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Electronic Engineering News Digest |
COMPONENT NEWS | INDUSTRY NEWS | RoHS/WEEE NEWS |
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Introducing MASTR IV TETRA Base StationTyco Electronics announced today that its Wireless Network Solutions business introduced the MASTR IV ("Master Four") Terrestrial Trunked Radio (TETRA) Base Station to power secure digital trunked radio communications via TETRA. The addition of the MASTR IV product extends the M/A-COM MASTR series and marks the first MASTR product to facilitate the TETRA air interface with the VIDA (Voice, Interoperability, Data and Access) network platform. [Read more...] |
| Features |
| Description |
The MAX3237E consists of five line drivers, three line receivers, and a dual charge-pump circuit with ±15-kV ESD protection pin to pin (serial-port connection pins, including GND). The device meets the requirements of TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the serial-port connector. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. This device operates at data signaling rates of 250 kbit/s in normal operating mode and 1Mbits/s when MBAUD = VCC. The driver output slew rate is a maximum of 30 V/µs.
The MAX3237E transmitters are disabled and the outputs are forced into high-impedance state when the device is in shutdown mode (SHDN = GND) and the supply current falls to less than 1 µA. Also, during power down, the onboard charge pump is disabled; V+ is lowered to VCC, and V- is raised toward GND. Receiver outputs also can be placed in the high-impedance state by setting enable (EN) high. ROUT1B remains active all the time, regardless of the EN and SHDN condition.
The MAX3237EC is characterized for operation from 0°C to 70°C. The MAX3237EI is characterized for operation from -40°C to 85°C.
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