Description
WE ARE RICH ELECTRONICS
WE PURCHASE AND RECYCLE
SURPLUS ELECTRONIC
COMPONENTS AND EQUIPMENT!
For sale here we have the above…
1 Piece
The 74181 is a 4-bit slice arithmetic logic unit, implemented as a 7400 series TTL integrated circuit. The first complete ALU on a single chip, it was used as the arithmetic/logic core in the CPUs of many historically significant minicomputers and other devices. The starting point for the student of microprocessor internals often lies in the past. The technology of the early 1970s holds the fundamentals from which a modern processor can be understood, but remains simple enough to grasp in its entirety as a beginner. Registers, instruction decoders, counters, and an arithmetic/logic unit, or ALU. And for decades the 74181, as an all-in-one 4-bit ALU on a chip that you might have found in a minicomputer at the turn of the 1970s, represented the most convenient way to teach the operation of these devices. Electronic engineers and computer scientists of all ages will have encountered them as they gained their qualifications.
These are genuine early 70’s dated parts ideal for resurrecting early minicomputers or researching early computer technology.
74181N SPECIFICATIONS
| Status | Discontinued |
| Logic IC Type | ARITHMETIC LOGIC UNIT |
| Family | 74 |
| JESD-30 Code | R-PDIP-T24 |
| Number of Bits | 4 |
| Number of Functions | 1 |
| Number of Terminals | 24 |
| Operating Temperature-Min | 0.0 Cel |
| Operating Temperature-Max | 70.0 Cel |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Power Supply Current-Max (ICC) | 140.0 mA |
| Propagation Delay (tpd) | 48.0 ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Nom (Vsup) | 5 |
| Surface Mount | NO |
| Technology | BIPOLAR |
| Temperature Grade | COMMERCIAL |
| Terminal Form | THROUGH-HOLE |
| Terminal Position | DUAL |
| Additional Feature | CAPABLE OF 16 LOGIC & ARITHMETIC OPERATIONS |
The only manufacturer ID on the chip are the letters SW and coincidentally the only datasheet we found was from Signetics, so SW may be Signetics but we cannot be certain of this.
For datasheet search…74181N
Or go directly to…
https://www.datasheets360.com/pdf/522734102910279009
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PLEASE NOTE!
These parts came to us as part of a lot of surplus stock from a large ‘MILSPEC’ company and have been kept in storage for many years (date coded 1973), they are however stored with us sealed in original packaging and in good serviceable condition, the photographs are representative of their general appearance, being of some of our actual stock, and, as with all our products they come with a full guarantee.
If you have similar items to this, or indeed any electronic components that are surplus to requirements please contact us with details.
