Details, datasheet, quote on part number: MAX1482CSD
PartMAX1482CSD
CategoryInterface and Interconnect
Description20 A, 1/8-Unit Load, Slew-rate Limited, RS-485 Transceivers
CompanyMaxim Integrated Products
DatasheetDownload MAX1482CSD datasheet
Cross ref.Similar parts: ISL4489EIBZ, DS14185, DS1487, DS16F95A, DS16F95QML, DS36276, DS36277, DS3695, DS3695A, DS3695AT
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Features, Applications

The MAX1482 and MAX1483 are low-power transceivers for RS-485 and RS-422 communication. Both feature slew-rate-limited drivers that minimize EMI and reduce reflections caused by improperly terminated cables. Data rates are guaranteed to 250kbps. The MAX1482/MAX1483 draw only 20A of supply current. Additionally, they have a low-current shutdown mode that consumes only 0.1A. Both parts operate from a single +5V supply. Drivers are short-circuit current limited and are 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 logic-high output if the input is open circuit. The MAX1482 is full duplex and the MAX1483 is half duplex. Both parts have a 1/8-unit-load input impedance that guarantees to 256 transceivers on the bus.

o Low 20A Operating Current o Slew-Rate Limited for Reduced EMI and Reduced Reflections o 0.1A Low-Current Shutdown Mode o Designed for RS-485 and RS-422 Applications o Operate from a Single +5V Supply to +12V Common-Mode Input Voltage Range o Allows to 256 Transceivers on the Bus-- Guaranteed (1/8-unit load) o Current Limiting and Thermal Shutdown for Driver Overload Protection

PART MAX1483EPA MAX1483ESA TEMP. RANGE to +85C PIN-PACKAGE 14 Plastic DIP SO 14 Plastic DIP SO 8 Plastic DIP SO 8 MAX 8 Plastic DIP 8 SO

Low-Power RS-485/RS-422 Networks Transceivers for EMI-Sensitive Applications Industrial-Control Local Area Networks Large 256-Node LANs

NOTE: PIN LABELS Y AND Z ON TIMING, TEST, AND WAVEFORM DIAGRAMS REFER TO PINS A AND B WHEN DE IS HIGH. TYPICAL OPERATING CIRCUIT SHOWN WITH DIP/SO PACKAGE.

Call toll free 1-800-998-8800 for free samples or literature.

Supply Voltage (VCC)...............................................................7V Control Input Voltages (RE, DE).................-0.5V to (VCC + 0.5V) Driver Input Voltage (DI).............................-0.5V to (VCC + 0.5V) Driver Output to 12.5V Receiver Input Voltages (A, to 12.5V Receiver Output Voltage (RO)....................-0.5V to (VCC + 0.5V) Continuous Power Dissipation (TA +70C) 8-Pin Plastic DIP (derate 9.09mW/C above +70C).....727mW 14-Pin Plastic DIP (derate 10.00mW/C above 8-Pin SO (derate 5.88mW/C above 14-Pin SO (derate 8.33mW/C above +70C)................667mW 8-Pin MAX (derate 4.10mW/C above +70C).............330mW Operating Temperature Ranges to +85C Storage Temperature to +160C Lead Temperature (soldering, 10sec).............................+300C

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.

(VCC TA = TMIN to TMAX, unless otherwise noted. Typical values are = +25C.) (Note 1) PARAMETER Differential Driver Output (no load) Differential Driver Output (with load) Change in Magnitude of Driver Differential Output Voltage for Complementary Output States Driver Common-Mode Output Voltage Change in Magnitude of Driver Common-Mode Output Voltage for Complementary Output States Three-State (high impedance) Output Current at Driver Logic Input High Voltage Logic Input Low Voltage Logic Input Current Input Current (A, B) Receiver Differential Threshold Voltage Receiver Input Hysteresis Receiver Output High Voltage Receiver Output Low Voltage Three-State (high impedance) Output Current at Receiver Input Resistance SYMBOL VOD1 VOD2 VOD VOC VOD 50 (RS-422), Figure 27 (RS-485), Figure or 50, Figure or 50, Figure or 50, Figure 1 MAX1482 only, < VY and 12V DE, DI, RE DE, DI, RE DE, DI, = 0V, VCC = 0V, VCC 5.25V -7V VCM 12V VCM = -4mA, VID = 4mA, VID 2.4V -7V VCM 12V VIN = 12V VIN = -7V VIN = 12V VIN = -7V CONDITIONS MIN TYP MAX UNITS V

Note 1: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless otherwise specified.

(VCC TA = TMIN to TMAX, unless otherwise noted. Typical values are = +25C.) (Note 1) PARAMETER SYMBOL 0V or VCC 0V or VCC RE = VCC DI = high or low, VO 12V (Note 0V VO VCC 35 7 CONDITIONS DE = VCC DE = VCC = 0V MIN TYP MAX mA A UNITS

Supply Current in Shutdown Driver Short-Circuit Current Receiver Short-Circuit Current

(VCC TA = TMIN to TMAX, unless otherwise noted. Typical values are = +25C.) (Note 1) PARAMETER Driver Input to Output Driver Output Skew to Output Driver Rise or Fall Time Driver Enable to Output High Driver Enable to Output Low Driver Disable Time from Low Driver Disable Time from High Receiver Input to Output SYMBOL tPLH tPHL tSKEW tR, tF tZH tZL tLZ tHZ tPLH, tPHL tSKD tZL tZH tLZ tHZ fMAX tSHDN CONDITIONS Figures 3 and 5, RDIFF = 100pF Figures 3 and 5, RDIFF = 100pF Figures 3 and 5, RDIFF = 100pF Figures 4 and 100pF, S2 closed Figures 4 and 100pF, S1 closed Figures 4 and 15pF, S1 closed Figures 4 and 15pF, S2 closed Figures 3 and 7, RDIFF = 100pF Figures 3 and 7, RDIFF = 100pF Figures 2 and 8, CRL 15pF, S1 closed Figures 2 and 8, CRL 15pF, S2 closed Figures 2 and 8, CRL 15pF, S1 closed Figures 2 and 8, CRL 15pF, S2 closed (Note MIN TYP MAX UNITS s ns kbps ns s

Receiver Skew Receiver Enable to Output Low Receiver Enable to Output High Receiver Disable Time from Low Receiver Disable Time from High Maximum Data Rate Time to Shutdown

Driver Enable from Shutdown to tZH(SHDN) Figures 4 and 100pF, S2 closed Output High Driver Enable from Shutdown to tZL(SHDN) Output Low Figures 4 and 100pF, S1 closed

Receiver Enable from Shutdown Figures 2 and 15pF, S2 closed, tZH(SHDN) to Output High 2V Receiver Enable from Shutdown tZL(SHDN) to Output Low Figures 2 and 15pF, S1 closed, 2V

Note 2: Applies to peak current. See Typical Operating Characteristics. Note 3: The MAX1482/MAX1483 are put into shutdown by bringing RE high and DE low. If the inputs are in this state for less than 50ns, the parts are guaranteed not to enter shutdown. If the inputs are in this state for at least 600ns, the parts are guaranteed to have entered shutdown. See Low-Power Shutdown Mode section.


 

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