MAXIM Manuals (Industrial)

The MAX3380E/MAX3381E are +2.35V to +5.5V-powered EIA/TIA-232 and V.28/V.24 communication interfaces with low power requirements, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection on both the TTL and RS-232 sides. They have two receivers and two transmitters. All RS-232 inputs, outputs, and logic input pins 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 Discharge method. The proprietary low-dropout transmitter output stage enables true RS-232 performance from a +3.1V to +5.5V supply with a dual charge pump. The parts reduce the transmitter output levels to RS-232-compatible levels with no increase in supply current for supplies less than +3.1V and greater than +2.35V. The +2.35V to +5.5V operating range is fully compatible with lithium-ion (Li+) batteries. The charge pump requires only four small 0.1µF capacitors for operation. The MAX3380E/MAX3381E transceivers use Maxim’s revolutionary AutoShutdown Plus™ feature to automatically enter a 1µA shutdown mode. These devices shut down the on-board power supply and drivers when they do not sense a valid signal transition for 30 seconds on either the receiver or transmitter inputs. The MAX3380E is capable of transmitting data at rates of 460kbps while maintaining RS-232 output levels, and the MAX3381E operates at data rates up to 250kbps.

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The MAX3384E is a 3V-powered EIA/TIA-232 and V.28/V.24 communications interface with low power requirements, high data-rate capabilities, and en- hanced electrostatic discharge (ESD) protection. All transmitter outputs and receiver inputs are protected to ±15kV using IEC 1000-4-2 Air-Gap Discharge, ±8kV using IEC 1000-4-2 Contact Discharge, and ±15kV using the Human Body Model. The transceiver has a proprietary low-dropout transmit- ter output stage, delivering true RS-232 performance from a +3.0V to +5.5V supply with a dual charge pump. The charge pump requires only four small 0.1µF capac- itors for operation from a +3.3V supply. Each device is guaranteed to run at data rates of 250kbps while main- taining RS-232 output levels. The MAX3384E has two receivers and two drivers. It features a 1µA shutdown mode that reduces power con- sumption and extends battery life in portable systems. The MAX3384E is available in a space-saving SSOP package in either the commercial (0°C to +70°C) or extended temperature (-40°C to +85°C) range.

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The MAX3385E is a 3V-powered EIA/TIA-232 and V.28/V.24 communications interface chip with low power requirements, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection. It features ±15kV IEC 1000-4-2 Air-Gap Discharge protection, ±8kV IEC 1000-4-2 Contact Discharge protection, and ±15kV Human Body Model protection. The chip utilizes a proprietary low-dropout transmitter output stage, which enables true RS-232 performance from a +3.0V to +5.5V supply with a dual charge pump. The charge pump only requires four small 0.1µF capacitors for operation from a +3.3V supply. Each device is capable of running at data rates of 250kbps while maintaining RS-232 output levels. The MAX3385E has two receivers and two drivers. It includes a 1µA shutdown mode that reduces power consumption and extends battery life in portable systems. The receivers can remain active in shutdown mode, allowing external devices such as modems to be monitored using only 1µA supply current. The MAX3385E is available in a space-saving SSOP package in either the commercial (0°C to +70°C) or extended-industrial (-40°C to +85°C) temperature range.

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The MAX3386E is a 3V-powered EIA/TIA-232 and V.28/V.24 communications interface with low power requirements, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection. The device has two receivers and three transmitters. All RS-232 inputs and outputs are protected to ±15kV using the IEC 1000-4-2 Air-Gap Discharge method, ±8kV using the IEC 1000-4-2 Contact Discharge method, and ±15kV using the Human Body Model. A proprietary low-dropout transmitter output stage enables true RS-232 performance from a +3.0V to +5.5V supply with a dual charge pump. The charge pump requires only four small 0.1µF capacitors for operation from a +3.3V supply. The MAX3386E is capable of running at data rates up to 250kbps while maintaining RS-232 compliant output levels. The MAX3386E has a unique VL pin that allows interoperability in mixed-logic voltage systems. Both input and output logic levels are pin programmable through the VL pin. The MAX3386E is available in a space-saving TSSOP package.

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MAX3387E is a low-power, high data rate, enhanced ESD protected 3V powered EIA/TIA-232 and V.28/V.24 communications interface from MAXIM

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The MAX3388E/MAX3389E are 2.5V-powered EIA/TIA-232 and V.28/V.24 communications interfaces with low power requirements, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection.

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The MAX3362 is a low-power, high-speed, single +3.3V-powered RS-485/RS-422 transceiver. The device contains one differential transceiver consisting of a line driver and receiver. The transceiver operates at data rates up to 20Mbps, with an output skew of less than 6ns. Driver and receiver propagation delays are guaranteed below 50ns. This fast switching and low skew make the MAX3362 ideal for multidrop clock/data distribution applications. The output level is guaranteed at +1.5V with a standard 54Ω load, compliant with RS-485 specifications. The transceiver draws 1.7mA supply current when unloaded or fully loaded with the drivers disabled. Additionally, the MAX3362 has a low-power shutdown mode, reducing the supply current to 1µA. The MAX3362 has a 1/8-unit-load receiver input impedance, allowing up to 256 transceivers on the bus. The MAX3362 is designed for half-duplex communication. The device has a hot-swap feature that eliminates false transitions on the data cable during circuit initialization. The drivers are short-circuit current limited, and a thermal shutdown circuit protects against excessive power dissipation. The MAX3362 is available in an 8-pin SOT package and specified over industrial and automotive temperature ranges. Applications: Clock/Data Distribution, Telecom Equipment, Security Equipment, POS Equipment, Industrial Controls.

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The MAX2335 RF front-end receiver IC is designed for CDMA and OFDM applications in the 450MHz band. The MAX2335 includes a low-noise amplifier (LNA) with adjustable IIP3 to minimize desensitization due to cross-modulation in the presence of a large interfering signal. The mixer features differential IF outputs and is designed for high linearity and low noise, which is well suited for CDMA and OFDM applications. An on-chip frequency divider is included to allow the use of a standard 1GHz VCO. Alternatively, the divider can be bypassed for use with a lower-frequency VCO. The MAX2335 is available in a 28-pin TQFN package with exposed paddle and is specified for the -40°C to +85°C extended temperature range. The device is also offered in a lead-free package.

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The MAX2335 evaluation kit simplifies evaluation of the MAX2335 450MHz CDMA/OFDM LNA/mixer. This kit allows evaluation of the device’s low-noise amplifier (LNA), downconverter, and buffer.

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MAX2335 450MHz, CDMA/OFDM LNA/mixer evaluation kit simplifies evaluation of the MAX2335. Includes all critical matching components. RF and IF signal ports use 50-ohm SMA connectors.

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MAX2338 EV kit is a MAX2338 evaluation kit that can simplify the evaluation of MAX2338. This kit supports single supply operation and includes all critical matching components.

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The MAX2338 evaluation kit simplifies evaluation of the MAX2338 dual-band, triple-mode LNA and mixers. It includes 50Ω SMA connectors for all RF and IF input and output signals. Supports +2.7V to +3.3V single supply operation, and includes all critical matching components.

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The MAX2338 is a dual-band CDMA cellular phone receiver RF front-end IC designed by Texas Instruments, and it can also be used in dual-band TDMA, GSM, or EDGE cellular phones. Thanks to the MAX2338's on-chip low-power LO divider, the cellular VCO module can be eliminated. The MAX2338 includes a low-noise amplifier (LNA) with an adjustable high-input third-order intercept point (IIP3) to minimize intermodulation and cross-modulation in the presence of large interfering signals. For cellular band operation, a low-gain LNA is available for higher cascaded IIP3 at lower current. The CDMA mixers are designed for high linearity, low noise, and differential IF outputs. The FM mixer is designed for lower current and single-ended output. The MAX2338 triple-mode LNA/mixer includes an on- chip LO frequency divider to allow the use of a single VCO for both bands. This device is available in an ultra- small 28-pin leadless QFN package.

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The MAX2059 high-linearity digital-variable-gain amplifier (DVGA) is designed to provide 56dB of total gain range and typical output IP3 and output P1dB levels of +31.8dBm and +18.4dBm, respectively. The device is ideal for a variety of applications, including single and multicarrier 1700MHz to 2200MHz DCS 1800/PCS 1900 EDGE, cdma2000®, WCDMA/UMTS, and TD-SCDMA base stations. The MAX2059 yields a high level of component integration, which includes two 5-bit digital attenuators, a two-stage driver amplifier, a loopback mixer, and a serial interface to control the attenuators. The MAX2059 is pin compatible with the MAX2058 700MHz to 1200MHz DVGA, facilitating an easy design-in for applications where a common PC board layout is used for both frequency bands. The MAX2059 is available in a 40-pin thin QFN package with an exposed paddle. Electrical performance is guaranteed over a -40°C to +85°C temperature range.

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The MAX2058 is a high linearity digital variable gain amplifier (DVGA) from Texas Instruments. It provides 62dB of total gain range and typical output IP3 and output P1dB levels of +32.3dBm and +19dBm, respectively. The device is ideal for a variety of applications, including RFID handheld and portal readers, as well as single and multicarrier 700MHz to 1200MHz GSM/EDGE, cdma2000®, WCDMA, and iDEN® base stations.

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MAX2057 is a high-performance variable-gain amplifier produced by Texas Instruments. It operates in the frequency range of 1700MHz to 2500MHz, has a gain of 15.5dB, a noise figure of 6dB, and an output 1dB compression point of 23.8dBm. OIP3 is as high as 37dBm, and it can provide 21dB or 42dB selectable attenuation ranges.

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The MAX2057 is a general-purpose, high-performance variable-gain amplifier (VGA) designed to operate in the 1700MHz to 2500MHz frequency range. It features 15.5dB of gain, 6dB of noise figure, and an output 1dB compression point of 23.8dBm. The MAX2057 also provides an exceptionally high OIP3 level of 37dBm, which is maintained over the entire attenuation range. The on-chip analog attenuators yield infinite control and high attenuation accuracy over selectable 21dB or 42dB control ranges. These features make the MAX2057 an ideal VGA for DCS/PCS, cdma2000, W-CDMA, and PHS/PAS transmitter and power amplifier AGC circuits. It is pin compatible with the MAX2056 800MHz to 1000MHz VGA, making it suitable for applications where a common PC board layout is used for both frequency bands. The MAX2057 operates from a single +5V supply and is available in a compact 36-pin thin QFN package (6mm x 6mm x 0.8mm) with an exposed paddle. Electrical performance is guaranteed over the extended -40°C to +85°C temperature range.

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The MAX2056 is a high-performance variable-gain amplifier (VGA) designed to operate in the 800MHz to 1000MHz frequency range. It features 15.5dB of gain, 4.5dB of noise figure, and an output 1dB compression point of 23.5dBm. The MAX2056 also provides an exceptionally high OIP3 level of 39dBm, which is maintained over the entire attenuation range. In addition, the on-chip analog attenuators yield infinite control and high attenuation accuracy over selectable 22dB or 44dB control ranges. Each of these features makes the MAX2056 an ideal VGA for cellular band GSM, cdma2000, W-CDMA, and iDEN transmitter and power amplifier AGC circuits.

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