MAXIM Manuals

The MAX522 is a dual-channel 8-bit digital-to-analog converter with low power consumption and a compact SO package. It can be used for voltage adjustment, current source, bias control, and VCO tuning.

The document introduces the characteristics of MAX481, MAX483, MAX485, MAX487–MAX491, and MAX1487, including working voltage, supply current, data transmission rate, etc.

MAX4754/MAX4755/MAX4756 are low on-resistance analog switches that can be used to switch audio or data signals. They operate from a single +1.8V to +5.5V power supply and feature low RON (0.5Ω) audio switches capable of handling full swing signals.

The MXL1013/MXL1014 is a high-precision dual/quad op amp from Maxim with a typical offset voltage of 40µV, 0.3µV/°C drift and 117dB CMRR and 120dB PSRR.

The MAX1945R/MAX1945S high-efficiency pulse-width modulation (PWM) switching regulators deliver up to 6A of output current. The devices operate from an input supply range of 2.6V to 5.5V and provide selectable output voltages of 1.8V, 2.5V, and adjustable output voltages from 0.8V to 85% of the supply voltage. With VCC at 3.3V/5V, the input voltage can be as low as 2.25V. The MAX1945R/MAX1945S are ideal for on-board post-regulation applications. Total output voltage error is less than ±1% over load, line, and temperature. The MAX1945R/MAX1945S operate at a selectable fixed frequency (500kHz or 1MHz) or can be synchronized to an external clock (400kHz to 1.2MHz). The high operating frequency minimizes the size of external components. The high bandwidth of the internal error amplifier provides excellent transient response. The MAX1945R/MAX1945S have internal dual N-channel MOSFETs to lower heat dissipation at heavy loads. Two MAX1945R/MAX1945Ss can operate 180 degrees out-of-phase of each other to minimize input capacitance. The devices provide output voltage margining for board-level testing. The MAX1945R provides a ±4% voltage margining. The MAX1945S provides a ±9% voltage margining. The MAX1945R/MAX1945S are available in 28-pin TSSOP-EP packages and are specified over the -40°C to +85°C industrial temperature range. An evaluation kit is available to speed designs.

This file introduces the features of 80C51 series compatible 80C52, including 80C52 compatible 8051 pin and instruction set, four 8-bit I/O ports, three 16-bit timers/counters, 256 bytes of on-chip memory, 16KB of program memory, 1KB of additional on-chip SRAM for MOVX, ROMSIZE feature selects internal ROM size from 0 to 16KB, allows access to entire external memory mapping, dynamically adjustable by software, useful as boot block for external flash, high-speed architecture, 4 clocks/machine cycle(8051=12), runs DC to 33MHz clock rates, single-cycle instruction in 121ns, dual data pointer, optional variable length MOVX to access fast/slow RAM/peripherals, programmable clock source to save power, CPU runs from (crystal/64) or (crystal/1024), provides automatic hardware and software exit, EMI reduction mode disables ALE, two full-duplex hardware serial ports, high integration controller includes: power fail recovery, on-chip oscillator, on-chip power management, on-chip power monitor, on-chip reset, on-chip EEPROM, on-chip flash, on-chip RAM, on-chip I/O.

The DS80C390 is a fast 8051-compatible microprocessor with dual CAN 2.0B controllers. It executes 8051 instructions up to 3X faster than the original for the same crystal speed.

The DS1602 is a real-time clock/elapsed time counter designed to count seconds when VCC power is applied and continually count seconds under battery backup power with an accuracy of two 32-bit counters. The counters can track seconds for over 125 years. It can count seconds from the time the battery is attached until VBAT is less than 2.5V. It can also count seconds while VCC is above VTP and retain the count in the absence of VCC under battery backup power. The clear function resets the selected counter to 0. The read/write serial port affords low pin count. The maximum current drain is less than 1µA from the VBAT pin when the serial port is disabled. It uses a one byte protocol to define read/write, counter address, and software clear function. It is available in an 8-pin DIP or optional 8-pin SOIC package. It operates in a temperature range of -40°C to +85°C. It can operate with reduced performance down to VCC = 2.5V. It is recognized by Underwriters Laboratory (UL).

The DS87C520/DS83C520 is a high-integration 80C52 compatible microcontroller with four 8-bit I/O ports, three 16-bit timers/counters, 256 bytes of on-chip RAM and 16KB of program memory.

DS1603 is a dual counter real-time clock/elapsed time counter produced by Maxim, which has 2.5V battery power, 10-year ultra-long running time and ±2 minutes/month clock accuracy. The device adopts 32-bit dual counters, which can respectively record real-time time and cumulative time, respectively, under VCC and VBAT power supply.

The MAX889 is a high-frequency, adjustable, 200mA inverting charge pump that delivers a regulated negative output voltage at loads of up to 200mA. The device operates with inputs from 2.7V to 5.5V to produce an adjustable, regulated output from -2.5V to -VIN. The MAX889 is available with an operating frequency of 2MHz (T version), 1MHz (S version), or 0.5MHz (R version). The higher switching frequency devices allow the use of smaller capacitors for space-limited applications. The lower frequency devices have lower quiescent current. The MAX889 also features a 0.1µA logic-controlled shutdown mode and is available in an 8-pin SO package. An evaluation kit, MAX889SEVKIT, is available.

The MAX7389/MAX7390 are replacements for ceramic resonators, crystals, and supervisory functions for microcontrollers in 3.3V and 5V applications. They provide clock source, reset, and watchdog functions. The devices are resistant to EMI and vibration, and operate reliably at high temperatures.

MAX6501-MAX6504 are low-cost, fully integrated temperature switches that assert a logic signal when their die temperature crosses a factory-programmed threshold.