Harris Corporation 8406901RA

8406901RA decodes the processor status inputs S0, S1, and S2 and produces memory, I/O, interrupt-acknowledge, address-latch, and data-transceiver control signals. The device supports both system-bus and I/O-bus operating modes, allowing the command outputs to be coordinated with external arbitration or used for a dedicated peripheral bus.

The exact Renesas-controlled product record identifies 8406901RA as a 20-lead CERDIP, package code FBT, with a 2.54 mm lead pitch. LCDChip registers this footprint under the canonical 20-DIP package entry.

Layout checks

• Confirm the 20-lead, 0.300-inch DIP land pattern and 2.54 mm pitch.
• Observe the pin-1 indicator and top-view numbering before assembly.
• Place a 0.1 µF decoupling capacitor between VCC pin 20 and GND pin 10 near the device.
• Verify socket, lead-form, and ceramic-package height requirements.

The production JPG was checked at the registered public path and returned a valid JPEG response.

The 20-lead CERDIP top-view pinout is defined in the 82C88 datasheet.

Signal polarity and timing must be checked against the processor mode and bus-arbitration design; the grouped cards above do not replace the complete timing diagrams.

Electrical limits apply under the conditions in the Renesas 82C88 datasheet. Confirm clock rate, loading, and timing margins for the selected processor configuration.

Do not substitute solely on the 82C88 function name. The CP82C88Z is a 20-lead PDIP commercial-temperature option that the controlled datasheet marks as no longer supported, so its material, qualification, temperature range, and lifecycle differ from 8406901RA. The MR82C88/B is a military-temperature 20-pad CLCC option with a different footprint and is also marked no longer supported. Verify pinout, package, temperature grade, qualification flow, timing, and lifecycle before considering either device.

8406901RA is a legacy Harris/Intersil orderable device now documented by Renesas Electronics. The exact Renesas product record lists the part as active and identifies the 20-lead CERDIP package, military qualification, and -55°C to +125°C operating range.

For traceable procurement, compare the complete 8406901RA ordering code, package style, top marking, date and lot codes, and accompanying documentation. The controlled product record lists a non-lead-free, hot-solder-dip CERDIP construction and QML Class Q qualification; acceptance criteria should be matched to the project drawing and incoming-inspection plan.

Confirm the complete ordering code, ceramic package, qualification flow, bus mode, processor clock, command timing, output loading, and arbitration behavior against the latest controlled documentation before release. Related 82C88 variants can differ in package, temperature grade, lifecycle, and qualification and must not be treated as unconditional drop-in replacements.