What is MAX490MJA/883B? It is the 883B military ordering code for the MAX490 full-duplex RS-485/RS-422 transceiver. Analog Devices' military data sheet identifies it as device type 07 in the J8 eight-lead CERDIP package and specifies operation from -55°C to +125°C with a 5 V ±5% supply. The commercial family data sheet shows that MAX490 has one driver and one receiver for full-duplex communication, supports data rates up to 2.5 Mbps, and is not slew-rate limited.
The exact MAX490 limits must not be borrowed from neighboring family members. MAX490 uses a 12 kΩ minimum receiver input resistance, and the family selection table specifies 32 devices on the bus; the reduced-rate and quarter-unit-load features shown elsewhere in the family table do not apply to this model. ZZX Electronics lists 7,500 pcs with date code 2113. Before acceptance, verify the full top marking, J8 ceramic package, lot/date code, 883B/SMD paperwork required by the order, electrical-test scope and storage history. The cited military data sheet does not by itself establish radiation hardness. Send an RFQ for current lot photos, traceability and inspection options.
| Attribute | Value |
|---|---|
| Exact Orderable Model | MAX490MJA/883B |
| Military Data Sheet Device Type | 07 |
| Product Type | Full-duplex RS-485/RS-422 transceiver |
| Driver / Receiver | One driver and one receiver |
| Maximum Data Rate | 2.5 Mbps |
| Slew-Rate Limited | No |
| Supply Voltage | 5 V ±5% |
| Ambient Operating Range | -55°C to +125°C |
| Package | J8, 8-lead CERDIP |
| Receiver Input Resistance | 12 kΩ minimum |
| Bus Loading | Standard unit load; selection table specifies 32 devices |
| Driver Protection | Short-circuit current limiting and thermal shutdown |
| Receiver Fail-Safe | Logic high for open-circuit input |
| Radiation Qualification | Not established by the cited data sheets; do not infer |
Download the current available datasheet for MAX490MJA/883B.
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