MAX487 |
RFQ for MAX487 Required Field |
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| Technical/Catalog Information | MAX487CPA |
| Vendor | Maxim Integrated Products |
| Category | Integrated Circuits (ICs) |
| Number of Drivers/Receivers | 1/1 |
| Type | Transceiver |
| Voltage - Supply | 4.75 V ~ 5.25 V |
| Package / Case | 8-DIP (300 mil) |
| Packaging | Tube |
| Protocol | RS422, RS485 |
| Lead Free Status | Contains Lead |
| RoHS Status | RoHS Non-Compliant |
| Other Names | MAX487CPA MAX487CPA |
| Product | Manufacturers | Pack | D/C |
| MAX487 | - | - | - |
Figure 3-83 shows the typical application circuit and pin configurations for the MAX481/83/85/87. Figures 3-84, 3-85, and 3-86 show the pin functions. Figure 3-87 is the selection table. Figures 3-88 and 3-89 show typical application circuits and pin configurations for the MAX488 through MAX491. Figure 3-90 shows the 1NlAX481/83/85/87 in a typical RS-485 network. Figure 3-91 shows the MAX488 through MAX491 connected in a full-duplex RS485 network. Figure 3-92 shows the MAX488 through MAX491 connected as a line repeater. MAXIM NEW RELEASE DATA BOOK, 1995, P. 2-t59, 2-165, 2-166, 2-167, 2-168, 2-171, 2-172.
The MAX481, MAX483, MAX485, MAX487MAX491, and MAX1487 are low-power transceivers for RS-485 and RS- 422 communication. Each part contains one driver and one receiver. The MAX483, MAX487, MAX488, and MAX489 feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, thus allowing error-free data transmission up to 250kbps. The driver slew rates of the MAX481, MAX485, MAX490, MAX491, and MAX1487 are not limited, allowing them to transmit up to 2.5Mbps.
These transceivers draw between 120µA and 500µA of supply current when unloaded or fully loaded with disabled drivers. Additionally, the MAX481, MAX483, and MAX487 have a low-current shutdown mode in which they consume only 0.1µA. All 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 MAX487 and MAX1487 feature quarter-unit-load receiver input impedance, allowing up to 128 MAX487/ MAX1487 transceivers on the bus. Full-duplex communications are obtained using the MAX488MAX491, while the MAX481, MAX483, MAX485, MAX487, and MAX1487 are designed for half-duplex applications.
Typical Application |
Features |
| Low-Power RS-485 Transceivers Low-Power RS-422 Transceivers Level Translators Transceivers for EMI-Sensitive Applications Industrial-Control Local Area Networks | ♦ For Fault-Tolerant ApplicationsMAX3430: ±80V Fault-Protected, Fail-Safe, 1/4 Unit Load, +3.3V, RS-485 Transceiver MAX3440EMAX3444E: ±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe, RS-485/J1708 Transceivers♦ For Space-Constrained Applications MAX3460MAX3464: +5V, Fail-Safe, 20Mbps, Profibus RS-485/RS-422 Transceivers MAX3362: +3.3V, High-Speed, RS-485/RS-422 Transceiver in a SOT23 Package MAX3280EMAX3284E: ±15kV ESD-Protected, 52Mbps, +3V to +5.5V, SOT23, RS-485/RS-422, True Fail-Safe Receivers MAX3293/MAX3294/MAX3295: 20Mbps, +3.3V, SOT23, RS-855/RS-422 Transmitters♦ For Multiple Transceiver Applications MAX3030EMAX3033E: ±15kV ESD-Protected, +3.3V, Quad RS-422 Transmitters♦ For Fail-Safe Applications MAX3080MAX3089: Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers♦ For Low-Voltage Applications MAX3483E/MAX3485E/MAX3486E/MAX3488E/ MAX3490E/MAX3491E: +3.3V Powered, ±15kV ESD-Protected, 12Mbps, Slew-Rate-Limited, True RS-485/RS-422 Transceivers |
