The MAX16946/MAX16947 high-voltage, high-side, current-sense LDO/switches feature internal current limiting to prevent system damage due to fault conditions. The MAX16946 provides a fixed regulated 8.5V output voltage or an adjustable 3.3V to 15V output voltage. The MAX16946 can also be configured as a switch, while the MAX16947 is only available as a switch. The input voltage range for both devices extends from 4.5V to 18V (45V tolerant), making the devices ideal for providing phantom power to remote radio-frequency low-noise amplifiers (LNAs) in automotive applications. The devices monitor the load current and provide an analog output voltage proportional to the sensed load current. Accurate internal current limit protects the input supply against both overload and short-circuit conditions. Two open-drain fault indicator outputs indicate to the microprocessor when a short circuit, an open-load condition, or a short-to-battery condition exists. An overtemperature shutdown is also indicated by means of the current-sense amplifier's output voltage. A fault-blanking feature allows the devices to ignore momentary faults such as those caused by the charging of capacitive loads during hot-swapping, preventing false alarms to the system. The devices feature short-to-battery protection to latch off the internal LDO/pass switch during a short-to-battery event. During a thermal overload, the devices reduce power dissipation by going into thermal shutdown. They include an active-low, high-voltage-compatible shutdown input to place them in low-power shutdown mode.The MAX16946 is available in thermally enhanced, 16-pin TQFN-EP and QSOP-EP packages. The MAX16947 is available in a 16-pin QSOP package. Both devices operate over the -40°C to +105°C temperature range.ApplicationsAutomotive Remote Module PowerAutomotive Safety and InfotainmentRemote LNA Phantom Power

The MAX16946/MAX16947 high-voltage, high-side, current-sense LDO/switches feature internal current limiting to prevent system damage due to fault conditions. The MAX16946 provides a fixed regulated 8.5V output voltage or an adjustable 3.3V to 15V output voltage. The MAX16946 can also be configured as a switch, while the MAX16947 is only available as a switch. The input voltage range for both devices extends from 4.5V to 18V (45V tolerant), making the devices ideal for providing phantom power to remote radio-frequency low-noise amplifiers (LNAs) in automotive applications. The devices monitor the load current and provide an analog output voltage proportional to the sensed load current. Accurate internal current limit protects the input supply against both overload and short-circuit conditions. Two open-drain fault indicator outputs indicate to the microprocessor when a short circuit, an open-load condition, or a short-to-battery condition exists. An overtemperature shutdown is also indicated by means of the current-sense amplifier's output voltage. A fault-blanking feature allows the devices to ignore momentary faults such as those caused by the charging of capacitive loads during hot-swapping, preventing false alarms to the system. The devices feature short-to-battery protection to latch off the internal LDO/pass switch during a short-to-battery event. During a thermal overload, the devices reduce power dissipation by going into thermal shutdown. They include an active-low, high-voltage-compatible shutdown input to place them in low-power shutdown mode.The MAX16946 is available in thermally enhanced, 16-pin TQFN-EP and QSOP-EP packages. The MAX16947 is available in a 16-pin QSOP package. Both devices operate over the -40°C to +105°C temperature range.ApplicationsAutomotive Remote Module PowerAutomotive Safety and InfotainmentRemote LNA Phantom Power

The MAX3815A cable equalizer automatically provides compensation for DVI™ and HDMI™ v1.3 cables. It extends the usable cable distance up to 40 meters (1.65Gbps) and 35 meters (2.25Gbps). The MAX3815A is designed to equalize signals encoded in the transition-minimized differential signaling (TMDS®) format.The MAX3815A features four CML-differential inputs and outputs (three data and one clock). It provides a loss-of-signal (LOS) output that indicates loss-of-clock signal. The outputs include a disable function. Upon LOS, thechip is powered down. For direct chip-to-chip communication, the output drivers can be switched to one-half the DVI output specification to conserve power and reduce EMI. The output drive current can also be increased to allow the use of back termination resistors for improved signal integrity. Equalization can be automatic or set to manual control for specific in-cable applications.The MAX3815A is available in a 7mm x 7mm, 48-pin TQFP-EP package and operates over a 0°C to +70°C temperature range.ApplicationsFront-Projector HDMI/DVI InputsHDMI 1.3 Deep Color SystemsHDMI/DVI-D Cable-Extender Modules and Active Cable AssembliesHigh-Definition Televisions and DisplaysLCD Computer Monitors

The MAX4936–MAX4939 are octal, high-voltage, transmit/receive (T/R) switches. The T/R switches are based on a diode bridge topology, and the amount of current in the diode bridges can be programmed through an SPI™ interface. All devices feature a latch-clear input to asynchronously turn off all T/R switches and put the device into a low-power shutdown mode. The MAX4936/MAX4938 include the T/R switch and grass-clipping diodes, performing both transmit and receive operations. The MAX4937/MAX4939 include just the T/R switch and perform the receive operation only. The MAX4936/MAX4938 transmit path is low impedance during high-voltage transmit and high impedance during low-voltage receive, providing isolation between the transmit and receive circuitry. The high-voltage transmit path is high bandwidth, low distortion, and low jitter. The receive path for all devices is low impedance during low-voltage receive and high impedance during high-voltage transmit, providing protection to the receive circuitry. The low-voltage receive path is high bandwidth, low noise, low distortion, and low jitter. Each T/R switch can be individually programmed on or off, allowing these devices to be used as receive path multiplexers also.The MAX4936/MAX4937 feature clamping diodes to protect the receiver input from voltage spikes due to leakage currents flowing through the T/R switches during transmission. The MAX4938/MAX4939 do not have clamping diodes and rely on clamping diodes integrated in the receiver front end. All the devices are available in a small, 56-pin, 5mm x 11mm TQFN package, and are specified over the commercial 0°C to +70°C temperature range.ApplicationsHigh-Voltage Transmit and Low-Voltage IsolationMedical/Industrial ImagingUltrasound

The MAX5386/MAX5388 dual, 256-tap, volatile, low- voltage linear taper digital potentiometers offer three end-to-end resistance values of 10kΩ, 50kΩ, and 100kΩ. Operating from a single +2.6V to +5.5V power supply these devices provide a low 35ppm/°C end-to-end temperature coefficient. The devices feature an SPI interface.The small package size, low supply voltage, low supply current, and automotive temperature range of the MAX5386/MAX5388 make the devices uniquely suitable for the portable consumer market and battery-backup industrial applications.The MAX5386 includes two digital potentiometers in a voltage-divider configuration. The MAX5388 includes one digital potentiometer in a voltage-divider configuration and one digital potentiometer in a variable-resistor configuration. The MAX5386/MAX5388 are specified over an extended -40°C to +125°C temperature range and are available in 16-pin, 3mm x 3mm TQFN or 10-pin, 3mm x 5mm µMAX® packages, respectively.ApplicationsAdjustable Voltage References/Linear RegulatorsLow-Voltage Battery ApplicationsMechanical Potentiometer ReplacementOffset and Gain ControlPortable Electronics

DeepCover® embedded security solutions cloak sensitive data under multiple layers of advanced physical security to provide the most secure key storage possible.The DeepCover Secure Authenticator (DS28E35) provides a highly secure solution for a host controller to authenticate peripherals based on the industry standard (FIPS 186) public-key based Elliptic Curve Digital Signature Algorithm (ECDSA). The ECDSA engine computes keys and signatures using a pseudorandom curve over a prime field according to the “Standards for Efficient Cryptography (SEC)”. The private and public key can be computed by the device or installed by the user and optionally locked. Separate memory space is set aside to store and lock a public-key certificate as it is needed to verify authenticity. In addition to ECDSA-related memory, the device has 1024 bits of user memory that is organized as four pages of 256 bits. Page protection modes include write protection, read protection, and one-time-programmable (OTP) memory emulation modes. The DS28E35 also features a one-time settable, nonvolatile 17-bit decrement-on-command counter, which can be used to keep track of the lifetime of the object to which the DS28E35 is attached. Each device has its own guaranteed unique 64-bit ROM identification number (ROM ID) that is factory programmed into the chip. This unique ROM ID is used as a fundamental input parameter for cryptographic operations and also serves as an electronic serial number within the application. The DS28E35 communicates over the single-contact 1-Wire® bus at overdrive speed. The communication follows the 1-Wire protocol with the ROM ID acting as node address in the case of a multi-device 1-Wire network.ApplicationsAuthentication of ConsumablesMedical SensorsPeripheral AuthenticationPrinter Cartridge Identification and Authentication

The LTC4270/LTC4271 chipset is a 12-port power sourcing equipment (PSE) controller designed for use in IEEE 802.3at Type 1 and Type 2 (high power) compliant Power over Ethernet (PoE) systems. Transformer-isolated communication protocol replaces expensive opto-couplers and complex isolated 3.3V supply resulting in significant BOM cost savings. The LTC4270/LTC4271 chipset delivers lowest-in-industry heat dissipation by utilizing low-RDS(ON) external MOSFETs and 0.25Ω sense resistors.Advanced power management features include per-port 12‑bit current monitoring ADCs, DAC-programmable current limit, and versatile fast shut-down of preselected ports. Advanced power management host software is available under a no-cost license. PD discovery uses a proprietary dual-mode 4-point detection mechanism ensuring excellent immunity from false PD detection. Midspan PSEs are supported with 2-event classification and a 2 second backoff timer. The LTC4270/LTC4271 includes an I2C serial interface operable up to 1MHz.The LTC4270/LTC4271 is available in multiple power grades allowing delivered PD power up to 90W.Applications PoE PSE Switches/Routers PoE PSE Midspans

The MAX13256 H-bridge transformer driver provides a simple solution for making isolated power supplies up to 10W. The device drives a transformer's primary coil with up to 300mA of current from a wide 8V to 36V DC supply. The transformer's secondary-to-primary winding ratio defines the output voltage, allowing selection of virtually any isolated output voltage.The device features adjustable current limiting, allowing indirect limiting of secondary-side load currents. The current limit of the MAX13256 is set by an external resistor. An active-low FAULT output asserts when the device detects an overtemperature or overcurrent condition. In addition, the device features a low-power mode to reduce the overall supply current to 0.65mA (typ) when the driver is not in use.The device features an internal oscillator for autonomous operation and an external clock source input to synchronize multiple MAX13256 devices and precisely set the switching frequency. Internal circuitry guarantees a fixed 50% duty cycle to prevent DC current flow through the transformer, regardless of which clock source is used.The device is available in a small 10-pin (3mm x 3mm) TDFN package and is specified over the -40°C to +125°C automotive temperature range.Applications24V PLC Supply IsolationIsolated Fieldbus InterfacesMedical EquipmentMotor ControlsPower Meters

The MAX14808/MAX14809 octal three-level/quad five-level, high-voltage (HV) pulser devices generate high-frequency HV bipolar pulses (up to ±105V) from low-voltage control logic inputs for driving piezoelectric transducers in ultrasound systems. All eight channels have embedded overvoltage-protection diodes and integrated active return-to-zero clamp. Both devices have embedded independent (floating) power supplies (FPS) and level shifters that allow signal transmission without the need for external HV capacitors. The MAX14808 also features eight integrated transmit/receive (T/R) switches. The MAX14809 does not have the T/R switch function.The devices feature two modes of operation: an octal three-level pulser mode (with integrated active return-to-zero clamp) or a quad five-level pulser mode. In octal three-level pulser mode, each channel is controlled by two logic inputs (DINN_/DINP_) and the active return to zero features half the current driving of the pulser 1A (typ). In quad five-level pulser mode, each channel is controlled by three logic inputs and the active return to zero has the same current driving of the pulser 2A (typ).The devices can operate both in clocked and transparent mode. In clocked mode, data inputs can be synchronized with a clean differential or single-ended clock to reduce phase noise associated with FPGA output signals that are detrimental for Doppler analysis. In transparent mode, the synchronization feature is disabled and output reflects the data input after a 18ns delay. Both devices feature adjustable maximum current (0.5A to 2A) to reduce power consumption when full current capability is not required.The devices feature integrated grass-clipping diodes (with low parasitic capacitance) for receive (Rx) and transmit (Tx) isolations. Both devices feature a damping circuit that can be activated as soon as the transmit burst is over. The damping circuit has a typical on-resistance of 500Ω. It fully discharges the pulser's output internal node before the grass-clipping diodes.The devices are available in a 68-pin (10mm x 10mm) TQFN package with an exposed pad and are specified over the -40°C to +85°C extended temperature range.ApplicationsIndustrial Flaw DetectionPiezoelectric DriversTest EquipmentUltrasound Medical Imaging

The MAX14808/MAX14809 octal three-level/quad five-level, high-voltage (HV) pulser devices generate high-frequency HV bipolar pulses (up to ±105V) from low-voltage control logic inputs for driving piezoelectric transducers in ultrasound systems. All eight channels have embedded overvoltage-protection diodes and integrated active return-to-zero clamp. Both devices have embedded independent (floating) power supplies (FPS) and level shifters that allow signal transmission without the need for external HV capacitors. The MAX14808 also features eight integrated transmit/receive (T/R) switches. The MAX14809 does not have the T/R switch function.The devices feature two modes of operation: an octal three-level pulser mode (with integrated active return-to-zero clamp) or a quad five-level pulser mode. In octal three-level pulser mode, each channel is controlled by two logic inputs (DINN_/DINP_) and the active return to zero features half the current driving of the pulser 1A (typ). In quad five-level pulser mode, each channel is controlled by three logic inputs and the active return to zero has the same current driving of the pulser 2A (typ).The devices can operate both in clocked and transparent mode. In clocked mode, data inputs can be synchronized with a clean differential or single-ended clock to reduce phase noise associated with FPGA output signals that are detrimental for Doppler analysis. In transparent mode, the synchronization feature is disabled and output reflects the data input after a 18ns delay. Both devices feature adjustable maximum current (0.5A to 2A) to reduce power consumption when full current capability is not required.The devices feature integrated grass-clipping diodes (with low parasitic capacitance) for receive (Rx) and transmit (Tx) isolations. Both devices feature a damping circuit that can be activated as soon as the transmit burst is over. The damping circuit has a typical on-resistance of 500Ω. It fully discharges the pulser's output internal node before the grass-clipping diodes.The devices are available in a 68-pin (10mm x 10mm) TQFN package with an exposed pad and are specified over the -40°C to +85°C extended temperature range.ApplicationsIndustrial Flaw DetectionPiezoelectric DriversTest EquipmentUltrasound Medical Imaging