Interface ICs
Subcategories
Products (3,400+)
MAX3232IDW - Dual RS-232 Transceiver, 3-5.5V | Texas Instruments
The Texas Instruments MAX3232IDW is a dual-channel RS-232 line driver and receiver operating from a 3 V to 5.5 V supply in a 16-pin SOIC package. It provides two drivers, two receivers, a dual charge-pump circuit, and ±15 kV ESD protection on all serial inputs and outputs. An RS-232 transceiver is an interface IC that converts low-voltage CMOS logic signals into RS-232-compatible levels and receives differential bipolar signals back into CMOS logic. Within the interface IC hierarchy, the MAX3232IDW belongs to the RS-232 transceiver family, supports TIA/EIA-232-F and ITU V.28 requirements, and is commonly used to connect 3.3 V or 5 V controllers to legacy serial equipment. Key features include operation from 3 V to 5.5 V, data rates up to 250 kbit/s, low supply current of 300 µA typical, and compatibility with 5 V logic. The charge-pump design generates the positive and negative voltages required for true RS-232 signaling without an external 12 V supply. Four external 0.1 µF capacitors are required for the charge-pump and voltage-regulation functions. The device combines two transmit channels with two receive channels in one package. Each driver converts a CMOS logic input into an RS-232 output, while each receiver converts an RS-232 input into a CMOS output. The internal charge pumps support both 3 V and 5 V operation, allowing the same interface design to be used across common embedded and industrial supply levels. Typical applications include serial port adapters, industrial control equipment, data acquisition systems, point-of-sale terminals, test and measurement instruments, and embedded systems communicating with legacy RS-232 peripherals. The ±15 kV ESD protection improves robustness when cables are connected or disconnected in industrial environments. For PCB layout, place the four 0.1 µF charge-pump capacitors close to their associated pins and route each RS-232 trace away from sensitive analog or high-speed digital signals. Confirm logic thresholds, connector protection, cable length, and grounding before releasing a design, especially when connecting the interface to exposed external cables. This page organizes the electrical limits, package information, verified pricing, drop-in alternatives, and application guidance for engineers evaluating the MAX3232IDW in a new or existing RS-232 design.
MAX3232IPW - 250kbps Dual RS-232 Transceiver | Texas Instruments
Texas Instruments MAX3232IPW is a dual-channel RS-232 line driver and receiver operating from 3V to 5.5V, supporting data rates up to 250kbit/s and providing ±15kV ESD protection. The device is packaged in a 16-pin TSSOP package. It combines two RS-232 drivers, two RS-232 receivers, and onboard charge-pump circuitry that produces the bipolar voltage levels required by the RS-232 interface. An RS-232 transceiver is an interface IC that bridges a low-voltage digital logic system and a serial communications link using single-ended, bipolar signaling. The MAX3232 belongs to the RS-232 interface transceiver hierarchy, where line drivers convert logic signals into RS-232 levels and receivers convert transmitted levels back into CMOS-compatible logic. Its onboard charge pumps allow operation from a single 3V to 5.5V supply rather than requiring a separate ±12V supply. The MAX3232 provides two transmit channels and two receive channels, making it appropriate for implementing a compact RS-232 port. Its maximum 250kbit/s data rate supports conventional serial-port communication while exceeding the throughput needed by many control, instrumentation, and industrial interfaces. The integrated protection is specified to ±15kV on the serial-port connection terminals, including ground, improving robustness when cables are exposed to electrostatic discharge. Internally, the charge-pump circuits generate the positive and negative voltages required by the drivers, while the receiver section provides RS-232 thresholding and noise-tolerant logic-level output. According to the manufacturer datasheet, the device meets or exceeds the requirements of TIA/EIA-232-F and ITU V.28. It also accepts 5V logic, allowing the interface to operate alongside conventional 5V digital systems. Typical applications include industrial control links, test and measurement equipment, POS terminals, security systems, and embedded serial-port designs. The dual-channel arrangement can support one full-duplex RS-232 connection or two unidirectional links, depending on how the driver and receiver pins are assigned. The 16-pin TSSOP package also supports compact surface-mount PCB layouts. When laying out the circuit, place the required external charge-pump capacitors close to their designated pins and route the RS-232 connector-side traces away from sensitive logic. Confirm that the selected external capacitors meet the device's voltage and tolerance requirements. Also verify the electrical requirements of the connected equipment before substituting a similarly packaged transceiver. This page consolidates the verified manufacturer and distributor information with practical interface-layout guidance, pin-compatible alternatives, and a parameter comparison. It is intended to accelerate component selection while keeping all unverified electrical details explicitly identified rather than inferred.
MAX3232MPWREP - 3V-5.5V Dual RS-232 Transceiver | Texas Instruments
Texas Instruments MAX3232MPWREP is a dual-channel RS-232 line transceiver with two drivers, two receivers, a dual charge-pump circuit, and ±15 kV ESD protection in a 16-pin TSSOP package. It operates from 3 V to 5.5 V and supports data rates up to 250 kbps according to the manufacturer product page. An RS-232 transceiver is the interface between a host controller and a serial-port connector. It combines transmit and receive functions on one device, translates digital logic levels to RS-232 signal levels, and includes the charge-pump circuitry required to generate the bipolar voltage used by a driver. The MAX3232 therefore belongs to the RS-232 transceiver, interface IC, communication IC, and semiconductor hierarchy. The principal features include a 3 V to 5.5 V supply range, 250 kbps operation, two line drivers, two line receivers, and pin-to-pin ±15 kV ESD protection on the serial-port connection pins, including ground. The enhanced-product ordering code identifies this variant as a high-reliability-enhanced product, making it suitable for applications that require more stringent environmental resilience than the standard commercial MAX3232 offering. The device implements two independent communication paths in one package. A host UART can transmit through either driver and receive data through either receiver, while the integrated charge pumps support RS-232 voltage levels from a single low-voltage supply. Although the analog interface tolerates the RS-232 signaling environment, the digital logic side remains compatible with ordinary CMOS-style host logic. Typical uses include industrial serial adapters, point-of-sale equipment, data-acquisition systems, industrial controls, and embedded instrumentation. The dual-channel arrangement is especially useful when a system needs both transmit and receive paths in a compact area and cannot justify separate unidirectional driver and receiver devices. Circuit design should follow the manufacturer's pin description table when assigning supply, charge-pump, driver, receiver, and ground connections. Keep external charge-pump capacitors close to their associated pins, provide the required supply decoupling, and route exposed connector-side nets away from sensitive logic where practical. Confirm the exact pin functions and thermal limits in the manufacturer datasheet before layout signoff. This page combines the device's RS-232 architecture, interface parameters, application guidance, verified-source links, and drop-in replacement analysis into a design-focused reference. It highlights package compatibility, external capacitor requirements, ESD considerations, and the differences between the enhanced and standard MAX3232 families for faster engineering selection.
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.
MAX3243CDWR - 250kbps RS-232 Transceiver | Texas Instruments
The Texas Instruments MAX3243CDWR is a multichannel RS-232 line driver and receiver with three drivers, five receivers, a maximum data rate of 250kbps, and ±15kV HBM ESD protection. It operates from a 3V to 5.5V supply and is packaged in a 28-pin SOIC for surface-mount industrial, communications, and embedded equipment. An RS-232 transceiver is an interface IC that combines a line driver, which converts TTL or CMOS logic signals into RS-232 voltage levels, with a receiver, which converts RS-232 signals back into logic levels. This integration reduces the number of external components required for serial-port interfaces and places both signal-conversion functions in one compact package. The MAX3243CDWR supports a maximum signaling rate of 250kbps while operating across a 3V to 5.5V supply range. Its three drivers support multiple outbound serial channels, and its five receivers provide additional inbound channel capacity. The integrated ±15kV HBM ESD protection helps improve system resilience when a cable port is exposed to electrostatic discharge. The device is designed for conventional RS-232 point-to-point links found in industrial control systems, data-acquisition equipment, service interfaces, and legacy peripheral connections. Because RS-232 uses unbalanced signaling, cable routing and grounding remain important even when the IC itself provides high levels of on-chip ESD protection. The 28-pin SOIC package supports automated assembly and provides separate driver, receiver, ground, and supply connections. Applications can use the additional receiver channels for modem-control signals, hardware handshaking, status inputs, or other low-speed RS-232 signaling where the system requires more receive capability than the three driver channels. When laying out a board, place the transceiver close to the connector and route each interface line directly to its assigned pin. Keep RS-232 traces away from clocks, switching-regulator nodes, and high-speed digital edges. The signal ground reference should be connected through the cable shield or according to the equipment grounding architecture, while chassis and signal grounds should remain separated where required by the interface specification. This page combines the manufacturer specifications, explicit distributor pricing, verified drop-in references, and practical PCB guidance for engineers evaluating the MAX3243CDWR. It also distinguishes documented channel, voltage, speed, protection, and package details from information that requires separate engineering confirmation.
MAX3243CUI+ - 3-5.5V 250kbps RS-232 Transceiver | Analog Devices
The Analog Devices MAX3243CUI+ is a 3/5-channel RS-232 transceiver with a 3 V to 5.5 V supply, 250 kbps signaling capability, and ±15 kV ESD protection, housed in a 28-pin TSSOP package. It combines three RS-232 drivers and five receivers with AutoShutdown, which reduces supply current to approximately 1 µA when no valid receiver signal is present. The listed 1 k-unit manufacturer price starts at $3.43 as of 2026-10-30. An RS-232 transceiver is a serial-interface semiconductor that converts logic-level signals into RS-232 line levels and converts received line levels back into digital logic. The MAX3243 belongs to the interface IC hierarchy, where it combines drivers and receivers in one package. AutoShutdown is particularly useful for battery-powered equipment because it removes the need for a separate software-controlled power path when the serial link is idle or disconnected. The principal operating features include a 3.0 V to 5.5 V supply range, operation up to 250 kbps, integrated charge-pump circuitry, and ±15 kV ESD protection on the serial interface. The device supports both 3 V and 5 V systems, allowing the same transceiver architecture to serve industrial controls, embedded equipment, and legacy RS-232 ports. Its three drivers and five receivers provide flexible channel allocation for peripheral buses, service consoles, and point-to-point links. Technically, the MAX3243 family uses an efficient on-board power supply to generate the positive and negative voltages required by RS-232 transmitters from a single supply. The verified manufacturer page identifies the MAX3243 as production, with a product datasheet at Revision 10. The MAX3243CUI+ ordering code uses the compact TSSOP-28 package, making it suitable for space-constrained industrial-control and communications boards. Typical applications include industrial serial adapters, embedded instrumentation, POS terminals, diagnostic consoles, and communications equipment requiring both transmit and receive paths. It is especially useful where automatic power reduction is valuable, such as battery-operated test instruments or systems whose RS-232 port is only active during maintenance. The 250 kbps maximum data rate supports moderate-speed command and control traffic. When laying out the circuit, preserve the recommended charge-pump capacitor connections and place bypass capacitance close to the supply pins. Keep RS-232 traces away from sensitive analog signals, provide the required protection network if exposed to user cables, and verify the receiver polarity and logic thresholds of the connected equipment. The supplied data does not include a complete pin table, so pin assignments should be confirmed against the manufacturer datasheet before layout release. This page combines the verified manufacturer specifications, distributor pricing, package information, supported drop-in candidates, comparison parameters, and practical RS-232 design guidance. It is intended to help engineers identify the correct replacement and plan power, layout, and signal-integrity requirements without relying on distributor summaries alone.
MAX3243CWI+ - 3/5 RS-232 Transceiver | Analog Devices
Analog Devices MAX3243CWI+ is a 3V-to-5.5V RS-232 transceiver with three line drivers, five line receivers, a 250 kbps data rate, and ±15 kV HBM ESD protection, housed in a 28-pin SOIC package. The device supports both 3V and 5V system rails and includes AutoShutdown, which disables the onboard charge pump and drivers when no valid receiver signal is present. An RS-232 transceiver is an interface IC that converts logic-level digital signals into RS-232 line levels and converts received RS-232 signals back into CMOS-compatible logic. This bidirectional level-conversion function places the MAX3243CWI+ between a host controller or data-processing equipment and an external serial port. Its three-driver, five-receiver arrangement is particularly suited to DE-9 serial interfaces and equipment requiring additional receive channels for status, handshake, or ring-detection signals. Key features include a 3V-to-5.5V operating range, 250 kbps maximum signaling rate, and ±15 kV ESD protection on serial-port connections. AutoShutdown helps reduce power consumption when the connected RS-232 port has no valid activity. The INVALID output remains available to report the status of received RS-232 signals, while ROUT2B provides a second receiver output for applications that need an additional input or status function. The MAX3243CWI+ uses Maxim Integrated’s RS-232 interface architecture and is offered in a 28-pin SOIC package. Its driver and receiver organization supports asymmetric port requirements without requiring five separate line-driver circuits. The 3V-to-5.5V supply range makes the device usable in both legacy 5V serial equipment and modern embedded systems operating from lower-voltage rails. Typical applications include DE-9 RS-232 ports, industrial serial adapters, point-of-sale equipment, instrumentation, data acquisition systems, and embedded control systems. In a typical design, logic-level TX and RX signals connect to the transceiver, while the protected driver outputs connect through the external DB-9 connector or another RS-232 connector. Additional receiver inputs can monitor modem-control or equipment-status lines. Designers should account for the voltage drop across the RS-232 line, use protection appropriate to the connector environment, and maintain the supply and ground connections required by the manufacturer interface guidance. The AutoShutdown behavior should also be verified against the system’s power-management strategy, especially when a disconnected or idle connector must be recognized reliably. This page consolidates verified manufacturer and distributor information, package-level alternatives, technical comparisons, and practical design guidance for engineers evaluating the MAX3243CWI+ in 3V-to-5.5V RS-232 interface designs.
MAX3243EAI+ - 3/5 RS-232 Transceiver, 235kbps | Maxim
The Maxim Integrated MAX3243EAI+ is a 3.3 V/5 V RS-232 transceiver with three line drivers, five line receivers, and a maximum data rate of 235 kbps, housed in a 28-pin SSOP package. It operates from +3 V to +5.5 V, supports automatic shutdown and wake-up, and provides enhanced electrostatic-discharge protection for connection pins. An RS-232 transceiver is an interface IC that converts between logic-level UART signals and the voltage-domain signals used by RS-232 equipment. The MAX3243 belongs to the broader EIA/TIA-232 interface family, which sits between serial communication controllers and external D-sub connectors or other RS-232 links. Its three transmitters support multiple outbound channels, while five receivers provide additional inbound or monitoring channels. The MAX3243EAI+ uses a dual charge-pump circuit to generate the voltage levels required by RS-232 transmitters. According to the Analog Devices MAX3243 data sheet, the MAX3243E family provides ±15 kV HBM and air-gap ESD protection and ±8 kV contact-discharge protection. Automatic shutdown reduces supply current to 1 µA when active communication is not required, while wake-up operation helps lower system power consumption. The device supports operation from +3 V to +5.5 V, making it suitable for systems using either 3.3 V or 5 V digital logic. Its stated maximum data rate of 235 kbps exceeds the throughput commonly required by conventional asynchronous serial ports. The 28-pin SSOP package provides a compact surface-mount solution, although the relatively long lead span and limited pin count should be considered in high-density layouts. Typical applications include multi-channel RS-232 links in industrial controllers, test equipment, point-of-sale terminals, data acquisition systems, instrumentation, and external serial-port expansion. The three drivers are useful where one controller must connect to multiple peripheral ports, while the five receivers can handle return channels or multiple incoming data sources. PCB implementation should place charge-pump capacitors and the interface-side protection network close to the device, keep RS-232 traces away from sensitive logic, and provide suitable return paths for surge current. The unused driver outputs and receiver inputs must be terminated according to the manufacturer's data sheet rather than left floating. This page consolidates verified manufacturer and distributor information, price context, pin-package details, practical interface-design guidance, and candid replacement analysis. It also distinguishes electrically similar MAX3243 variants that are not true same-package drop-ins, helping engineers avoid assumptions based only on the MAX3243 family name.
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.
MAX3243ECRHBR - 3/5 RS-232 Transceiver, 500kbps, 32-VQFN | TI
The Texas Instruments MAX3243ECRHBR is a 3 V to 5.5 V multichannel RS-232 line driver/receiver IC providing three drivers, five receivers, and a dual charge-pump supply in a 32-pin VQFN (5 mm x 5 mm) surface-mount package. It supports data rates up to 500 kbps and is qualified for operation from 0 °C to 70 °C. An RS-232 transceiver is a bidirectional interface IC that converts logic-level TTL/CMOS signals into RS-232 level voltages on transmit and back into logic levels on receive. Within the power-management and interface hierarchy, the MAX3243E family sits at the physical-layer boundary between a host UART and a cable-attached peripheral, adding level translation, noise immunity, and electrostatic-discharge (ESD) hardening that a bare UART driver pair cannot provide. Key features of the MAX3243ECRHBR include ±15 kV ESD protection on all serial pins under the human body model (HBM), ±15 kV air-gap and ±8 kV contact discharge per IEC 61000-4-2, a dual on-chip charge pump that generates the bipolar RS-232 levels from a single supply, and a 3-to-5.5 V operating range that allows direct interfacing with 3.3 V and 5 V host logic without level shifters. A single-channel shutdown pin places the device in a low-power state when the port is idle. Architecturally, the device splits its channels asymmetrically: three drivers share the charge-pump rails for a typical transmit group, while five receivers provide more receive inputs than there are transmit outputs. This suits equipment where the host must listen to several peripherals but only drives one or two lines, such as multi-drop industrial terminals and POS equipment. The wide common-mode range of the receivers allows them to interpret RS-232 signals referenced to ground even when the two ends of a long cable sit at different ground potentials. Typical applications include industrial serial consoles, barcode scanners, weighing scales, laboratory instrument control ports, point-of-sale terminals, and battery-powered handheld peripherals that still require a hardened RS-232 port. The small 5 mm square VQFN footprint also makes the device attractive for space-constrained handheld and portable designs where a TSSOP would be too long for the board outline. When laying out this device, place the charge-pump flying capacitors and the RS-232 line-side protection network close to the device, and route the driver outputs directly to the connector with a common-ground return path. Use the pin-description table in the manufacturer datasheet to assign logic-side and line-side nets, and confirm the VQFN exposed-pad soldering and thermal requirements in the package drawing section.
MAX3243EEUI+ - 3/5 RS-232 Transceiver | Analog Devices
The Analog Devices MAX3243EEUI+ is a 3.0 V to 5.5 V RS-232 transceiver with three drivers, five receivers, 250 kbps data rate, ±15 kV ESD protection, and automatic shutdown/wakeup in a 28-pin TSSOP package. 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.
MAX3243EIRHBR - 500kbps RS-232 Transceiver | Texas Instruments
The Texas Instruments MAX3243EIRHBR is a multichannel RS-232 line driver and receiver operating from 3V to 5.5V at up to 500kbps, packaged in a 32-VQFN 5x5mm package. It integrates three line drivers, five line receivers, and a dual charge-pump circuit for RS-232 signal-level conversion. An RS-232 transceiver is an interface IC that translates logic-level signals from a host, controller, or embedded processor into RS-232-compatible levels and converts returning RS-232 signals back into logic levels. It belongs to the interface IC hierarchy, where transceiver products connect digital systems to communication ports requiring greater signal range, noise immunity, and electrical protection than ordinary logic I/O provides. The MAX3243EIRHBR provides three transmit channels and five receive channels, allowing several RS-232 links to be consolidated in one device. Its dual charge-pump circuit supports single-supply operation, while the integrated charge-pump capacitors reduce external component count. The device is designed for asynchronous serial communication and meets TIA/EIA-232-F interface requirements. ESD protection is a defining feature of the MAX3243E family. According to the manufacturer product documentation, the serial-port connection pins withstand plus or minus 15kV using the HBM and IEC61000-4-2 air-gap discharge methods, plus or minus 8kV using the IEC61000-4-2 contact-discharge method. These ratings help protect connector-facing circuitry from electrostatic discharge events. Typical applications include industrial serial-port adapters, test and measurement equipment, point-of-sale terminals, data-acquisition modules, and embedded systems that connect legacy RS-232 peripherals. The combination of multiple drivers, multiple receivers, a 3V to 5.5V supply range, and protected connector pins supports compact multi-port designs where board area and component count are important. PCB layout should keep the charge-pump capacitor connections and connector-side signal paths compact and appropriately separated. Pay particular attention to exposed-pad soldering, grounding, and the relationship between external cable transients and the protected RS-232 pins. Verify the complete pin configuration in the manufacturer pin-description table before assigning signals because the orderable RHB package includes power, ground, driver, receiver, and exposed-pad connections. This page combines the manufacturer's electrical and protection ratings with package information, same-footprint alternatives, application guidance, and design-oriented comparisons. These engineering details help distinguish the MAX3243EIRHBR from lower-channel-count transceivers, alternative data-rate versions, and other 32-pin RS-232 interface families.
MAX3243EUI+ - 3.3V/5V RS-232 Transceiver | Analog Devices
Analog Devices MAX3243EUI+ is a +3V to +5.5V RS-232 transceiver with three drivers and three receivers, automatic shutdown and wake-up, full-duplex operation, and enhanced electrostatic-discharge protection in a 28-pin TSSOP package. According to the manufacturer product page, the MAX3243 family is in production and supports both 3V and 5V supply operation. An RS-232 transceiver is a serial-interface integrated circuit that converts between TTL/CMOS logic levels and the voltage-defined RS-232 signal levels used by computer serial ports and industrial equipment. The MAX3243EUI+ belongs to the interface-IC hierarchy: RS-232 transceiver → multi-channel serial-interface transceiver → communications interface IC → semiconductor. Automatic shutdown provides a practical power-management advantage when no valid receiver activity is detected. Key features include a 3V to 5.5V supply range, three transmit channels, three receive channels, AutoShutdown operation, enhanced ESD protection, and a 28-pin TSSOP package. The MAX3243E family description identifies EIA/TIA-232 and V.28/V.24 support, automatic shutdown and wake-up behavior, high data-rate capability, and enhanced electrostatic-discharge protection. These characteristics suit systems that must translate between modern digital logic and legacy RS-232 ports. The MAX3243EUI+ integrates both interface directions on one device, reducing the component count required for a multi-channel serial port. Its automatic shutdown function can reduce power consumption when the remote system is disconnected or inactive. The 28-pin TSSOP is a surface-mount package that supports conventional PCB assembly, although exact pin assignments, capacitor values, and electrical limits must be confirmed from the manufacturer datasheet before layout or replacement qualification. Typical uses include industrial control equipment, data-acquisition systems, configuration ports, service interfaces, and embedded systems that need to communicate with RS-232 peripherals. It is also appropriate for battery-powered or portable equipment where automatic shutdown can conserve energy during idle periods. In those applications, logic-level compatibility, ESD protection, and cable-receiver behavior are as important as the nominal data rate. When designing around the MAX3243EUI+, verify the complete supply range, operating temperature, absolute maximum ratings, driver slew rate, receiver thresholds, and required external charge-pump capacitors against the manufacturer datasheet. Place the interface IC close to the connector, route driver outputs toward the protected connector side, and provide a low-impedance ground return so common-mode noise does not corrupt receiver inputs. This page consolidates verified manufacturer and distributor information with practical selection guidance, parameter comparisons, and engineering-oriented interface design notes. It also distinguishes verified drop-in candidates from unresolved alternatives, helping engineers reduce sourcing risk while retaining the required 28-pin TSSOP footprint.
MAX3243EUU - 3V to 5.5V RS-232 Transceiver | Analog Devices
The Analog Devices MAX3243EUU is a multichannel RS-232 line driver and receiver operating from a 3V to 5.5V supply, with data rates up to 250 kbps and integrated protection for RS-232 transceiver applications. The MAX3243 family is designed for portable equipment, data acquisition systems, industrial controls, and battery-powered instruments where low supply voltage, automatic shutdown, and compact serial-interface integration are important. An RS-232 transceiver is a bidirectional interface IC that converts logic-level UART signals into RS-232 line levels and converts received line-level signals back into CMOS-compatible digital signals. The MAX3243 combines multiple drivers and receivers with charge-pump circuitry for ±RS-232 voltage generation, reducing the external component count compared with discrete implementations. In the MAX3243EUU, this integration supports a low-voltage system architecture without requiring a separate 5V-only transceiver. Key electrical features include a 3V to 5.5V operating supply range, multichannel driver and receiver support, and operation up to 250 kbps. The Analog Devices product page identifies the MAX3243 as a production device with AutoShutdown capability, while the TI product listing describes the family as a 3V to 5.5V multichannel 250 kbps RS-232 line driver and receiver with plus-or-minus 15 kV ESD protection. The MAX3243EUU is supplied in a 28-pin small-outline package identified by distributor listings as TSSOP-28. It is appropriate for UART bridges, USB-to-serial adapters, embedded control boards, test equipment, and industrial serial controllers. Its low-voltage operation allows direct use with 3.3V microcontrollers, provided the logic levels and supply arrangement are verified against the device data sheet. Designers should confirm the exact package pinout, exposed-pad requirements, charge-pump capacitor values, and RS-232 line-driver loading limits before layout release. Decoupling capacitors should be placed close to the supply and ground pins, while the auto-shutdown and enable functions should be checked for compatibility with the host system's power-management sequence. This page combines the verified manufacturer and distributor references, pricing information available as of 2026-10-30, package information, and practical design guidance for engineers evaluating the MAX3243EUU in low-voltage serial-interface designs.
MAX3243IDW - 250kbps 3/5 RS-232 Transceiver | Texas Instruments
Texas Instruments MAX3243IDW is a 3- to 5.5-V multichannel RS-232 line driver and receiver capable of operation up to 250 kbps, with ±15 kV Human Body Model ESD protection on bus pins. The device integrates three drivers and five receivers in a 28-pin DW SOIC package, making it suitable for multichannel serial-interface equipment. 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 equipment. It combines drivers, receivers, and often charge-pump voltage-generation circuitry into one package. This integrated approach reduces external component count and helps designers implement PC serial ports, industrial controls, data-collection equipment, and other systems that require reliable serial communication over longer cable runs. The MAX3243IDW operates from a 3 V to 5.5 V supply, allowing use in both 3.3 V and 5 V systems. Its 250 kbps signaling rate supports legacy serial-port data rates and other multichannel RS-232 links. Individual channel enable and shutdown functions provide control over transmitter and receiver activity, while AutoShutdown operation reduces supply current when no valid signal is present. The integrated charge pump supports standard RS-232 voltage generation without an external DC-DC converter. Electrical protection is a significant feature for connector-facing circuits. The MAX3243 provides ±15 kV ESD protection using the Human Body Model on RS-232 bus pins. Protection does not replace proper connector design, external surge protection, or controlled cable routing, but it adds a useful barrier against electrostatic discharge encountered during handling and field installation. Typical applications include DE-9 serial-port interfaces, industrial data acquisition, point-of-sale equipment, test and measurement systems, and embedded control systems that exchange commands or diagnostic data with RS-232 peripherals. The three-driver and five-receiver arrangement is especially useful when one controller must communicate with multiple external devices while maintaining independent transmit control. Design should account for charge-pump capacitor selection, local bypassing, unused-channel configuration, and the voltage-versus-current behavior of RS-232 drivers. Keep ground and signal routing consistent with the referenced design, place bypass and charge-pump components close to the device, and validate cable length and data rate together because both influence signal integrity and receiver margin. This product page combines the manufacturer's electrical and package information with practical interface guidance, application scenarios, parameter-level comparisons, and replacement criteria. It is intended to help engineers determine whether the MAX3243IDW meets voltage, channel-count, data-rate, ESD, package, and lifecycle requirements before committing it to an RS-232 design.
MAX3243IPW - 250kbps RS-232 Transceiver | Texas Instruments
The Texas Instruments MAX3243IPW is a 3- to 5.5-V multichannel RS-232 line driver and receiver rated for data rates up to 250 kbps, with three drivers and five receivers in a 28-pin TSSOP package. The device is designed for serial-port and other point-to-point RS-232 interfaces where several channels must share one low-voltage supply. An RS-232 transceiver is an interface IC that combines the electrical functions required to communicate between TTL or CMOS logic and RS-232 logic levels. Within the interface hierarchy, the MAX3243IPW is a multichannel RS-232 transceiver, also described as a line driver and receiver. Its driver channels convert logic-level inputs into RS-232-compatible signals, while its receiver channels convert incoming RS-232 signals into logic-level outputs. The MAX3243IPW operates from 3 V to 5.5 V, supports signaling up to 250 kbps, and includes ±15-kV ESD protection using the HBM test method on the serial-port connection pins. Three drivers and five receivers provide an asymmetric channel count suited to applications such as DE-9 serial connections. The manufacturer also describes AutoShutdown functionality and always-enabled ROUT2B and INVALID outputs for monitoring ring and valid-input status. The wider supply range allows the interface to operate from 3.3-V or 5-V system rails without a separate RS-232 transceiver supply. Multiple integrated drivers and receivers reduce the number of external interface ICs required in multi-channel equipment. Always-enabled status outputs can simplify supervision of modem or communications equipment, although their fixed operation should be checked against the system power-management architecture. Typical uses include legacy RS-232 serial ports, industrial control interfaces, data-acquisition equipment, point-of-sale terminals, and embedded systems requiring legacy peripheral connectivity. The MAX3243IPW can also complement a modern microcontroller or transceiver module when an existing enclosure or cable standard still exposes RS-232 signals. Careful signal-level, grounding, and ESD layout practices remain necessary in electrically noisy environments. For PCB design, place the device near the connector or protected interface entry point and route protected RS-232 traces away from sensitive analog and clock circuitry. Confirm that the exposed connector pins have appropriate surge and ESD protection because the integrated ±15-kV HBM rating does not eliminate the need for an engineered external protection strategy. Follow the manufacturer pin-description and layout guidance for decoupling, grounding, and protection-network placement. This product reference combines the MAX3243IPW electrical identity, verified package information, channel configuration, interface capabilities, and application-oriented engineering guidance. It also provides a framework for checking pin-compatible alternatives, understanding the limits of interface protection, and selecting between integrated transceivers, system transceivers, and newer communication architectures.
MAX3243MPWREP - 3/5 RS-232 Transceiver | Texas Instruments
The Texas Instruments MAX3243MPWREP is a 3V-to-5.5V multichannel RS-232 line driver and receiver in a 28-pin TSSOP package. It integrates three line drivers, five line receivers, and a dual charge-pump circuit, providing the electrical interface between an asynchronous communication controller and a serial connector. The device supports data rates up to 250 kbps and includes ±15 kV human-body-model ESD protection on the serial-port connection pins. An RS-232 transceiver is an interface IC that converts logic-level signals into RS-232 line levels and converts received RS-232 signals back into digital logic levels. The MAX3243 belongs to the RS-232 transceiver family, within the broader interface IC and semiconductor hierarchy. Its integrated charge pumps generate the positive and negative voltages required by RS-232, reducing the need for external discrete supply circuitry. The principal features of the MAX3243MPWREP are its three-driver, five-receiver configuration, 3V-to-5.5V supply operation, and 250 kbps data-rate capability. The 3V minimum supply voltage supports integration with modern low-voltage digital controllers, while the 5.5V maximum accommodates conventional 5V systems. Pin-to-pin ±15 kV HBM ESD protection adds robustness at exposed serial connectors. The device includes a dual charge-pump circuit to support RS-232 signal levels from a single supply. Five receivers allow multiple incoming channels to be monitored, while three drivers support outbound RS-232 connections. The asymmetric channel count makes the device suitable for designs that require more receive capability than transmit capability, such as control, monitoring, or diagnostic equipment. Typical applications include industrial serial controllers, point-of-sale terminals, instrumentation, data-collection systems, and RS-232 port expansion. The 250 kbps maximum data rate is appropriate for asynchronous control links and moderate-rate data transfers. System designers must still account for cable length, connector exposure, signal integrity, and the electrical limitations of the RS-232 standard. Decoupling capacitors should be placed close to the charge-pump and supply pins, while external protection may be needed when cables extend beyond the enclosure or connect to electrically noisy equipment. Verify the pin configuration and capacitor values in the manufacturer datasheet before layout because the dual charge-pump topology depends on correct external capacitor placement. This page combines the MAX3243MPWREP electrical characteristics, drop-in replacement options, application guidance, and practical layout considerations to support faster component selection and board-level implementation. It also provides a concise comparison of channel count, voltage range, data rate, protection, package, and temperature coverage for engineering review.
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.
MAX334EWE+ - Quad SPST High-Speed Analog Switch, 50 Ohm, 16-SOIC | Maxim Integrated
The Analog Devices MAX334EWE+ is a high-speed quad SPST analog switch IC: four independent single-pole single-throw switches with 50 ohm on-resistance packaged in a 16-pin SOIC (SOP-16), powered from +5 V to +30 V single supply or plus/minus 5 V to plus/minus 15 V split supplies with CMOS- and TTL-compatible logic inputs. An analog switch is a solid-state semiconductor device that connects or disconnects an analog signal path under digital control. The switch belongs to the multiplexer family: a single SPST switch is the simplest routing element, and four of them in one package form a quad analog switch that can connect four signal sources to four loads, sample-and-hold front ends, or guard a bus. Like all CMOS analog switches, it sits between the signal world and the digital control world, bridging analog signal conditioning and logic-level control. Key features of the MAX334EWE+ include a 50 ohm on-resistance, high switching speed, break-before-make behavior for all four channels, and logic-compatible control inputs that accept both CMOS and TTL levels. The manufacturer positions it as a direct replacement for the DG201 and DG211, offering one quarter the on-resistance and five times the speed of those earlier parts. The wide supply range accepts laboratory bench rails, industrial 24 V nominal buses, and split supplies without level shifting. Technically, the device uses CMOS switch cells with independent control inputs per channel, so each switch can be steered by a separate logic signal. Low on-resistance keeps insertion loss and load-induced error small in high-impedance measurement paths, while break-before-make sequencing prevents the momentary shorting of two driven nodes that would corrupt a measurement. The MAX334EWE+ is specified for industrial temperature grade and ships in a surface-mount SOP-16 package. Typical uses include precision sample-and-hold circuits in data acquisition systems, signal routing in test and measurement instrumentation, battery-cell and supply monitoring front ends, audio and communications signal path switching, and industrial or automotive signal multiplexing where several analog lines must be selected by a controller. When designing around this device, treat each control input as a digital signal that still requires clean rise and fall times, and keep analog traces short and shielded from the switching control pins. Confirm break-before-make timing against your acquisition system and account for input capacitance and charge injection when the switched node feeds a high-gain amplifier. This page consolidates the switch function, supply and logic compatibility, drop-in replacement options, and practical routing and layout guidance in one place, so an engineer can qualify the MAX334EWE+ for a new board or an existing design revision without cross-checking several documents.
MAX335EWG+ - 8-Channel SPST Serial Switch | Analog Devices
The Analog Devices MAX335EWG+ is an 8-channel single-pole single-throw analog switch with a serial digital interface, 150 ohm on-resistance, and operation from -15 V to +20 V supply voltage in a 24-pin WSOIC package. The device provides eight separately controlled switches that conduct equally in either direction, making it suitable for routing analog signals in test, measurement, industrial, and data-acquisition systems. An analog switch is a semiconductor interface that connects or disconnects signal paths under digital control. The MAX335 belongs to the broader CMOS analog-switch and interface-IC hierarchy, where the switch handles analog signal routing while a serial interface controls channel state. Each SPST channel provides one normally open path, allowing external circuitry to select among multiple signals without redesigning the analog path. The MAX335EWG+ features a nominal 150 ohm on-resistance, approximately 400 ns switching times, 90 dB isolation, and an industrial operating-temperature range from -40 C to +85 C. Its serial control reduces the number of external control pins required when multiple channels must be managed in a compact system. The analog signal path is designed to maintain consistent resistance across the specified signal range. Use the device when a system needs eight independently addressable SPST routes and can accept a serial command interface. A typical implementation places the switch between a sensor or measurement source and a downstream analog front end, allowing the controller to select test channels or isolate signal paths. The -15 V to +20 V supply range supports both positive and negative analog signal environments. PCB layout should keep analog traces short, provide a stable ground reference, and place decoupling capacitors close to the supply pins. The serial interface requires correct logic levels and signal timing; the manufacturer datasheet should be used for pin assignment and serial protocol details. Confirm the maximum signal voltage, current, and switching conditions before finalizing the design. This product page consolidates the MAX335EWG+ electrical specifications, package information, sourcing guidance, and practical design considerations into one reference for engineers evaluating serial-controlled analog routing.
MAX337CWI+ - Dual 8:1 CMOS Multiplexer | Analog Devices
Analog Devices MAX337CWI+ is a dual 8:1 CMOS analog multiplexer with 400 ohm on-resistance in a 28-pin SOIC package. The device routes one of eight analog inputs on each multiplexer section to a common output, providing 16 switch channels in one IC. Its low-leakage design makes it suitable for precision signal selection, measurement systems, and instrumentation where minimizing input loading is important. An analog multiplexer is a semiconductor switch that connects one selected input to a shared output. A dual 8:1 CMOS multiplexer expands two independent groups of eight inputs into two common outputs. This hierarchy places the MAX337CWI+ within analog switches, interface ICs, and general-purpose signal-routing devices. It reduces the number of external routing components while allowing one controller to select among multiple analog signals. The MAX337 family is identified as a 16-channel dual 8-channel, low-leakage CMOS analog multiplexer. According to the manufacturer product page, MAX337 is in production, and the manufacturer datasheet describes the device as a monolithic CMOS analog multiplexer. Its 8:1 configuration uses address-control inputs to select one input per section and route it to the corresponding common output. The listed 400 ohm on-resistance provides the principal quantified electrical characteristic for this exact listing. It determines the series loss and interaction between the selected source and destination when the switch is on. Low leakage is especially important when the mux precedes high-impedance analog nodes, because leakage current can create an error voltage proportional to the input source impedance. Typical uses include battery-cell monitoring, sensor multiplexing, data acquisition, automated test equipment, and laboratory instruments. The dual architecture is particularly useful when two related analog quantities must be selected independently, such as paired sensor outputs or two channels within a multichannel measurement system. The same common-output arrangement can also be used to share a downstream amplifier or converter between several inputs. Designers should treat the address controls as digital signals while paying attention to the analog signal range, source impedance, and leakage of the connected sources. Place bypass and signal-conditioning components close to the mux pins, keep analog routing away from high-current switching nodes, and use a suitable common-ground strategy. Review the manufacturer pin-description table and operating limits before finalizing the board layout. This page combines the manufacturer overview, distributor identification, package details, cross-reference results, and practical selection guidance for the MAX337CWI+. It also distinguishes a verified dual 8:1 replacement candidate from devices that use a different package or channel architecture, helping engineers narrow replacement decisions without confusing functional similarity with true drop-in compatibility.
MAX3380EEUP+ - 2/2 RS-232 Transceiver | Analog Devices
Analog Devices MAX3380EEUP+ is a 2-transmitter, 2-receiver RS-232 transceiver designed for +2.35 V to +5.5 V operation, with 15 kV ESD protection on both the RS-232 and logic pins and support for data rates up to 460 kbps. The device is offered in a 20-pin TSSOP package. An RS-232 transceiver is an interface IC that converts between single-ended logic-level signals and differential bipolar RS-232 signals. It belongs to the transceiver class, then to the broader interface IC and semiconductor hierarchy. This bidirectional interface is useful when equipment must communicate over longer cable distances, tolerate ground-offset differences, or meet the electrical characteristics associated with EIA/TIA-232 and V.28 communications. The MAX3380EEUP+ uses a low-dropout transmitter output stage and a dual charge pump. These features allow RS-232-compatible output levels from supplies below +3.1 V and down to +2.35 V without increasing supply current when the supply lies within that range. Its +5.5 V maximum operating voltage also makes it suitable for systems powered from a single lithium-ion cell or a low-voltage regulated rail. The four-driver, four-receiver naming in some listings refers to two transmit channels and two receive channels rather than four independent full-duplex ports. Both RS-232 I/O pins and logic-side pins receive enhanced electrostatic-discharge protection. Typical system-level uses include data acquisition equipment, industrial controllers, service interfaces, embedded serial ports, and instrumentation that requires a compact, low-voltage RS-232 connection. For board design, treat the transmitter outputs and receiver inputs as externally exposed communication pins even when the logic-side pins are protected. Keep the interface connector and cable path away from sensitive analog circuitry, provide the required bypass capacitance close to the supply pins, and route the differential transmission traces as a pair. The transmitter should connect to the remote RS-232 port through protection and signal-conditioning components appropriate to the required surge and ESD levels. MAX3380EEUP+ is appropriate when a board needs two RS-232 receive channels and two RS-232 transmit channels from a compact, low-power interface IC. Verify cable length, data rate, connector protection, and grounding before deployment. This page combines the product specifications, qualified package details, sourcing information, replacement guidance, and practical RS-232 design considerations into a focused engineering reference.