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更多推荐专辑3237高一化学金属的化学性质同步测试_百度文库
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3237高一化学金属的化学性质同步测试
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你可能喜欢MAX3237E | RS-232 Transceivers | Interface | Description & parametrics
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3-V To 5.5-V Single Channel RS-232 1 Mbit/s Line Driver/Receiver
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&-&The device is an EXACT EQUIVALENT in functionality and parametrics to the compared device.&
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 (MBAUD&=&GND) and 1Mbit/s when MBAUD = VCC. The driver output slew rate is a maximum of 30 V/&s.
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 &A. Also, during shutdown, the onboard cha 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.
Meets or Exceeds the Requirements of TIA/EIA-232-F and ITU v.28 Standards Operates With 3-V to 5.5-V VCC Supply Operates From 250 kbits/s to 1 Mbit/s Low Standby Current . . . 1 &A Typical External Capacitors . . . 4 & 0.1 &F Accepts 5-V Logic Input With 3.3-V Supply Designed to Be Interchangeable With Maxim MAX3237E Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II ESD Protection for RS-232 I/O Pins &15 kV & Human-Body Model (HBM) &8 kV & IEC, Contact Discharge &15 kV & IEC, Air-Gap Discharge APPLICATIONS Battery-Powered, Hand-Held, and Portable Equipment PDAs and Palmtop PCs Notebooks, Sub-Notebooks, and Laptops Digital Cameras Mobile Phones and Wireless Devices
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Drivers Per Package
Receivers Per Package
Operating Temperature Range
Pin/Package
Approx. Price (US$)
Power Saving Feature
IEC- SUPPORT
1.00 | 1ku
0.88 | 1ku
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