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74F283
Datasheet
General description
The 74F283 adds two 4-bit binary words (An plus Bn) plus the incoming carry. The binary sum appears on the sum outputs (0?3) and the outgoing carry (C OUT ) according to the equation: CIN +20 (A0+B0)+21 (A1+B1)+22 (A2+B2)+23 (A3+B3) =0+21+42+83+16COUT where (+)=plus
Due to the symmetry of the binary add function, the 74F283 can be used with either all active-High operands (positive logic) or with all active-Low operands (negative logic). See Function Table. In case of all active-Low operands (negative logic) the results 1-4 and COUT should be interpreted also as active-Low. With active-High inputs, CIN cannot be left open; it must be held Low when no 'carry in' is intended. Interchanging inputs of equal weight does not affect the operation, thus A0, B0, CIN can arbitrarily be assigned to pins 5, 6, 7, etc.
Due to pin limitations, the intermediate carries of the 74F283 are not brought out for use as inputs or outputs. However, other means can be used to effectively insert a carry into, or bring a carry out from, an intermediate stage.
Features
- High speed 4-bit addition
- Cascadable in 4-bit increments
- Fast Internal carry look-ahead
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| N74F283D | N74F283D | 9338 386 00602 | Volume production | SOT109-1
(SO16) | Tube (Signetics) | Standard Marking | N74F283D
| week 6, 2004 |
| N74F283D | N74F283D-T | 9338 386 00623 | Volume production | SOT109-1
(SO16) | Reel Pack, SMD, 13" (Signetics) | Standard Marking | N74F283D
| week 6, 2004 |
| N74F283N | N74F283N | 9337 948 60602 | Volume production | SOT38-4
(DIP16) | Tube (Signetics) | Standard Marking | N74F283N
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| N74F283D | 9338 386 00602 | 0.4300 | not available | |||||
| N74F283D | 9338 386 00623 | 0.4300 | Order samples | |||||
| N74F283N | 9337 948 60602 | 0.5400 | Order samples |
Technical documents
Application Notes
AN202_1;
Testing and specifying FAST logic (01-Jun-87)
AN203_2;
Test Fixtures for High Speed Logic (02-Apr-98)
AN216_2;
Arbitration in shared resource systems (18-Jul-88)
Parametrics/similar products
| Type number | Package | Description | Propagation Delay(ns) | Voltage | No. of Pins | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|
| N74F283D | SOT109-1
(SO16) | 4-Bit Binary Full Adder with Fast Carry | 7 | 4.5-5.5 V | 16 | TTL | -1/+20 mA |
| N74F283N | SOT38-4
(DIP16) | 4-Bit Binary Full Adder with Fast Carry | 7 | 4.5-5.5 V | 16 | TTL | -1/+20 mA |
Similar products
74F283 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.
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