MAX253ESA+ Maxim, MAX253ESA+ Datasheet
MAX253ESA+
Specifications of MAX253ESA+
Related parts for MAX253ESA+
MAX253ESA+ Summary of contents
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... FS D2 FREQUENCY SWITCH GND1 GND2 2 7 ________________________________________________________________ Maxim Integrated Products Call toll free 1-800-998-8800 for free samples or literature. Transformer Driver for Isolated RS-485 Interface ____________________________Features Power-Supply Transformer Driver for Isolated RS-485/RS-232 Data-Interface Applications It Single +5V or +3.3V Supply Low-Current Shutdown Mode: 0.4µA Pin-Selectable Frequency: 350kHz or 200kHz 8-Pin DIP, SO, and µ ...
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... CERDIP (derate 8.00mW/°C above +70°C) ..................640mW Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability ...
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Operating Characteristics (Circuit of Figure ±10 +25°C, unless otherwise noted OUTPUT RESISTANCE vs. TEMPERATURE (FS = LOW) 10.5 MEASURED AT TP1 10.0 9 4.5V IN 9.0 8.5 8.0 V ...
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Transformer Driver for Isolated RS-485 Interface ____________________________Typical Operating Characteristics (continued) (Circuit of Figure ±10 +25°C, unless otherwise noted EFFICIENCY vs. LOAD CURRENT (FS = HIGH) 100 5. ...
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... RS-485 data interface. Completely isolated communications are obtained by combining the MAX253 with a linear regulator, a center-tapped trans- former, optocouplers, and the appropriate Maxim inter- face product (as described in the Isolated RS-485/RS- 232 Data Interface section). The MAX253 consists oscillator followed by a ...
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Transformer Driver for Isolated RS-485 Interface 0.1µ MAX253 ON / OFF GND1 GND2 74HC04 390 DI * 74HC04 390 DE 3.3k * 74HC04 RO * ...
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V IN 3.3V C1 0.1µ N.C. 4 MAX253 ON / OFF GND1 GND2 2 7 1N5817 C5 0.1µF * 74HC04 390 DI * 74HC04 390 DE 3.3k * 74HC04 ...
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Transformer Driver for Isolated RS-485 Interface 0.1µ N.C. MAX253 OFF SD GND1 GND2 2 *74HC04 390 T1 IN 74HC04 390 T2 IN 74HC04 390 T3 IN 74HC04 390 T4 IN ...
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... Since the optocoupler outputs are relatively high- impedance nodes, they should be located as close as possible to the Maxim interface IC. This mini- mizes stray capacitance and maximizes data rate. Refer to the µMAX package information for pin spacing and physical dimensions ...
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Transformer Driver for Isolated RS-485 Interface 0.1µ OFF 3 FS FREQUENCY SWITCH GND1 *SEE TABLE 2 Figure Isolated 5V Application Circuit V IN 3.3V C1 0.1µ ...
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MAX253 GND1 GND2 0.1V to 0.5V 6 MAX480 2 4 49.9k *SEE TABLE 2 Figure 8. Typical 4mA to 20mA Application Circuit Output-Ripple Filtering A ...
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Transformer Driver for Isolated RS-485 Interface V IN INPUT MAX253 8 D2 GND1 GND2 2 7 *SEE TABLE 2 Figure 9a. Half-Wave Rectifier—Bipolar V IN INPUT MAX253 8 D2 GND1 ...
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ISO 5V ISO -12V 10µF MAX176 0.1µ ANALOG AIN CONVST INPUT 3 6 VREF CLOCK 4 5 0.1µF GND DATA 10µF 0.1µF 10µF SIGNAL GROUND *SEE TABLE 2 Figure 10. ...
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... ET product to prevent saturation at the worst-case lowest selected frequency. The MAX253’s guaranteed minimum fre- quency with the FS pin held low is 150kHz, equating to a maximum period of 6.67µs. The required ET product Table 2. Typical Transformer Characteristics CHARACTERISTIC +5V to ±10V ...
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... E/I/U cores). A typical core is the Philips 213CT050-3B7, which is a toroid 0.190” in diameter and 0.05” thick. For operation with this core at 5.5V maximum supply voltage, the primary should have about 22 turns on each side of the center tap turns total. This will result in a nominal primary inductance of about 832µ ...
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... B A1 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 16 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © ...