MAX1481CUB ,Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited, 12Mbps, RS-485/RS-422 Transceivers in レMAX PackageMAX1481/MAX1484/MAX1485/MAX148619-1312; Rev 0; 10/97Software-Selectable, Half-/Full-Duplex, Slew-Ra ..
MAX1481CUB ,Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited, 12Mbps, RS-485/RS-422 Transceivers in レMAX PackageApplicationsinput is open circuit.Industrial-Control Local Area Networks__Selection TableData Slew- ..
MAX1481CUB ,Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited, 12Mbps, RS-485/RS-422 Transceivers in レMAX PackageApplications0.1µA. All devices operate from a single 5V supply.Low-Power RS-422/RS-485 Communicatio ..
MAX1481CUB ,Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited, 12Mbps, RS-485/RS-422 Transceivers in レMAX PackageELECTRICAL CHARACTERISTICS(V = +5V ±5%, T = T to T , unless otherwise noted. Typical values are at ..
MAX1481CUB+ ,Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited,12Mbps, RS-485/RS-422 Transceivers in µMAX PackageApplicationsinput is open circuit.Industrial-Control Local Area NetworksµMAX is a registered tradem ..
MAX1481CUB+T ,Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited,12Mbps, RS-485/RS-422 Transceivers in µMAX PackageELECTRICAL CHARACTERISTICS(V = +5V ±5%, T = T to T , unless otherwise noted. Typical values are at ..
MAX4066CEE+ ,Low-Cost, Low-Voltage, Quad, SPST, CMOS Analog SwitchMAX4066/MAX4066A19-0439; Rev 1; 3/96Low -Cost, Low -Voltage, Quad, SPST, CMOS Analog Sw itches_____ ..
MAX4066CPD ,Low-Cost, Low-Voltage, Quad, SPST, CMOS Analog SwitchesApplications' Wide Bandwidth: > 100MHzBattery-Operated Equipment______________Ordering Information ..
MAX4066CPD+ ,Low-Cost, Low-Voltage, Quad, SPST, CMOS Analog SwitchApplications♦ Wide Bandwidth: > 100MHzBattery-Operated Equipment______________Ordering Information ..
MAX4066CPD+ ,Low-Cost, Low-Voltage, Quad, SPST, CMOS Analog SwitchMAX4066/MAX4066A19-0439; Rev 1; 3/96Low -Cost, Low -Voltage, Quad, SPST, CMOS Analog Sw itches_____ ..
MAX4066CSD ,Low-Cost, Low-Voltage, Quad, SPST, CMOS Analog SwitchesELECTRICAL CHARACTERISTICS—Single +12V Supply(V+ = 12V ±10%, GND = 0V, V = 4.0V, V = 0.8V, T = T to ..
MAX4066CSD+ ,Low-Cost, Low-Voltage, Quad, SPST, CMOS Analog SwitchELECTRICAL CHARACTERISTICS—Single +12V Supply(V+ = 12V ±10%, GND = 0V, V = 4.0V, V = 0.8V, T = T to ..
MAX1481CUB-MAX1481EUB
Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited, 12Mbps, RS-485/RS-422 Transceivers in レMAX Package
_______________General DescriptionThe MAX1481/MAX1484/MAX1485/MAX1486 provide
software-selectable, half-/full-duplex, low-power, slew-
rate-limited, and high-speed (12Mbps) RS-485/RS-422
operation in a 10-pin µMAX package—the smallest
10-pin package available.
The software-selectable, half-/full-duplex MAX1485/
MAX1486 make obsolete the normally larger and more
expensive solutions required for selectable half-/full-
duplex RS-485/RS-422 operation: 1) a 14-pin, full-
duplex transceiver configured via jumpers between
receiver and transmitter lines, or 2) two 8-pin, half-
duplex transceivers, which require an additional invert-
er logic gate for software selectability.
The MAX1481/MAX1484 are functionally equivalent to
the industry-standard MAX491 and 75180, and are
designed for space-constrained, full-duplex RS-422
applications.
All parts contain one driver and one receiver and fea-
ture a 1/8-unit-load receiver input impedance, allowing
up to 256 transceivers on the bus. The MAX1481/
MAX1485 feature reduced-slew-rate drivers that mini-
mize EMI and reduce reflections caused by improperly
terminated cables, allowing error-free data transmission
up to 250kbps. The MAX1484/MAX1486 driver slew
rates are not limited, allowing them to transmit up to
12Mbps.
The MAX1481/MAX1484/MAX1485/MAX1486 draw only
300µA of supply current. The MAX1481 has a low-power
shutdown mode that reduces supply current to only
0.1µA. All devices operate from a single 5V supply.
Drivers are output 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.
____________________________Features10-Pin µMAX Package: Smallest 10-Pin PackageSoftware-Selectable Half-/Full-Duplex Operation
(MAX1485/MAX1486)0.1µA Low-Current Shutdown Mode (MAX1481)Slew-Rate Limiting Allows Error-Free Data
Transmission (MAX1481/MAX1485)12Mbps High-Speed Operation
(MAX1484/MAX1486)Allow up to 256 Transceivers on the Bus
________________________ApplicationsLow-Power RS-422/RS-485 Communications
Level Translators
Hand-Held Equipment
Battery-Powered Equipment
Transceiver for EMI-Sensitive Applications
Industrial-Control Local Area Networks
MAX1481/MAX1484/MAX1485/MAX1486
Software-Selectable,Half-/Full-Duplex,Slew-Rate-Limited,
12Mbps, RS-485/RS-422 Transceivers in µMAX Package19-1312; Rev 0; 10/97
______________________________________________________________Selection Table
MAX1481/MAX1484/MAX1485/MAX1486
Software-Selectable,Half-/Full-Duplex,Slew-Rate-Limited,
12Mbps, RS-485/RS-422 Transceivers in µMAX Package
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(VCC= +5V ±5%, TA= TMINto TMAX, unless otherwise noted. Typical values are at VCC= +5V and TA= +25°C.) (Note 1)
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.
Supply Voltage (VCC) ............................................................+7V
Control Input Voltage (RE, DE, H/F)...........-0.3V to (VCC+ 0.3V)
Driver Input Voltage (DI).............................-0.3V to (VCC+ 0.3V)
Driver Output Voltage (A, B, Y, Z)..........................-8V to +12.5V
Receiver Input Voltage, Half Duplex (Y, Z)............-8V to +12.5V
Receiver Input Voltage, Full Duplex (A, B).............-8V to +12.5V
Receiver Output Voltage (RO)....................-0.3V to (VCC+ 0.3V)
Continuous Power Dissipation
10-Pin µMAX (derate 5.6mW/°C above +70°C)............444mW
Operating Temperature Ranges
MAX148_C_ _......................................................0°C to +70°C
MAX148_E_ _....................................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10sec).............................+300°C
MAX1481/MAX1484/MAX1485/MAX1486
Software-Selectable,Half-/Full-Duplex,Slew-Rate-Limited,
12Mbps, RS-485/RS-422 Transceivers in µMAX Package
ELECTRICAL CHARACTERISTICS (continued)(VCC= +5V ±5%, TA= TMINto TMAX, unless otherwise noted. Typical values are at VCC= +5V and TA= +25ºC.) (Note 1)
SWITCHING CHARACTERISTICS (MAX1484/MAX1486)(VCC= 5V ±5%, TA= TMINto TMAX, unless otherwise noted. Typical values are at VCC= +5V and TA= +25°C.)
MAX1481/MAX1484/MAX1485/MAX1486
Software-Selectable,Half-/Full-Duplex,Slew-Rate-Limited,
12Mbps, RS-485/RS-422 Transceivers in µMAX Package
SWITCHING CHARACTERISTICS (MAX1481/MAX1485) (continued)(VCC= 5V ±5%, TA= TMINto TMAX, unless otherwise noted. Typical values are at VCC= +5V and TA= +25°C.)
Note 1:All currents into the device are positive; all currents out of the device are negative. All voltages are referenced to device
ground unless otherwise noted.
Note 2:ΔVODand ΔVOCare the changes in VODand VOC, respectively, when the DI input changes state.
Note 3:Maximum current level applies to peak current just prior to foldback-current limiting; minimum current level applies during
current limiting.
Note 4:Shutdown is enabled by bringing REhigh and DE low. If the enable inputs are in this state for less than 50ns, the MAX1481
is guaranteed not to enter shutdown. If the enable inputs are in this state for at least 600ns, the MAX1481 is guaranteed to
have entered shutdown.
MAX1481/MAX1484/MAX1485/MAX1486
Software-Selectable,Half-/Full-Duplex,Slew-Rate-Limited,
12Mbps, RS-485/RS-422 Transceivers in µMAX Package
__________________________________________Typical Operating Characteristics(VCC= +5V, TA= +25°C, unless otherwise noted.)
Software-Selectable,Half-/Full-Duplex,Slew-Rate-Limited,
12Mbps, RS-485/RS-422 Transceivers in µMAX Package
_________________________________Typical Operating Characteristics (continued)(VCC= +5V, TA= +25°C, unless otherwise noted.)
MAX1481/MAX1484/MAX1485/MAX1486
Software-Selectable,Half-/Full-Duplex,Slew-Rate-Limited,
12Mbps, RS-485/RS-422 Transceivers in µMAX Package
______________________________________________________________Pin Description*(MAX1485/MAX1486 only) In half-duplex mode, the driver outputs serve as receiver inputs. The full-duplex receiver inputs (A and B)
will still have a 1/8-unit load, but are not connected to the receiver.
MAX1481/MAX1484/MAX1485/MAX1486
Software-Selectable,Half-/Full-Duplex,Slew-Rate-Limited,
12Mbps, RS-485/RS-422 Transceivers in µMAX Package
_____________________________________________________________Function Tables
MAX1481
MAX1484
MAX1485/MAX1486X = Don’t care
Note:In shutdown mode, driver and receiver outputs are high impedance.
