MAXIM MAX490MJA/883B
- Package/Case: 8-pin ceramic DIP, narrow 0.3 inch (J8)
- Device Type: Full-duplex RS-485/RS-422 transceiver
- Drivers / Receivers: 1 driver / 1 receiver
- Duplex Mode: Full duplex
- Supply Voltage: 5 V nominal
- Maximum Data Rate: 2.5 Mbps
- Quiescent Current: 120 µA to 500 µA family range
- Receiver Input Resistance: 12 kΩ minimum (one unit load)
- Receiver Fail-Safe: Logic-high output for open-circuit input
MAXIM MAX490MJA/883B is a interface and logic device. Review the exact-part parameters, package and temperature requirements before approving a source or alternate.
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MAX490MJA/883B Technical Overview: Verified Parameters Before Sourcing
MAXIM MAX490MJA/883B is a interface and logic device cataloged in Interface, Logic & Bus for Aerospace & Defense programs. Unlike a family-level listing, the complete ordering code matters: package, temperature grade, speed option, screening level and shipment format can change with a suffix. The structured reference data for this exact part identifies Package/Case 8-pin ceramic DIP, narrow 0.3 inch (J8), Device Type Full-duplex RS-485/RS-422 transceiver, Drivers / Receivers 1 driver / 1 receiver, Duplex Mode Full duplex.
These values are useful for initial BOM and sourcing review, but engineering approval should still use the latest manufacturer-controlled datasheet, package drawing and change notices. For availability, lot/date code and documentation, send Sparkle Electronics the complete MAX490MJA/883B requirement.
MAX490MJA/883B Key Specifications
| Parameter | MAX490MJA/883B |
|---|---|
| Package/Case | 8-pin ceramic DIP, narrow 0.3 inch (J8) |
| Device Type | Full-duplex RS-485/RS-422 transceiver |
| Drivers / Receivers | 1 driver / 1 receiver |
| Duplex Mode | Full duplex |
| Supply Voltage | 5 V nominal |
| Maximum Data Rate | 2.5 Mbps |
| Quiescent Current | 120 µA to 500 µA family range |
| Receiver Input Resistance | 12 kΩ minimum (one unit load) |
| Receiver Fail-Safe | Logic-high output for open-circuit input |
| Protection | Driver short-circuit current limiting and thermal shutdown |
| Operating Temperature | -55°C to +125°C |
| Screening | MIL-STD-883B processing |
What the Specifications Mean in a Design Review
For this interface and logic device, the main compatibility checks are logic function, channel count, propagation delay, voltage thresholds, drive current and bus compatibility. A replacement should not be approved from the family name alone. The values below need to be checked against the schematic, PCB footprint, power tree, timing constraints, thermal analysis and program qualification baseline:
- Package/Case: 8-pin ceramic DIP, narrow 0.3 inch (J8)
- Device Type: Full-duplex RS-485/RS-422 transceiver
- Drivers / Receivers: 1 driver / 1 receiver
- Duplex Mode: Full duplex
- Supply Voltage: 5 V nominal
- Maximum Data Rate: 2.5 Mbps
- Quiescent Current: 120 µA to 500 µA family range
Minimum and maximum values are not interchangeable with typical test values, and package-level compatibility does not guarantee pin, timing or firmware compatibility. Where the assembly is used in high-reliability equipment, confirm the required screening, traceability, lead finish and environmental documentation before purchase.
MAX490MJA/883B and Related MAXIM Devices
The following pages provide useful internal comparison points. They are related sourcing options, not automatically drop-in replacements:
- MAXIM MAX485MJA — compare the exact architecture, package, speed or grade before substitution.
- MAXIM DG506ACK — compare the exact architecture, package, speed or grade before substitution.
- MAXIM MAX691AMJE — compare the exact architecture, package, speed or grade before substitution.
- MAXIM MAX232AMJE — compare the exact architecture, package, speed or grade before substitution.
When comparing these devices, start with the exact function and architecture, then verify package and pinout, voltage rails, speed or bandwidth, operating temperature and qualification grade. If any of those differ, an engineering redesign or requalification may be required.
Package, Temperature and Ordering-Code Checks
The orderable code MAX490MJA/883B must be kept intact on the RFQ. Confirm the manufacturer marking, package drawing, terminal finish, moisture handling, operating-temperature requirement and packing format. For obsolete or long-stored material, define acceptable date codes and inspection criteria before quotation rather than after delivery.
Sourcing teams should also request the documentation appropriate to the program: Certificate of Conformance, packing and label photographs, lot/date-code information, traceability, visual inspection, X-ray or electrical testing when required. See our quality-control approach and the broader Interface, Logic & Bus selection.
Applications and Procurement Context
MAX490MJA/883B may be evaluated for Aerospace & Defense systems where its verified electrical limits, package and temperature range match the approved design. Typical work includes new production, repair, lifecycle extension and last-time-buy planning. Application labels describe catalog relevance; final suitability remains a system-level engineering decision.
Frequently Asked Questions
What are the main MAX490MJA/883B parameters?
The key reference values are Package/Case 8-pin ceramic DIP, narrow 0.3 inch (J8), Device Type Full-duplex RS-485/RS-422 transceiver, Drivers / Receivers 1 driver / 1 receiver, Duplex Mode Full duplex. The complete table above should be reviewed together with the current manufacturer documentation and the operating conditions stated in that document.
Can another MAXIM part replace MAX490MJA/883B?
Not from the model name alone. Compare function, architecture, pinout, package, voltage, speed, temperature and qualification grade. The linked related devices are comparison starting points only.
What should be included in an RFQ?
Provide the exact part number, quantity, target delivery date, destination, acceptable date-code range and all documentation, screening or testing requirements. Submit the RFQ here.
Where can I review related components?
Browse Interface, Logic & Bus and the relevant Aerospace & Defense landing pages for other product families and sourcing guidance.
Need MAX490MJA/883B pricing, availability or traceability details? Contact Sparkle Electronics with the exact order code and procurement requirements.
