The MAX86140/MAX86141 are ultra-low-power, com- pletely integrated, optical data acquisition systems. On the transmitter side, the MAX86140/MAX86141 have three programmable high-current LED drivers that can be configured to drive up to six LEDs using an external 3x2:1 mux. With two MAX86140/MAX86141 devices working in master-slave mode, the LED drivers can drive up to twelve LEDs using an external 3x2:1 mux. On the receiver side, MAX86140 consists of a single optical readout channel, while the MAX86141 has two optical readout channels that can operate simultaneously. The devices have low- noise signal conditioning analog front-end (AFE) including 19-bit ADC, an industry-lead ambient light cancellation (ALC) circuit, and a picket fence detect and replace func- tion. Due to the low power consumption, compact size, ease of use, and industry-lead ambient light rejection capability of MAX86140/MAX86141, the devices are ideal for a wide variety of optical-sensing applications, such as pulse oximetry and heart rate detection.The MAX86140/MAX86141 operate on a 1.8V main supply voltage and a 3.1V to 5.5V LED driver supply voltage. Both devices support a standard SPI compatible interface and fully autonomous operation. Each device has a large 128-word built-in FIFO. The MAX86140/MAX86141 is available in compact wafer-level package (WLP) (2.048 x 1.848mm) with 0.4mm ball pitch.Introducing the MAX-HEALTH-BAND Heart Rate and Activity Monitor Wristband Health Monitoring Demo with MAX86141 Design Solution: REALLY Smart Wearables Customize Their Power Supply › Design Solution: Choose the Proper PMIC to Boost Your Optical Sensor SNR › Design Solution: Take a Weight Off Your Chest with a Wrist-Worn ECG Monitor › Design Solution: Designing for Wearable Health and Fitness? Think Inside the Box › Design Solution: Train Your Fitness Monitor to Deal with Any Lighting Conditions ›ApplicationsMuscle Oxygen Saturation (SmO2 and StO2)Optical Heart RateOptimized for Wrist, Finger, Ear, and Other LocationsOptimized Performance for High Quality PPG Signal to DetectOxygen Saturation (SpO2)Wearable Devices for Fitness, Wellness, and Medical Applications

DeepCover® embedded security solutions cloak sensitive data under multiple layers of advanced physical security to provide the most secure key storage possible.The MAXQ1061/MAXQ1062 cryptographic controller makes it fast and easy to implement full security for embedded, connected products without requiring firmware development. The MAXQ1061/MAXQ1062 coprocessor can be designed-in from the start or added to an existing design to guarantee confidentiality, authenticity, and integrity of the device. It is ideal for connected embedded devices, industrial networking, PLC, and network appliances.The embedded, comprehensive cryptographic toolbox provides key generation and storage up to full SSL/TLS/DTLS support by offering a high level of abstraction including TLS/DTLS key negotiation, ECDSA-based TLS/DTLS authentication, digital signature generation and verification, SSL/TLS/DTLS packet encryption, and MAC algorithms. It can also serve as a secure bootloader for an external generic micro controller.32KB of user-programmable EEPROM of MAXQ1061 or 8KB of MAXQ1062 securely store certificates, public keys, private and secret keys, monotonic counters, and arbitrary data. A flexible file system manages access rights for the objects. The device is controlled over a SPI or I2C interface. Life cycle management and a secure key loading protocols are provided.Cryptographic algorithms supported by the device include AES, ECC, ECDSA signature scheme, SHA, and MAC digest algorithms. The true random number generator can be used for on-chip key generation. A separate hardware AES engine over SPI allows the MAXQ1061/MAXQ1062 to function as a coprocessor for stream encryption.The advanced physical, environmental and logical protections, are designed to meet the stringent requirements of FIPS and Common Criteria EAL4+ certifications.ApplicationsInternet of Things (IoT)Portable Medical DevicesBuilding and Home AutomationSmart MeteringCertificate Distribution and ManagementSecure Access ControlElectronic Signature GenerationCybersecurity for Critical Infrastructures

The MAX31180 is a low-jitter, crystal-based clock generator with an integrated phase-locked loop (PLL) to generate spread-spectrum clock outputs from 16MHz to 134MHz. The device is pin-programmable to select the clock multiplier rate as well as the dither magnitude. The MAX31180 has a spread-spectrum disable mode and a power-down mode to conserve power.ApplicationsAutomotiveCable ModemsCell PhonesComputer PeripheralsCopiersInfotainmentPCsPrinters

The MAX4936A/MAX4937A are octal, high-voltage,transmit/receive (T/R) switches. The T/R switches arebased on a diode bridge topology, and the amount ofcurrent in the diode bridges can be programmed bythree digital inputs (S0, S1, and S2). Two control inputs(EN1 and EN2) allow enabling/disabling channels 1–4and channels 5–8, respectively. The MAX4936A includesthe T/R switch and grass-clipping diodes, performingboth transmit and receive operations. The MAX4937Aincludes just the T/R switch and performs the receiveoperation only.These devices feature low on-impedance in the entireultrasound frequency range with extremely low powerdissipation of 15mW (typ) per channel.The receive path for both devices is low impedanceduring low-voltage receive and high impedance duringhigh-voltage transmit, providing protection to the receivecircuitry. The low-voltage receive path is high bandwidth,low noise, low distortion, and low jitter.The MAX4936A SWC_ pins can be driven with high-voltagesignals using the anti-parallel diodes as grassclippers while connecting the SWB_ pins to the low-noiseamplifier (LNA). Connecting SWC_ to GND allowsthe internal anti-parallel diodes to be used as clamps.Grass-clipping diodes can then be connected to SWB_and the LNA to SWA_.Both devices are available in a small, 42-pin, 3.5mm x9mm TQFN package, and are specified over the commercial0°C to +70°C temperature range.ApplicationsHigh-Voltage Transmit and Low-Voltage IsolationMedical/Industrial ImagingUltrasound

The MAX4936A/MAX4937A are octal, high-voltage,transmit/receive (T/R) switches. The T/R switches arebased on a diode bridge topology, and the amount ofcurrent in the diode bridges can be programmed bythree digital inputs (S0, S1, and S2). Two control inputs(EN1 and EN2) allow enabling/disabling channels 1–4and channels 5–8, respectively. The MAX4936A includesthe T/R switch and grass-clipping diodes, performingboth transmit and receive operations. The MAX4937Aincludes just the T/R switch and performs the receiveoperation only.These devices feature low on-impedance in the entireultrasound frequency range with extremely low powerdissipation of 15mW (typ) per channel.The receive path for both devices is low impedanceduring low-voltage receive and high impedance duringhigh-voltage transmit, providing protection to the receivecircuitry. The low-voltage receive path is high bandwidth,low noise, low distortion, and low jitter.The MAX4936A SWC_ pins can be driven with high-voltagesignals using the anti-parallel diodes as grassclippers while connecting the SWB_ pins to the low-noiseamplifier (LNA). Connecting SWC_ to GND allowsthe internal anti-parallel diodes to be used as clamps.Grass-clipping diodes can then be connected to SWB_and the LNA to SWA_.Both devices are available in a small, 42-pin, 3.5mm x9mm TQFN package, and are specified over the commercial0°C to +70°C temperature range.ApplicationsHigh-Voltage Transmit and Low-Voltage IsolationMedical/Industrial ImagingUltrasound

The MAX5984 is a single-port, power-sourcing equipment (PSE) power controller designed for use in IEEE® 802.3af/at-compliant PSE. This device provides powered device (PD) discovery, classification, current limit, and DC and AC load-disconnect detections. The MAX5984 operates automatically without the need for any software programming and features an integrated power MOSFET and sense resistor. The device also supports new Class 5 and 2-Event classification for detection and classification of high-power PDs. The MAX5984 provides up to 40W to a single port (Class 5 enabled) and still provides high-capacitance detection for legacy PDs.The MAX5984 provides input undervoltage lockout (UVLO), input overvoltage lockout, overtemperaturedetection, output voltage slew-rate limit during startup, and LED status indication.The MAX5984 is available in a space-saving, 28-pin TQFN (5mm x 5mm) power package, and is rated for the extended (-40°C to +85°C) temperature range.ApplicationsIndustrial Automation EquipmentPoE RepeatersSingle-Port PSE End-Point ApplicationsSingle-Port PSE Power Injectors (Midspan Applications)Switches/RoutersWireless LAN Access Point/WiMAX® Base Stations

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 MAX14600–MAX14605 and MAX14618 are third-generation USB 2.0 host charger identification devices that combine USB Hi-Speed analog switches with a USB adapter emulator circuit.The devices support pass-through mode and auto mode. In charging downstream port (CDP) pass-through mode, the devices emulate the CDP function while supporting normal USB traffic. The MAX14600/MAX14603/MAX14605 have a pFET open-drain output (active-low CEN), and the MAX14601/MAX14604/MAX14618 have an nFET open-drain output (CEN) to restart the peripheral connected to the USB host.All the devices support the CDP and standard downstream port (SDP) charging during the active state (S0) and support the dedicated charging port (DCP) charging during the standby state (S3/S4/S5). The MAX14603/MAX14604/MAX14605/MAX14618 support remote wakeup in standby mode. The MAX14602/MAX14605 offer backward-compatible CDP emulation upgrade to the MAX14566E.The MAX14600–MAX14605/MAX14618 are available in an 8-pin (2mm x 2mm) TDFN package, and are specified over the -40°C to +85°C extended temperature range.ApplicationsUSB Host Data/Chargers including:-Flat-Panel Displays with USB-Game Consoles-Laptop and Desktop Computers-Media Players-USB Hubs

The MAX14630/MAX14632 are USB adapter emulators with automatic host charger identification circuitry for USB dedicated chargers.The devices allow USB wall adapters, travel chargers, and other dedicated chargers to identify themselves as a USB dedicated charger to USB devices, an Apple charger to Apple products, and a Samsung Galaxy dedicated charger port to legacy D+/D- short detection devices that use the D+ pullup of the USB transceiver.The devices feature a control input that allows for charger mode selection. The MAX14630 supports both Apple 2A and USB Battery Charger (BC) revision 1.2 specification compliant devices in Autodetection 2A mode and Samsung Galaxy Tablet 2A devices in SS 2A mode. The MAX14632 supports Autodetection 2A mode as well as Autodetection 1A mode for compatibility with most Apple and USB BCcompliant devices.The devices are available in a 5-pin (2.9mm x 1.6mm) TSOT package and are specified over the -40°C to +85°C extended temperature range.ApplicationsUniversal Chargers including iPod®/iPad®/iPhone®USB Car Chargers and Cigarette Lighter AdaptersUSB Wall Chargers and Travel Adapters