MAX22501EATA+

Overview

The MAX22501EATA+ is a half-duplex RS-485/RS-422 transceiver designed for high-speed communication over long cables. It supports data rates up to 100Mbps and operates on a supply voltage range of 3V to 5.5V. The device features integrated hot-swap protection and fail-safe receivers that ensure a logic-high output when inputs are shorted or open for longer than 10μs. It lacks the preemphasis circuitry found in the MAX22500E variant. The component is housed in an 8-pin TDFN-EP package with a pitch of 0.65mm and functions within an ambient temperature range of -40°C to +125°C.

Feature Summary

• Integrated hot-swap protection prevents false driver transitions during power-up or hot-plug events.
• Fail-safe receiver guarantees a logic-high output state when differential inputs are shorted or open.
• High common-mode rejection capability with a ±15V input range on A and B pins.
• Low-power shutdown mode reduces supply current to a maximum of 5μA.

Applications

• Motion Control
• Encoder Interfaces
• Field Bus Networks
• Industrial Control Systems

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and RoHS compliance status. Confirm availability through authorized Analog Devices distributors, as stock levels fluctuate. Ensure the procurement channel provides valid traceability documents matching the manufacturer's specifications.

Selection Notes

Select this model when preemphasis functionality is unnecessary for the application. Choose this part over the MAX22500E if the system does not require extended cable length compensation via signal boosting. Verify that the 8-pin TDFN footprint aligns with the PCB layout requirements.

Part Context

This component belongs to the MAX2250xE family of ESD-protected RS-485/RS-422 transceivers. It shares core electrical characteristics with the MAX22500E but omits the integrated preemphasis circuitry. The family is optimized for robust communication in industrial environments requiring high noise immunity.

Replacement Considerations

MAX22500EATB+ serves as a functional substitute if preemphasis capabilities are required or acceptable. Other MAX2250x variants may be considered based on pin count and package size requirements.

FAQ

Does the MAX22501EATA+ include preemphasis circuitry?

No, the MAX22501E does not feature integrated preemphasis. This function is exclusive to the MAX22500E variant within the same family.

What is the fail-safe behavior of the receiver?

The receiver guarantees a logic-high output on the RO pin when the differential inputs (A and B) are shorted or open for longer than 10μs.

How is the device placed into low-power shutdown?

Shutdown is activated by driving the RE input high and the DE input low simultaneously. In this state, the supply current drops to a maximum of 5μA.