The MAX3465-MAX3469 are high-speed differential bus transceivers for RS-485 and RS-422 communications. They are designed to meet TIA/EIA-422-B, TIA/EIA-485-A, V.11, and X.27 standards. The transceiver complies with the PROFIBUS specification providing +2.1V minimum output level with a 54Ω load, 40Mbps data rate, and output skew less than 2ns. Each part contains one three-state differential line driver and one differential input line receiver. The devices operate from a +5V supply and feature true fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted. This enables all receiver outputs on a terminated bus to output logic highs when all transmitters are disabled.All devices feature a 1/4-standard-unit load receiver input impedance that allows 128 transceivers on the bus. Driver and receiver propagation delays are guaranteed under 20ns for multidrop, clock distribution applications. Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal-shutdown circuitry. The driver and receiver feature active-high and active-low enables, respectively, that can be connected together externally to serve as a direction control.ApplicationsHigh-Speed RS-422 CommunicationsHigh-Speed RS-485 CommunicationsIndustrial-Control Local Area NetworksLevel TranslatorsPROFIBUS Applications

The MAX3465-MAX3469 are high-speed differential bus transceivers for RS-485 and RS-422 communications. They are designed to meet TIA/EIA-422-B, TIA/EIA-485-A, V.11, and X.27 standards. The transceiver complies with the PROFIBUS specification providing +2.1V minimum output level with a 54Ω load, 40Mbps data rate, and output skew less than 2ns. Each part contains one three-state differential line driver and one differential input line receiver. The devices operate from a +5V supply and feature true fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted. This enables all receiver outputs on a terminated bus to output logic highs when all transmitters are disabled.All devices feature a 1/4-standard-unit load receiver input impedance that allows 128 transceivers on the bus. Driver and receiver propagation delays are guaranteed under 20ns for multidrop, clock distribution applications. Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal-shutdown circuitry. The driver and receiver feature active-high and active-low enables, respectively, that can be connected together externally to serve as a direction control.ApplicationsHigh-Speed RS-422 CommunicationsHigh-Speed RS-485 CommunicationsIndustrial-Control Local Area NetworksLevel TranslatorsPROFIBUS Applications

The MAX5940A/MAX5940B/MAX5940C/MAX5940D provide complete interface function for a powered device (PD) to comply with the IEEE® 802.3af standard in a power-over-ethernet system. MAX5940A/MAX5940B/MAX5940C/MAX5940D provide the PD with a detection signature, a classification signature, and an integrated isolation switch with programmable inrush current control. These devices also feature power-mode undervoltage lockout (UVLO) with wide hysteresis and power-good outputs. The MAX5940A/MAX5940B are available with an absolute maximum rating of 80V and the MAX5940C/MAX5940D are rated for an absolute maximum rating of 90V.An integrated MOSFET provides PD isolation during detection and classification. All devices guarantee a leakage current offset of less than 10µA during the detection phase. A programmable current limit prevents high inrush current during power-on. The device features power-mode UVLO with wide hysteresis and long deglitch time to compensate for twisted-pair cable resistive drop and to assure glitch-free transition between detection, classification, and power-on/-off phases.The MAX5940A/MAX5940C provide an active-high (PGOOD) open-drain output and a fixed UVLO threshold. The MAX5940B/MAX5940D provide both active-high (PGOOD) and active-low (active-low PGOOD) outputs and have an adjustable UVLO threshold with the default value compliant to the 802.3af standard. All devices are designed towork with or without an external diode bridge.The MAX5940A/MAX5940B/MAX5940C/MAX5940D are available in 8-pin SO packages and are rated over the extended temperature range of -40°C to +85°C.ApplicationsComputer TelephonyIP Phones Security CamerasWireless Access Nodes IEEE 802.3af Power Devices

The MAX5942A/MAX5942B integrate a complete powerIC for powered devices (PD) in a power-over-ethernet(PoE) system. The MAX5942A/MAX5942B provide a PDinterface and a compact DC-DC PWM controller suitablefor flyback and forward converters in either isolated ornonisolated designs.The MAX5942A/MAX5942B PD interface complies withthe IEEE™ 802.3af standard, providing the PD with adetection signature, a classification signature, and anintegrated isolation switch with programmable inrush currentcontrol. These devices also feature power-modeundervoltage lockout (UVLO) with wide hysteresis andpower-good status outputs.The MAX5942A/MAX5942B also integrate all the buildingblocks necessary for implementing DC-DC fixed-frequencyisolated power supplies. This device is acurrent-mode controller with an integrated high startupcircuit suitable for isolated telecom/industrial voltagerange power supplies. A high-voltage startup circuitallows the PWM controller to draw power directly from the18V to 67V input supply during startup. The switchingfrequency is internally trimmed to 275kHz ±10%, thusreducing magnetics and filter components. TheMAX5942A allows an 85% operating duty cycle and canbe used to implement flyback converters. The MAX5942Blimits the operating duty cycle to less than 50% and canbe used in single-ended forward converters. TheMAX5942A/MAX5942B are designed to work with or withoutan external diode bridge in front of the PD.The MAX5942A/MAX5942B are available in 16-pin SOpackages.ApplicationsComputer TelephonyInternet AppliancesIP PhonesPower Devices in Power-Over-Ethernet/Power-Over-MDISecurity CamerasWireless Access Nodes

The MAX7310 provides 8-bit parallel input/output port expansion for SMBus™-compatible and I²C-compatible applications. The MAX7310 consists of an input port register, an output port register, a polarity inversion register, a configuration register, a bus timeout register, and an SMBus/I²C-compatible serial interface. The system master can invert the MAX7310 input data by writing to the active-high polarity inversion register. The system master can enable or disable bus timeout by writing to the bus timeout register.Any of the eight I/O ports can be configured as input or output. An active-low reset input sets the eight I/Os as inputs. Three address-select pins configure one of 56 slave ID addresses.The MAX7310 is available in 16-pin thin QFN, TSSOP, and QSOP packages and is specified over the -40°C to +125°C automotive temperature range.ApplicationsCellular HandsetsDesktop Computers: MotherboardsGPIOIndustrial ControlIndustrial DisplaysInstrumentation and Test MeasurementMedical EquipmentRAID SystemsServersWhite LED Drivers

The MAX7314 I²C-compatible serial interfaced peripheral provides microprocessors with 16 I/O ports plus one output-only port and one input-only port. Each I/O port can be individually configured as either an open-draincurrent-sinking output rated at 50mA and 5.5V, or a logic input with transition detection. The output-only port can be assigned as an interrupt output for transition detection. The outputs are capable of driving LEDs, or providinglogic outputs with external resistive pullup up to 5.5V.Eight-bit PWM current control is built in for all 17 output ports. A 4-bit global control applies to all LED outputs and provides coarse adjustment of current from fully off to fully on with 14 intensity steps in between. Each output has an individual 4-bit control, which further divides the globally set current into 16 more steps. Alternatively, the current control can be configured as a single 8-bit control that sets all outputs at once.Each output has independent blink timing with two blink phases. All LEDs can be individually set to be on or off during either blink phase, or to ignore the blink control. The blink period is controlled by a clock input (up to 1kHz)on BLINK or by a register. The BLINK input can also be used as a logic control to turn the LEDs on and off, or as a general-purpose input.The MAX7314 supports hot insertion. All port pins, the active-low INT output, SDA, SCL, active-low RST, BLINK, and the slave address input ADO remain high impedance in powerdown (V+ = 0V) with up to 6V asserted upon them. The MAX7314 is controlled through a 2-wire serial interface, and uses four-level logic to allow four I²C addresses from only one select pin.ApplicationsKeypad BacklightsLCD BacklightsLED Status IndicationRelay DriversRGB LED DriversSystem I/O Ports

The MAX7315 I²C-/SMBus™-compatible serial interfaced peripheral provides microprocessors with 8 I/O ports. Each I/O port can be individually configured as either an open-drain current-sinking output rated at 50mA at 5.5V, or a logic input with transition detection. A ninth port can be used for transition detection interrupt or as a general-purpose output. The outputs are capable of directly driving LEDs, or providing logic outputs with external resistive pullup up to 5.5V.PWM current drive is integrated with 8 bits of control. Four bits are global control and apply to all LED outputs to provide coarse adjustment of current from fully off to fully on in 14 intensity steps. Each output then has individual 4-bit control, which further divides the globally set current into 16 more steps. Alternatively, the current control can be configured as a single 8-bit control that sets all outputs at once.The MAX7315 is pin and software compatible with the PCA9534 and PCA9554(A).Each output has independent blink timing with two blink phases. All LEDs can be individually set to be on or off during either blink phase, or to ignore the blink control. The blink period is controlled by a register.The MAX7315 supports hot insertion. All port pins, the active-low INT output, SDA, SCL, and the slave address inputs AD0-2 remain high impedance in power-down (V+ = 0V) with up to 6V asserted upon them.The MAX7315 is controlled through the 2-wire I²C/SMBus serial interface, and can be configured to one of 64 I²C addresses.ApplicationsCell PhonesKeypad BacklightsLaptop ComputersLCD BacklightsLED Status IndicationPortable EquipmentRGB LED Drivers

The MAX8552 highly integrated monolithic MOSFET driver can drive a pair of power MOSFETs in single or multiphase synchronous buck-converter applications that provide up to 30A output current per phase. The MAX8552 simplifies PC board layout in multiphase systems, particularly three phases and higher. High input voltages up to 24V allow the MAX8552 to be used in desktop, notebook, and server applications. Each MOSFET driver can drive 3000pF capacitive loads with only 12ns propagation delay and 11ns (typ) rise and fall times, making the MAX8552 ideal for high-frequency applications.User-programmable break-before-make circuitry prevents shoot-through currents, maximizing converter efficiency. An enable input allows total driver shutdown (The MAX8552 is available in space-saving 10-pin TDFN and µMAX packages and is specified for -40°C to +85°C operation.ApplicationsDesktops, Notebooks, and ServersMultiphase Buck ConvertersProcessor-Core Voltage RegulatorsSwitching Power SuppliesVoltage Regulator Modules (VRMs)

The MAX3030E-MAX3033E family of quad RS-422 transmitters send digital data transmission signals over twisted-pair balanced lines in accordance with TIA/EIA-422-B and ITU-T V.11 standards. All transmitter outputs are protected to ±15kV using the Human Body Model. The MAX3030E-MAX3033E are available with either a 2Mbps or 20Mbps guaranteed baud rate. The 2Mbps baud rate transmitters feature slew-rate-limiting to minimize EMI and reduce reflections caused by improperly terminated cables. The 20Mbps baud rate transmitters feature low-static current consumption (ICC The MAX3030E-MAX3033E are low-power, ESD-protected, pin-compatible upgrades to the industry-standard 26LS31 and SN75174. They are available in space-saving 16-pin TSSOP and SO packages.ApplicationsIndustrial PLCsMotor ControlTelecom BackplanesV.11/X.21 Interface

The MAX3030E-MAX3033E family of quad RS-422 transmitters send digital data transmission signals over twisted-pair balanced lines in accordance with TIA/EIA-422-B and ITU-T V.11 standards. All transmitter outputs are protected to ±15kV using the Human Body Model. The MAX3030E-MAX3033E are available with either a 2Mbps or 20Mbps guaranteed baud rate. The 2Mbps baud rate transmitters feature slew-rate-limiting to minimize EMI and reduce reflections caused by improperly terminated cables. The 20Mbps baud rate transmitters feature low-static current consumption (ICC The MAX3030E-MAX3033E are low-power, ESD-protected, pin-compatible upgrades to the industry-standard 26LS31 and SN75174. They are available in space-saving 16-pin TSSOP and SO packages.ApplicationsIndustrial PLCsMotor ControlTelecom BackplanesV.11/X.21 Interface