Description
SNJ54LS181J Texas Instruments - Yeehing Electronics
Arithmetic Logic Units/Function Generators
Pricing (USD)
| Quantity | Unit Price |
| 1 — 99 | 26.783 |
| 100 — 249 | 23.807 |
| 250 — 999 | 19.571 |
| 1,000 + | 12.25 |
The above prices are for reference only.
Specifications
For more information, please refer to datasheet
Documents
| SNJ54LS181J Datasheet |
More Information
The 'LS181 and 'S181 are arithmetic logic units (ALU)/function generators that have a complexity of 75 equivalent gates on a monolithic chip. These circuits perform 16 binary arithmetic operations on two 4-bit words as shown in Tables 1 and 2. These operations are selected by the four function-select lines (S0, S1, S2, S3) and include addition, subtraction, decrement, and straight transfer. When performing arithmetic manipulations, the internal carries must be enabled by applying a low-level voltage to the mode control input (M). A full carry look-ahead scheme is made available in these devices for fast, simultaneous carry generation by means of two cascade-outputs (pins 15 and 17) for the four bits in the package. When used in conjunction with the SN54S182 or SN74S182 full carry look-ahead circuits, high-speed arithmetic operations can be performed. The typical addition times shown above illustrate the little additional time required for addition of longer words when full carry look-ahead is employed. The method of cascading 'S182 circuits with these ALUs to provide multi-level full carry look-ahead is illustrated under typical applications data for the 'S182.
