The MAX3316–MAX3319 transceivers have a proprietary low-dropout transmitter output stage enabling RS-232-compatible performance from +2.25V to +3.0V with a dual-charge pump. These devices require only four 0.1µF capacitors, and are guaranteed to operate at data rates up to 460kbps.The MAX3318/MAX3319 achieve a 1µA supply current using Maxim's revolutionary AutoShutdown Plus™ feature. These devices automatically enter a low-power shutdown mode when the RS-232 cable is disconnected or the transmitters of the connected peripherals are inactive for more than 30 seconds. They turn on again when they sense a valid transition at any transmitter or receiver input. AutoShutdown Plus saves power without changes to the existing BIOS or operating system. The MAX3318 is a 2-Tx/2-Rx device while the MAX3319 is a 1-Tx/1-Rx device. These devices also feature a logic-level output (READY) that asserts when the charge pump is regulating and the device is ready to begin transmitting.The MAX3316/MAX3317 are 2-Tx/2-Rx transceivers. The MAX3317 features a 1µA shutdown mode that can be entered by driving active-low SHDN low. The MAX3317's receivers remain active while in shutdown mode, allowing external devices such as modems to be monitored using only 1µA supply current.These devices are available in space-saving packages: MAX3316 (16-pin SSOP and 20-pin TSSOP), MAX3317/MAX3318 (20-pin SSOP and 20-pin TSSOP), and MAX3319 (16-pin SSOP).ApplicationsCell PhonesGlobal Positioning Systems (GPS)Handheld Electronic BooksHandheld Instruments (PDAs, Palmtops)Handy TerminalsPagersPalmtop Computers

The MAX3380E/MAX3381E are +2.35V to +5.5V-poweredEIA/TIA-232 and V.28/V.24 communication interfaceswith low power requirements, high data-ratecapabilities, and enhanced electrostatic discharge(ESD) protection on both the TTL and RS-232 sides.The MAX3380E/MAX3381E have two receivers and twotransmitters. All RS-232 inputs, outputs, and logic inputpins are protected to ±15kV using IEC 1000-4-2 Air-Gap Discharge method and the Human Body Model, and ±8kV using IEC 1000-4-2 Contact Dischargemethod.The proprietary low-dropout transmitter output stageenables true RS-232 performance from a +3.1V to+5.5V supply with a dual charge pump. The partsreduce the transmitter output levels to RS-232-compatiblelevels with no increase in supply current for suppliesless than +3.1V and greater than +2.35V. The+2.35V to +5.5V operating range is fully compatiblewith lithium-ion (Li+) batteries. The charge pumprequires only four small 0.1µF capacitors for operation.The MAX3380E/MAX3381E transceivers use Maxim'srevolutionary AutoShutdown Plus™ feature to automaticallyenter a 1µA shutdown mode. Thesedevices shut down the on-board power supply anddrivers when they do not sense a valid signal transitionfor 30 seconds on either the receiver or transmitterinputs.The MAX3380E is capable of transmitting data atrates of 460kbps while maintaining RS-232 outputlevels, and the MAX3381E operates at data rates upto 250kbps. The MAX3381E offers a slower slew ratefor applications where noise and EMI are issues. TheMAX3380E/MAX3381E have a unique VL pin thatallows interoperation in mixed-logic voltage systemsdown to +1.65V. Both input and output logic levelsare referenced to the VL pin. The MAX3380E/MAX3381Eare available in a space-saving TSSOP package.ApplicationsCellular Data CablesDigital Still CamerasGPS ReceiversPDA Data Lump Cables

The MAX3380E/MAX3381E are +2.35V to +5.5V-poweredEIA/TIA-232 and V.28/V.24 communication interfaceswith low power requirements, high data-ratecapabilities, and enhanced electrostatic discharge(ESD) protection on both the TTL and RS-232 sides.The MAX3380E/MAX3381E have two receivers and twotransmitters. All RS-232 inputs, outputs, and logic inputpins are protected to ±15kV using IEC 1000-4-2 Air-Gap Discharge method and the Human Body Model, and ±8kV using IEC 1000-4-2 Contact Dischargemethod.The proprietary low-dropout transmitter output stageenables true RS-232 performance from a +3.1V to+5.5V supply with a dual charge pump. The partsreduce the transmitter output levels to RS-232-compatiblelevels with no increase in supply current for suppliesless than +3.1V and greater than +2.35V. The+2.35V to +5.5V operating range is fully compatiblewith lithium-ion (Li+) batteries. The charge pumprequires only four small 0.1µF capacitors for operation.The MAX3380E/MAX3381E transceivers use Maxim'srevolutionary AutoShutdown Plus™ feature to automaticallyenter a 1µA shutdown mode. Thesedevices shut down the on-board power supply anddrivers when they do not sense a valid signal transitionfor 30 seconds on either the receiver or transmitterinputs.The MAX3380E is capable of transmitting data atrates of 460kbps while maintaining RS-232 outputlevels, and the MAX3381E operates at data rates upto 250kbps. The MAX3381E offers a slower slew ratefor applications where noise and EMI are issues. TheMAX3380E/MAX3381E have a unique VL pin thatallows interoperation in mixed-logic voltage systemsdown to +1.65V. Both input and output logic levelsare referenced to the VL pin. The MAX3380E/MAX3381Eare available in a space-saving TSSOP package.ApplicationsCellular Data CablesDigital Still CamerasGPS ReceiversPDA Data Lump Cables

The MAX3380E/MAX3381E are +2.35V to +5.5V-poweredEIA/TIA-232 and V.28/V.24 communication interfaceswith low power requirements, high data-ratecapabilities, and enhanced electrostatic discharge(ESD) protection on both the TTL and RS-232 sides.The MAX3380E/MAX3381E have two receivers and twotransmitters. All RS-232 inputs, outputs, and logic inputpins are protected to ±15kV using IEC 1000-4-2 Air-Gap Discharge method and the Human Body Model, and ±8kV using IEC 1000-4-2 Contact Dischargemethod.The proprietary low-dropout transmitter output stageenables true RS-232 performance from a +3.1V to+5.5V supply with a dual charge pump. The partsreduce the transmitter output levels to RS-232-compatiblelevels with no increase in supply current for suppliesless than +3.1V and greater than +2.35V. The+2.35V to +5.5V operating range is fully compatiblewith lithium-ion (Li+) batteries. The charge pumprequires only four small 0.1µF capacitors for operation.The MAX3380E/MAX3381E transceivers use Maxim'srevolutionary AutoShutdown Plus™ feature to automaticallyenter a 1µA shutdown mode. Thesedevices shut down the on-board power supply anddrivers when they do not sense a valid signal transitionfor 30 seconds on either the receiver or transmitterinputs.The MAX3380E is capable of transmitting data atrates of 460kbps while maintaining RS-232 outputlevels, and the MAX3381E operates at data rates upto 250kbps. The MAX3381E offers a slower slew ratefor applications where noise and EMI are issues. TheMAX3380E/MAX3381E have a unique VL pin thatallows interoperation in mixed-logic voltage systemsdown to +1.65V. Both input and output logic levelsare referenced to the VL pin. The MAX3380E/MAX3381Eare available in a space-saving TSSOP package.ApplicationsCellular Data CablesDigital Still CamerasGPS ReceiversPDA Data Lump Cables

The MAX3460–MAX3464 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 output level with a 54Ω load, 20Mbps 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 MAX3460–MAX3464 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 output level with a 54Ω load, 20Mbps 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 Maxim ICL7129A/MAX7129 is a high precision monolithic 4-1/2 digit A/D converter that directly drives a multiplexed liquid crystal display. Using a novel 'successive integration' technique, the ICL7129A/MAX7129 has a ±20,000 count resolution on both 2.00000V and 200.00mV ranges. It features high impedance differential inputs, excellent differential linearity, true ratiometric operation and auto polarity. The only external active component required to make precision DVM/DPMs is a reference. The overrange and underrange outputs and the 10:1 range changing input facilitate the design of autoranging systems. The ICL7129A/MAX7129 detects and flags a LOW BATTERY condition and also checks for continuity, giving a visual indication and a logic level output which can be used to generate an audible signal.The MAX7129 has a fullscale accuracy of 0.0005%, resolution of 10µV, zero reading drift of 0.5µV/°C, an input bias of 10pA max, and a rollover error of less than 1 count. Maxim has reduced the noise of the ICL7129A to 3µV—significantly lower than the MAX7129.

The MAX1480EA/MAX1480EC/MAX1490EA/MAX1490EB are complete, electrically isolated, RS-485/RS-422 data communications interface solutions in a hybrid microcircuit. The RS-485/RS-422 I/O pins are protected against ±15kV electrostatic discharge (ESD) shocks, without latchup. Transceivers, optocouplers, and a transformer provide a complete interface in a standard DIP package. A single +5V supply on the logic side powers both sides of the interface.The MAX1480EC/MAX1490EB feature reduced-slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 160kbps. The MAX1480EA/MAX1490EA driver slew rate is not limited, allowing transmission rates up to 2.5Mbps. The MAX1480EA/MAX1480EC are designed for half-duplex communication, while the MAX1490EA/MAX1490EB feature full-duplex communication.Drivers are short-circuit current limited and protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a known output (RO low for the MAX1480EA/MAX1480EC, active-low RO high for the MAX1490EA/ MAX1490EB) if the input is open circuit.The MAX1480EA/MAX1480EC/MAX1490EA/MAX1490EB withstand 1260VRMS (1min) or 1520VRMS (1s). Their isolated outputs meet all RS-485/RS-422 specifications. The MAX1480EA/MAX1480EC are available in a 28-pin DIP package, and the MAX1490EA/MAX1490EB are available in a 24-pin DIP package.ApplicationsAutomated Test Equipment (ATE)HVAC/Building Control NetworksIndustrial Control Local Area NetworksIsolated RS-485/RS-422 Data InterfaceTelecomTransceivers for EMI-Sensitive Applications

The MAX1480EA/MAX1480EC/MAX1490EA/MAX1490EB are complete, electrically isolated, RS-485/RS-422 data communications interface solutions in a hybrid microcircuit. The RS-485/RS-422 I/O pins are protected against ±15kV electrostatic discharge (ESD) shocks, without latchup. Transceivers, optocouplers, and a transformer provide a complete interface in a standard DIP package. A single +5V supply on the logic side powers both sides of the interface.The MAX1480EC/MAX1490EB feature reduced-slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 160kbps. The MAX1480EA/MAX1490EA driver slew rate is not limited, allowing transmission rates up to 2.5Mbps. The MAX1480EA/MAX1480EC are designed for half-duplex communication, while the MAX1490EA/MAX1490EB feature full-duplex communication.Drivers are short-circuit current limited and protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a known output (RO low for the MAX1480EA/MAX1480EC, active-low RO high for the MAX1490EA/ MAX1490EB) if the input is open circuit.The MAX1480EA/MAX1480EC/MAX1490EA/MAX1490EB withstand 1260VRMS (1min) or 1520VRMS (1s). Their isolated outputs meet all RS-485/RS-422 specifications. The MAX1480EA/MAX1480EC are available in a 28-pin DIP package, and the MAX1490EA/MAX1490EB are available in a 24-pin DIP package.ApplicationsAutomated Test Equipment (ATE)HVAC/Building Control NetworksIndustrial Control Local Area NetworksIsolated RS-485/RS-422 Data InterfaceTelecomTransceivers for EMI-Sensitive Applications

The MAX1447/MAX1496/MAX1498 low-power, 3.5- and4.5-digit, analog-to-digital converters (ADCs) with integratedlight-emitting diode (LED) drivers operate from asingle 2.7V to 5.25V power supply. They include aninternal reference, a high-accuracy on-chip oscillator,and a multiplexed LED display driver. An internal chargepump generates the negative supply needed to powerthe integrated input buffers for single-supply operation.The ADC is configurable for either a ±2V or ±200mVinput range and it outputs its conversion results to anLED. The MAX1496 is a 3.5-digit (±1999 count) deviceand the MAX1447/MAX1498 are 4.5-digit (±19,999count) devices.The MAX1447/MAX1496/MAX1498 do not require externalprecision integrating capacitors, autozero capacitors,crystal oscillators, charge pumps, or other circuitryrequired with dual-slope ADCs (commonly used inpanel meter circuits).These devices also feature on-chip buffers for the differentialsignal and reference input, allowing directinterface with high-impedance signal sources. In addition,they use continuous internal offset-calibration andoffer >100dB rejection of 50Hz and 60Hz line noise.Other features include data hold and peak detectionand overrange/underrange detection. The MAX1447features on-demand enhanced offset calibration forimproved offset performance.The MAX1447/MAX1498 are available in a 32-pin, 7mmx 7mm TQFP package and the MAX1496 is available in28-pin SSOP and 28-pin PDIP packages. All devices inthis family operate over the -40°C to +85°C extendedtemperature range.ApplicationsDigital MultimetersDigital Panel MetersDigital VoltmetersHandheld meters