according to the manufacturer's datasheet. The verified data does not identify a specific companion MCU or application reference design, so companion products are not asserted as manufacturer-recommended parts. The principal design consideration is ensuring that the selected thermocouple, input filtering, grounding, and digital interface match the system measurement range. For thermocouple signals, keeping the analog input path away from switching nodes and noisy digital return currents helps preserve measurement integrity. This page consolidates verified distributor listings, the official Analog Devices product page, and the available cross-reference information without inventing missing electrical parameters.
MAX3221EAE+ - 3V RS-232 Transceiver with AutoShutdown | Analog Devices
The Analog Devices MAX3221EAE+ is a 3V-powered, 1-driver/1-receiver RS-232 transceiver with AutoShutdown, operating from 3V to 5.5V and reaching 120 kbps in a 16-pin SSOP package. It provides one transmit driver, one receive path, automatic shutdown and wake-up, and enhanced ESD protection according to the verified manufacturer description. The device is intended for low-voltage serial interfaces where power efficiency, compact footprint, and reliable RS-232 signal translation are required. An RS-232 transceiver is an interface IC that converts between single-ended logic-level signals and the bipolar voltage levels used by RS-232 links. The MAX3221 family uses an internal charge-pump circuit to generate the RS-232 transmitter voltage from a single low-voltage supply. In the system hierarchy, it is a communication interface IC, a line-interface device, and a voltage-level translator used between host controllers and external serial equipment. Key verified characteristics include a 3V to 5.5V supply range, 120 kbps data-rate capability, 1 microamp supply-current operation in shutdown, one RS-232 driver, and one receiver. AutoShutdown reduces power use when the receiver does not detect a valid signal. The 16-SSOP package is specified as approximately 5.30 mm wide in the distributor result, making the device suitable for compact equipment designs. The MAX3221EAE+ is appropriate for embedded serial-console connections, industrial control links, point-of-sale systems, instrumentation, and USB-to-RS-232 adapters. The internal charge pump removes the need for a separate bipolar supply, while the receiver and driver provide the basic signal path between a low-voltage controller and an RS-232 connector. The tradeoff is that RS-232 is a single-ended, point-to-point interface with limited cable distance and no multidrop capability. For layout, place charge-pump capacitors and the receiver/transmitter interface components close to their associated pins, and follow the manufacturer's recommended capacitor values. Keep the RS-232 connector-side traces away from sensitive low-level logic where practical. Confirm line rates, cable length, ground continuity, and the system supply level before finalizing the design. This page combines the verified manufacturer description, distributor package information, application guidance, and comparison-oriented design notes to provide practical RS-232 transceiver information beyond a basic catalog listing.
MAX3222CPN+ - 3V RS-232 Transceiver, 1Mbps, 18-PDIP | Maxim
The Analog Devices (formerly Maxim Integrated) MAX3222CPN+ is a 3.0V to 5.5V powered, true RS-232 transceiver that integrates two line drivers, two line receivers, and a dual charge pump in a single 18-pin PDIP through-hole package. It supports data rates up to 1 Mbps (with the MAX3222/MAX3232 family) and uses only four external 0.1 uF capacitors to generate the ±5.5V RS-232 rails from a single 3V supply. The "+" suffix indicates a lead-free, RoHS-compliant shipping tube. A True RS-232 transceiver is a line driver/receiver IC that translates logic-level UART signals (0/VCC) to RS-232 voltage levels (±5V to ±15V) while also shifting external RS-232 levels back down to logic levels. It is a core sub-category of the serial-communication interface hierarchy: UART -> RS-232 transceiver -> line driver/receiver -> interface IC -> integrated circuit. The internal charge-pump voltage doubler/inverter eliminates the bulky ±12V supplies required by legacy RS-232 designs. Key features include an enhanced ESD protection of ±15 kV HBM on the RS-232 bus pins (driver outputs and receiver inputs), guaranteed 120 kbps data rate, and a low 1 uA supply current in shutdown. The MAX3222 is pin-, package-, and functionally compatible with the industry-standard MAX242, providing a low-power modern replacement for legacy designs. The MAX3222 architecture uses an internal dual charge pump (with external 0.1 uF flying and reservoir capacitors) to generate the +5.5V and -5.5V rails required by the RS-232 standard. It includes five receivers/drivers in companion parts (MAX3237 has 3 Rx / 5 Tx, MAX3241 has 5 Rx / 3 Tx) so designers can match port count to application without changing footprint. Typical applications include industrial point-of-sale terminals, networking equipment serial ports, embedded UART-to-RS-232 bridges, and legacy PC peripherals where a through-hole DIP form factor is preferred for hand-prototyping or repair. The wide 3.0V-5.5V supply range lets the same part work from a 3.3V MCU rail or a 5V logic rail. When designing with this device, place the four 0.1 uF charge-pump capacitors as close to the IC pins as possible to minimize supply ripple and meet RS-232 voltage levels under full load. For battery-powered designs, take advantage of the SHDN pin (active-low) to drop quiescent current to 1 uA between transmissions.
MAX3232CD - 2/2 RS-232 Transceiver, 250 kbit/s | Texas Instruments
The Texas Instruments MAX3232CD is a 3 V to 5.5 V multichannel RS-232 line driver and receiver with two drivers, two receivers, 250 kbit/s operation, and ±15 kV ESD protection, housed in a 16-pin SOIC package. It is designed for bidirectional serial-interface links where logic-level CMOS signals must cross a noisy RS-232 cable through level translation and electrostatic-discharge protection. An RS-232 transceiver is an interface IC that combines transmit drivers, receive buffers, and the voltage-level conversion required between low-voltage digital logic and the bipolar RS-232 signal system. The MAX3232CD belongs to the broader interface-IC hierarchy: RS-232 transceiver, communications interface, interface IC, and semiconductor. Its dual-channel arrangement suits point-to-point links, industrial-control connections, console ports, and embedded equipment where both directions of communication are required. The verified device data identifies a 3 V to 5.5 V supply range, two drivers, two receivers, operation up to 250 kbit/s, typical low supply current of 300 µA, and ±15 kV ESD protection. The interface accepts 5 V logic, while the integrated charge-pump and external-capacitor arrangement supports RS-232 signal generation without a separate external power supply. The 16-pin SOIC package provides a compact surface-mount footprint suitable for PCB-based equipment. Typical applications include RS-232 console connections, industrial serial controllers, point-of-sale equipment, test instruments, and embedded systems communicating with legacy peripherals. The 250 kbit/s capability supports substantially faster signaling than conventional low-speed serial links while retaining the standardized RS-232 voltage interface. The external charge-pump capacitors must be placed according to the manufacturer layout guidance to preserve signal integrity and ensure stable operation. When selecting MAX3232CD, verify the required package, temperature range, supply voltage, channel count, and cable-side signaling expectations. Do not substitute a similar part solely by transceiver count; check pinout, logic compatibility, propagation behavior, and the exact package suffix. The MAX3232CD is listed by distributors as a 16-SOIC, 2/2 full RS-232 transceiver, making the package and channel configuration central to drop-in design decisions. This page consolidates verified distributor pricing, source URLs, package information, interface specifications, and design guidance for engineers evaluating the MAX3232CD. It also distinguishes verified facts from fields that require datasheet confirmation before production release.
MAX3232CPE+ - 3.0V to 5.5V Dual RS-232 Transceiver | Maxim Integrated
The Maxim Integrated MAX3232CPE+ is a 3.0V to 5.5V, low-power, full RS-232 transceiver with two drivers and two receivers, data rates up to 1 Mbps, and a 16-pin PDIP package. The MAX3232CPE+ converts TTL/CMOS logic levels to and from true RS-232 levels, making it suitable for serial equipment, industrial control, and legacy PC communication. An RS-232 transceiver is an interface IC that bridges the voltage-domain difference between digital logic and the bipolar, noise-tolerant RS-232 standard. MAX3232 belongs to the RS-232 transceiver hierarchy, which sits above interface ICs and semiconductor devices. Its dual charge-pump design generates the positive and negative voltages required by true RS-232 while operating from a single low-voltage supply. The key verified features include a 3.0V minimum and 5.5V maximum supply range, operation up to 1 Mbps, two drivers and two receivers, true RS-232 operation, and four external 0.1 uF charge-pump capacitors. The MAX3232CPE+ is identified by distributors as a 16-PDIP through-hole device. One distributor result also associates the family with low-power operation, making it suitable for portable and embedded systems where supply current and board area matter. The device uses a dual charge-pump architecture with a proprietary low-dropout transmitter output stage. This architecture provides true RS-232 output levels from a single 3.0V to 5.5V supply. The required charge-pump capacitors should be placed close to their associated pins, and the external capacitor values should follow the manufacturer datasheet rather than general-purpose substitution assumptions. Typical applications include RS-232 adapters, industrial serial controllers, test equipment, POS terminals, embedded debug ports, and communication links to legacy computers or peripherals. The two-driver, two-receiver arrangement supports bidirectional point-to-point serial links when paired with the appropriate line-side protection and connector design. When designing a board, reserve a dedicated 16-pin PDIP footprint, route the charge-pump network close to the IC, and keep RS-232 traces away from sensitive analog or high-speed digital signals. Add appropriate transient protection according to the cable length and exposure to industrial transients; the supplied data does not specify an external protection component, so protection selection remains a board-level design decision. This page combines distributor pricing, verified electrical facts, source links, and engineering-oriented design guidance for engineers evaluating MAX3232CPE+ procurement and implementation.
MAX3232CPWR - 250kbps Dual RS-232 Transceiver | TI
The Texas Instruments MAX3232CPWR is a dual-channel RS-232 line driver and receiver operating from a 3 V to 5.5 V single supply, with data rates up to 250 kbit/s and ±15-kV ESD protection. It is packaged in a 16-pin TSSOP (PW) surface-mount package. The device provides two transmit channels and two receive channels for bidirectional serial-interface conversion between TTL/CMOS logic and RS-232 levels. An RS-232 transceiver is an interface IC that translates low-voltage digital logic signals into differential bipolar voltage levels used by RS-232 equipment. The MAX3232CPWR is designed for asynchronous serial communication and uses external capacitors for its charge-pump voltage conversion, avoiding an external power supply while supporting 3 V, 3.3 V, and 5 V systems. Its dual-channel architecture suits equipment with two serial ports, point-to-point links, industrial controllers, and embedded systems requiring robust line-side protection. Key features include 250 kbit/s operation, two drivers, two receivers, low typical supply current of 300 µA, 5-V logic compatibility, and ±15-kV ESD protection. The MAX3232 family meets or exceeds TIA/EIA-232-F and ITU V.28 requirements, as stated in the manufacturer datasheet. The PW package supports compact PCB layouts, while the device’s low-voltage supply range makes it suitable for modern embedded systems. The dual charge-pump architecture generates the positive and negative voltage levels required by RS-232 drivers. External capacitors are connected to the charge-pump pins, and the supply decoupling network should follow the datasheet layout. The MAX3232CPWR is a practical choice where a system needs two RS-232 channels without a separate negative power rail. Typical uses include industrial control equipment, data acquisition systems, test and measurement instruments, USB-to-RS-232 adapters, point-of-sale terminals, and embedded serial bridges. The device is also appropriate for systems requiring robust protection when the cable may be exposed to electrostatic discharge events. When laying out a MAX3232CPWR circuit, place charge-pump capacitors and supply decoupling capacitors close to their associated pins, keep the RS-232 traces away from sensitive analog or high-speed digital paths, and verify the external capacitor values against the manufacturer datasheet. The ±15-kV ESD rating does not eliminate the need for good connector protection and cable routing. This page combines verified manufacturer specifications, pricing context, cross-reference alternatives, application guidance, and practical PCB recommendations for engineers evaluating the MAX3232CPWR.
MAX3232ECDB - RS-232 Transceiver 3-5.5V ±15kV ESD | TI
The Texas Instruments MAX3232ECDB is a 2-driver, 2-receiver RS-232 line transceiver operating from a single 3V to 5.5V supply, with ±15 kV IEC ESD protection on the RS-232 bus pins, packaged in a 16-pin SSOP (DB, 5.30 mm width) for commercial 0C to +70C operation. An RS-232 transceiver is a line driver/receiver IC that converts logic-level UART signals (TTL/CMOS, 0V to VCC) into the higher-voltage RS-232 signaling levels (nominally ±5V or more) required by serial ports, modems, and industrial equipment. Within the interface IC family hierarchy, it sits alongside CAN, RS-485, and USB transceivers as a physical-layer signal-conditioning device in the broader category of communication interface components. Key features include guaranteed 250 kbps minimum data rate, a charge-pump architecture that generates the required RS-232 voltage levels using only four small 0.1 uF external capacitors, and ESD protection exceeding ±15 kV (IEC 61000-4-2 air-gap and contact discharge) plus ±15 kV human-body model on the bus terminals. The device meets or exceeds TIA/EIA-232-F requirements and operates from a single supply across the full 3.0V to 5.5V range, eliminating the need for dual ±12V rails. Technically, the MAX3232E family uses proprietary on-chip charge pumps with automatic internal voltage doubling and inversion to produce V+ and V- from the single VCC rail. Two transmitters and two receivers enable a full-duplex UART link with hardware flow control (RTS/CTS). Low receiver-enable current and a shutdown-capable architecture suit battery-powered designs. Typical applications include embedded MCU UART-to-RS-232 ports, industrial programmable logic controller (PLC) console interfaces, point-of-sale equipment, and networking equipment management ports. The E-version ESD rating makes it especially appropriate for ports exposed to human contact. Design consideration: place the four charge-pump capacitors close to pins 1-6 and use 0.1 uF ceramic parts rated at 16V or more; larger values (up to 1 uF) are acceptable but slow the pump startup slightly. This page synthesizes distributor pricing, pin-to-pin drop-in alternatives across TI and MaxLinear/Exar, and practical design notes not found in the manufacturer datasheet.
MAX3232ESE+ - Dual RS-232 Transceiver | Maxim Integrated
The Analog Devices MAX3232ESE+ is a dual RS-232 transceiver with two transmitters and two receivers, a 3.0 V to 5.5 V supply range, and operation up to 1 Mbps in a 16-pin SOIC package. It is designed for bidirectional serial-interface conversion between modern CMOS/TTL logic and RS-232 voltage levels. An RS-232 transceiver is an interface IC that converts low-voltage digital signaling into differential, bipolar RS-232-compatible levels and converts received RS-232 signals back into logic-compatible levels. The MAX3232 belongs to the broader transceiver and interface-IC hierarchy, bridging host controllers, industrial equipment, data-acquisition systems, and service ports. Key verified attributes include two driver channels, two receiver channels, full RS-232 operation, a 3.0 V to 5.5 V supply range, and data rates up to 1 Mbps. The low-power design is suitable for systems where an RS-232 connection must be retained without using a full-sized legacy driver. The 16-pin SOIC footprint supports conventional surface-mount assembly. The device is intended for applications requiring RS-232 electrical compatibility rather than differential RS-485 signaling. Its integrated transmitter and receiver sections make it useful for console connections, configuration ports, embedded control links, and equipment communication. The exact charge-pump capacitor values, receiver thresholds, propagation delays, and electrical limits are not provided in the verified web data and must be checked in the manufacturer datasheet before production design. Typical uses include low-voltage MCU serial consoles, industrial configuration interfaces, test equipment, and legacy peripheral connections. Because RS-232 is point-to-point and single-ended, cable routing, grounding, and protection practices remain important. Use ESD protection and appropriate cable-level transient protection when the connector is exposed to user or industrial environments. Designers should verify the exact MAX3232ESE+ pinout, supply decoupling requirements, capacitor selection, and logic-level compatibility from the manufacturer datasheet. This page combines distributor listings, cross-reference information, and engineering guidance; it does not substitute for the complete manufacturer datasheet for production release.
MAX3232ESE+T - 3.0-5.5V RS-232 Transceiver, 1Mbps, 16-SOIC | Maxim
The Maxim Integrated MAX3232ESE+T (now under Analog Devices / Maxim Integrated) is a 3.0 V to 5.5 V, true RS-232 transceiver with two drivers and two receivers, supporting data rates up to 1 Mbps in a 16-pin SOIC (NSOIC, 0.150 inch) package. It operates from a single 3.0 V to 5.5 V supply and integrates a high-efficiency charge pump with four external 0.1 µF capacitors to generate ±5.5 V RS-232 levels from the input rail. The device is offered on tape-and-reel (the +T is the reel indicator). An RS-232 transceiver is a line driver/receiver IC that translates logic-level (TTL/CMOS) signals from a microcontroller or UART to the +/-5 V to +/-15 V signaling required by the EIA/TIA-232 standard, and vice versa. RS-232 transceivers sit between the data terminal equipment (DTE) and data communication equipment (DCE) and form part of the physical layer of the UART/serial interface family, alongside RS-422 and RS-485 transceivers for longer-distance differential links. Key features of the MAX3232ESE+T include 1 Mbps guaranteed data rate (250 KB/s in the older 160 ns slew-rate version), low supply current of 1 mA typical, an enhanced ESD protection of +/-15 kV HBM on the RS-232 bus pins, and true RS-232 output swing with automatic power-down shutdown. It also provides a low-dropout transmitter output stage so true RS-232 levels are maintained even when VCC drops to 3.0 V. The architecture uses a regulated dual charge pump and four small 0.1 µF ceramic capacitors, eliminating the bulky +/-12 V rails and 1 µF / 10 µF pump capacitors required by classic MAX232 designs. This shrinks the BOM and PCB area and enables portable 3.3 V-only systems to drive full-spec RS-232 links without auxiliary supplies. The part is pin-compatible with the industry-standard MAX232 family. Typical applications include battery-powered serial ports on portable equipment, embedded UART-to-RS-232 bridges on 3.3 V microcontroller boards (e.g. PIC32 and STM32 designs), industrial control and point-of-sale terminals, GPS receiver interfaces, and legacy PC COM-port replacements. Designers of lithium-ion-powered products appreciate the 1 mA supply current. When designing with this part, place the four 0.1 µF charge-pump capacitors (C1-C4) as close as possible to the package and keep the RS-232 trace lengths short. Decouple VCC with 0.1 µF in parallel with 1 µF, and add a series ferrite or TVS if the link will see ESD events beyond the +/-15 kV HBM rating. Note that MAX3232ESE (slew-rate-limited, 160 ns version) is the 250 KBps part; the MAX3232E and 'E' suffix are typically the 1 Mbps variants - verify the exact suffix on the order code before committing to a 1 Mbps design. This page synthesizes distributor pricing, drop-in cross-brand alternatives (TI TRSF3232, Exar SP3232, TI TRS2023), application context not found in the datasheet alone, and an engineering-grade pinout to support sourcing, design-in, and drop-in substitution decisions.
MAX3232ESE+TG035 - 2x2 RS-232 Transceiver, 3-5.5V | Maxim
The Analog Devices Inc./Maxim Integrated MAX3232ESE+TG035 is a low-power, true RS-232 transceiver with 2 drivers and 2 receivers, operating from a 3.0V to 5.5V supply at data rates up to 1Mbps, housed in a 16-pin SOIC (N) package using only four external 0.1uF capacitors. An RS-232 transceiver is an interface IC that converts TTL/CMOS logic levels (typically 0-5V or 0-3.3V) into the RS-232 voltage convention (nominally +/-5V to +/-15V) and back, allowing microcontrollers to communicate with legacy serial ports, modems, and industrial equipment. Within the signal-chain hierarchy it belongs to interface ICs -> drivers/receivers/transceivers -> line transceivers, sitting between the UART logic pin of a processor and the physical DB-9 serial connector. Key features include the wide 3.0V to 5.5V single-supply range that supports both 3.3V and 5V systems, guaranteed 250kbps operation with 3V/1uF load and up to 1Mbps minimum data rate under standard conditions, and the proprietary charge-pump architecture requiring only four 0.1uF external capacitors instead of the large 5uF capacitors of older generation devices. Technically, the device integrates dual charge pumps with cascaded voltage doublers and inverters to generate +5.5V and -5.5V rails internally from the logic supply. The E-suffix grade is specified for -40C to +85C operation. The drivers meet or exceed EIA/TIA-232 and V.28 requirements, and the receivers feature a 0.5V input threshold with 5V-tolerant operation and schmitt-trigger hysteresis for noise immunity. Typical applications include industrial fieldbus adapters, point-of-sale terminals, battery-powered instrumentation with DB-9 debug ports, and legacy PC serial maintenance interfaces. The TG035 suffix identifies the tape-and-reel packaging variant for automated pick-and-place assembly. Design consideration: use 0.1uF charge-pump capacitors rated at 16V or higher and place them close to the IC pins; larger capacitors (1uF) are only needed when running near the 1Mbps rate at 3.3V. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
MAX3238EAI+ - 3-5.5V RS-232 Transceiver with AutoShutdown Plus | ADI
The Analog Devices (formerly Maxim Integrated) MAX3238EAI+ is a true RS-232 transceiver operating from a single +3.0V to +5.5V supply in a 28-pin SSOP package. Per the Analog Devices datasheet, the device integrates 5 drivers and 3 receivers, supports data rates up to 250 kbps, and features the proprietary AutoShutdown Plus mode that drops supply current to 1 uA when the connected RS-232 cable is not in use. The internal dual charge-pump with four small 0.1 uF external capacitors generates the +/-5.5V RS-232 signal levels directly from a 3.3V or 5V logic supply, eliminating the need for a separate +-12V rail. An RS-232 transceiver is a line driver/receiver IC that translates logic-level UART signals (0V/3.3V or 0V/5V) into the +-5V to +-15V swing defined by the EIA/TIA-232 standard, providing the voltage translation and noise immunity required to communicate with PCs, modems, and legacy industrial equipment over cables up to 15 meters. The MAX3238EAI+ belongs to the multi-channel RS-232 transceiver category (part of the larger UART-to-RS232 interface transceiver hierarchy) within the wired communication IC market. Key features include 1 uA AutoShutdown Plus supply current, 250 kbps guaranteed data rate, integrated charge-pump requiring only four 0.1 uF capacitors, and compatibility with EIA/TIA-232 and V.28/V.24 standards. The IC also provides INVALID logic output to signal when receivers are out of range, plus FORCEON and FORCEOFF pins for manual shutdown control. The MAX3238EAI+ is the non-ESD version; the MAX3238E variant adds +/-15 kV IEC 61000-4-2 air-gap ESD protection on transceiver pins. The architecture pairs a switched-capacitor DC-DC converter (charge pump) that doubles and inverts the supply, with five RS-232 drivers and three RS-232 receivers. Compared with the older MAX232 family, the MAX3238EAI+ adds the AutoShutdown Plus feature, reducing quiescent current from typical 1 mA to 1 uA when no valid RS-232 signal is present - critical for battery-powered portable equipment. Typical applications include notebook and sub-notebook computers, PDAs, hand-held terminals, battery-powered point-of-sale equipment, and any portable system that needs an EIA/TIA-232 serial port running directly from a 3.3V or 5V battery. When designing with this part, place the four charge-pump capacitors as close to the IC as possible, use 0.1 uF ceramic with X7R or better dielectric, and tie unused driver inputs to GND through 100 kohm resistors to prevent supply-current oscillation. This page synthesizes distributor pricing, validated drop-in alternatives (MAX3238E family variants and TI MAX3238E), and practical design notes that complement the manufacturer datasheet.
MAX3241CAI+ - 3V-5.5V RS-232 Transceiver, 1Mbps | Analog Devices
The Analog Devices MAX3241CAI+ is a 3.0V to 5.5V low-power true RS-232 transceiver supporting data rates up to 1Mbps, packaged in a 28-pin SSOP (5.30 mm body width). The device integrates three line drivers and five line receivers in a single IC, with a dual charge-pump architecture that requires only four external 0.1uF capacitors, eliminating the need for a bipolar ±12V supply. A RS-232 transceiver is a type of line driver/receiver interface IC that converts logic-level (TTL/CMOS) signals to/from the bipolar ±5V to ±15V voltage swings required by the EIA/TIA-232-E standard. It belongs to the broader category of serial interface ICs (RS-232, RS-422, RS-485, UART transceivers), which sit between a microcontroller UART and the physical cable in point-to-point or multipoint data links. Charge-pump transceivers like the MAX3241 family simplify system design by generating the required transmitter output voltages internally from a single low-voltage rail. Key features include a 1Mbps guaranteed data rate (250kbps in the standard mode, up to 1Mbps with low-ESR capacitors), always-active extra receiver outputs for monitoring external peripherals, ±15kV ESD protection on transmitter outputs and receiver inputs (HBM), and an automatic shutdown mode that drops supply current to 1uA while keeping one receiver active. The always-on monitoring receivers (R1 and R2 extra outputs) make this part especially useful in portable and battery-powered designs that must wake the host on cable or peripheral activity. The MAX3241 uses a low-dropout transmitter output stage that maintains true RS-232-compliant output levels (±5V minimum) even when operating from a discharged battery, together with an internal dual charge pump that generates the positive and negative supplies from a single 3.0V to 5.5V rail. Four small 0.1uF external capacitors provide the pump energy storage, reducing BOM cost and board area versus ±12V solutions. Typical applications include battery-powered point-of-sale terminals, industrial handheld instrumentation, networking equipment (routers, switches), laptop and notebook serial ports, cellular phone data cables, and any embedded system requiring a TIA/EIA-232-E compliant UART link from a single low-voltage logic supply. When designing with this device, place the four 0.1uF charge-pump capacitors as close as possible to the IC pins and use a low-ESR ceramic type to achieve the 1Mbps data rate. Add bulk decoupling (0.1uF + 1uF) on VCC near the device to suppress supply noise. Verify that downstream receivers tolerate the MAX3241's ±5V minimum output swing if your cable is unusually long. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
MAX3243ECAI+ - 3V/5V 250kbps RS-232 Transceiver
The Maxim Integrated MAX3243ECAI+ is a 3V-powered EIA/TIA-232 and V.28/V.24 communications interface with three drivers, five receivers, automatic shutdown/wakeup, high data-rate operation, and enhanced electrostatic-discharge protection. It operates from 3.0V to 5.5V and supports data rates up to 250kbps. The device is packaged in a 28-pin SSOP, making it suitable for compact RS-232 equipment designs. An RS-232 transceiver is an interface IC that converts between digital logic-level signals and RS-232 voltage levels. The MAX3243 family belongs to the interface-IC hierarchy and is used where a UART or other digital controller must communicate with a PC, terminal, modem, or other RS-232 equipment. Its multiple drivers and receivers support both standard serial links and additional status or control signals. Key features include automatic shutdown when no valid receiver signal is detected, automatic wakeup when a valid signal returns, and enhanced ESD protection. The manufacturer describes protection to ±15kV using the air-gap discharge test and ±8kV using the contact-discharge test. The available data also identifies the device as a 3/5 transceiver with a 250kbps data-rate capability. The MAX3243E architecture is intended for low-power serial-interface systems. Automatic shutdown can reduce supply consumption when the RS-232 connection is idle, while wakeup allows the interface to reactivate without a continuously active supply state. The device is designed for 3V-powered equipment where RS-232 voltage generation and signal conditioning are required despite low logic supply voltage. Typical applications include PC serial-port interfaces, industrial control equipment, data acquisition systems, point-of-sale terminals, and embedded serial adapters. The combination of multiple drivers, five receivers, automatic power management, and ESD protection supports both data transfer and hardware status signaling in compact embedded systems. Designers should verify the exact pin assignments, external charge-pump capacitors, logic levels, and RS-232 line requirements against the manufacturer datasheet. PCB layout should keep the interface traces short, provide suitable return paths, and account for the elevated RS-232 voltage levels at the driver outputs.
MAX3245ECAI+ - 1Mbps 3/5 RS-232 Transceiver | Analog Devices
The Analog Devices MAX3245ECAI+ is a 3.0V-to-5.5V, ±15kV ESD-protected RS-232 transceiver with three drivers, five receivers, 1Mbps data rate, 1uA shutdown current, and a 28-pin SSOP package. An RS-232 transceiver is an interface IC that converts between complementary logic-level signals and the voltage-defined bipolar signaling used by RS-232 equipment. It belongs to the transceiver class within interface ICs, bridging UART, microcomputer, industrial-control, and communications systems. The MAX3245 family supports EIA/TIA-232 and V.28/V.24 communication interfaces while reducing the number of external components needed for a practical RS-232 port. Three driver channels and five receiver channels support multi-drop or multi-peripheral point-to-point arrangements. Its 1Mbps maximum data rate is suitable for moderate-speed serial links, and the ±15kV ESD rating adds protection for exposed connector-facing circuitry. The 3.0V-to-5.5V supply range accommodates both 3.3V and 5V system rails. AutoShutdown Plus provides low-power behavior for systems where power consumption matters during idle periods. The MAX3245ECAI+ uses the MAX3245E device family and is identified with the E suffix, 28-pin SSOP package, and industrial-temperature ordering code in the supplied distributor data. The verified distributor listings describe the device as a full RS-232 transceiver with three drivers and five receivers. The exact internal channel pinout, electrical limits, charge-pump capacitor requirements, and package dimensions require confirmation from the manufacturer datasheet before layout or replacement approval. Typical uses include USB-to-RS-232 adapters, industrial serial consoles, instrumentation, data acquisition, embedded control boards, and service ports. In each case, the transceiver provides the physical-layer conversion while the attached UART or processor handles framing and protocol software. The 1uA shutdown specification can reduce standby current when the port is not actively used, provided the AutoShutdown Plus control and external network are configured correctly. For PCB design, place the device close to the RS-232 connector, route driver and receiver traces away from sensitive analog or high-speed digital signals, and verify the required external charge-pump capacitors against the datasheet. This page combines verified distributor specifications, source traceability, replacement analysis, and application guidance; it does not invent unprovided pin assignments or pricing values.
MAX33040EAKA+ - +3.3V 5Mbps CAN Transceiver, ±40V Fault, SOT-23-8 | Maxim Integrated
The Maxim Integrated MAX33040EAKA+ is a +3.3V control area network (CAN) bus transceiver with integrated overvoltage and ESD protection, housed in an 8-pin SOT-23 package. It supports data rates up to 5 Mbps, offers ±40V fault protection on the CANH and CANL bus pins, ±40 kV ESD HBM protection, and ±25V common-mode range, exceeding the ISO 11898-2 CAN physical-layer standard. A CAN transceiver (also called a CAN physical-layer device) sits between a microcontroller's CAN protocol controller and the differential CAN bus wires. It converts the microcontroller's digital TX/RX logic levels into the differential dominant/recessive voltages defined by ISO 11898-2, and simultaneously protects the sensitive MCU side from harsh automotive and industrial bus transients. Within the broader hierarchy, a CAN transceiver falls under Interface ICs > Wired Communication > CAN/LIN transceivers. Key features include a 3V to 3.6V single-supply operating range, low-current standby and silent modes, hot-plug capability, slope control for limited-data-rate applications, and TXD dominant-timeout to prevent bus lockup from a stuck dominant node. The SOT-23-8 footprint occupies roughly 9 mm² of board area, making it one of the smallest isolated-fault CAN transceivers available. Internally the device combines a differential CAN driver/receiver pair with TVS-based fault clamps and an ESD cell rated to ±40 kV HBM. The wide ±25V CMR allows it to reject large ground-shift noise typical of long industrial cables and 12V/24V battery-powered equipment, while the ±40V fault tolerance survives load-dump and jump-start events far beyond the ISO 7637 pulse ratings. Typical applications include building automation gateways, industrial drones and motor controllers, factory-floor sensors, instrumentation data links, service and educational robots, and any 3.3V MCU-based system that must communicate reliably over CAN. Its small SOT-23-8 package and integrated ±40V/±40kV protection eliminate the need for external TVS diodes, common-mode chokes, and isolation in many designs. When designing with the MAX33040EAKA+, observe the bus-termination requirement of two 120 Ω resistors (one at each end of the bus) and place a 100 nF decoupling capacitor as close as possible to the VCC pin. The SLP pin can be tied high for low-speed, slope-controlled operation or left open for normal high-speed mode.
MAX3387EEUG+ - 3V RS-232 Transceiver, 250kbps, ±15kV ESD | Maxim
The Analog Devices (formerly Maxim Integrated) MAX3387EEUG+ is a 3V-powered, ±15kV ESD-protected RS-232 transceiver with three drivers and three receivers, housed in a 24-pin TSSOP package. It supports data rates up to 250 kbps, complies with EIA/TIA-232 and V.28/V.24 standards, and integrates a charge pump to generate the ±5.5V RS-232 levels from a single 3.0V to 5.5V supply. The 'E' suffix indicates the enhanced AutoShutdown Plus mode that reduces supply current to 1 µA typical when no valid cable is connected. An RS-232 transceiver is a line driver/receiver IC that translates between TTL/CMOS logic levels (0-3.3V) on the UART side and the bipolar ±5V to ±15V signal levels required by the legacy RS-232 standard on the cable side. RS-232 transceivers sit at the physical layer of serial communication and remain ubiquitous in point-of-sale terminals, industrial equipment, legacy PC peripherals, and embedded debug ports despite being superseded by USB and Ethernet in many consumer applications. Key features include ±15kV ESD protection on the RS-232 bus pins (IEC 61000-4-2 Air Gap), an integrated dual charge pump requiring only four small 0.1µF external capacitors, and an AutoShutdown Plus mode that automatically disables the charge pump and receivers when the cable is disconnected. The device operates from a single 3.0V to 5.5V supply and includes three active-low INVALID outputs for system monitoring. The MAX3387EEUG+ uses a proprietary low-power charge pump architecture combined with Maxim's AutoShutdown Plus logic, achieving 1 µA typical supply current in shutdown while still supporting 250 kbps data rates. The dual charge pump generates +7V and -7V from the input rail using only flying capacitors, eliminating the need for a ±12V system supply. Typical applications include PDA and cell phone data cables, palmtop computers, battery-powered equipment, embedded industrial controllers, GPS receivers, and point-of-sale (POS) terminals. Its single-supply 3V operation makes it ideal for portable, battery-powered designs where ±12V rails are unavailable. When designing with this device, place the four charge-pump capacitors (typically 0.1µF ceramic) as close as possible to the C1+, C1-, C2+, and V+ pins. Ensure the ESD-protected bus traces are kept short and routed away from sensitive analog signals. For systems that can tolerate a slightly larger TSSOP, the MAX3387ECUG+ offers a commercial 0°C to +70°C temperature range as an alternative. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
MAX338CEE+ - 8:1 Low-Leakage CMOS Analog Mux | Analog Devices
The Analog Devices MAX338CEE+ is an 8-channel, low-leakage CMOS analog multiplexer with a 1 Circuit 8:1 configuration, 400 ohm on-resistance, and a 16-QSOP package. According to the manufacturer product data, the device connects one of eight inputs to a common output, making it suitable for routing external analog signals in test, measurement, control, and communication systems. The verified listing identifies a single +4.5 V to +30 V supply or dual supplies of ±4.5 V to ±20 V. An analog multiplexer is an analog switch device that selects one signal path among multiple inputs and connects it to a shared output. The MAX338 family is positioned as a low-leakage CMOS analog multiplexer family, with the MAX338 providing eight channels and the related MAX339 providing dual four-channel operation. This hierarchy places the part within analog switches, multiplexers, interface ICs, and broader signal-routing systems. The verified MAX338CEE+ data specifies 400 ohm on-resistance and an 8:1 topology. Analog Devices identifies the MAX338 and MAX339 as pin-compatible upgrades for the industry-standard DG508A and DG509A families. The low-leakage characteristic is useful when source impedance is high, because leakage through an inactive channel can otherwise create measurement errors or interfere with small-signal nodes. The device also supports both single-supply and dual-supply operation, allowing integration into systems with different reference and bias arrangements. Typical uses include data acquisition, automated test equipment, sensor multiplexing, analog signal routing, sample-and-hold systems, and industrial control interfaces. The 8:1 arrangement reduces the number of physical connections required when a controller must inspect several analog sources through one downstream converter or measurement channel. Designers should verify signal amplitude, supply polarity, control logic, switching timing, and package footprint against their particular system before production use. A key design consideration is keeping unused analog inputs, control pins, and supply rails within the manufacturer's specified operating limits. PCB routing should minimize trace resistance and capacitance around high-impedance signal nodes, while grounding and decoupling should follow the datasheet recommendations. This page summarizes verified product, distributor, and manufacturer information; application suitability still depends on the complete electrical specification set.