MAX1485
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MAX1485

Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited,12Mbps, RS-485/RS-422 Transceivers in µMAX Package

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 5
1ku List Price Starting From $2.29
Features
  • 10-Pin µMAX Package: Smallest 10-Pin Package
  • Software-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
Additional Details
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The 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 inverter 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 feature 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 minimize 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.

Applications

  • Battery-Powered Applications
  • Handheld Equipment
  • Industrial Control Local Area Networks
  • Level Translators
  • Low-Power RS-422/RS-485 Communications
  • Transceivers for EMI-Sensitive Applications
Part Models 5
1ku List Price Starting From $2.29

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Documentation

Documentation

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MAX1485CUB+T
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MAX1485EUB+
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MAX1485EUB/GG8
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Product Lifecycle

PCN

Jul 28, 2023

- 2361H

WAFER FAB

MAX1485CUB+

PRODUCTION

MAX1485CUB+T

PRODUCTION

MAX1485EUB+

PRODUCTION

MAX1485EUB+T

PRODUCTION

May 1, 2020

- 1753R

ASSEMBLY

MAX1485CUB+

PRODUCTION

MAX1485CUB+T

PRODUCTION

Sep 19, 2018

- 1753N

ASSEMBLY

MAX1485EUB+

PRODUCTION

MAX1485EUB+T

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Part Models

Product Lifecycle

PCN

Jul 28, 2023

- 2361H

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WAFER FAB

MAX1485CUB+

PRODUCTION

MAX1485CUB+T

PRODUCTION

MAX1485EUB+

PRODUCTION

MAX1485EUB+T

PRODUCTION

May 1, 2020

- 1753R

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ASSEMBLY

MAX1485CUB+

PRODUCTION

MAX1485CUB+T

PRODUCTION

Sep 19, 2018

- 1753N

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ASSEMBLY

MAX1485EUB+

PRODUCTION

MAX1485EUB+T

PRODUCTION

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