The '283 and 'LS283 adders are electrically and functionally identical to the '83A and 'LS83A, respectively; only the arrangement of the terminals has been changed. The 'S283 high performance versions are also functionally identical.

These improved full adders perform the addition of two 4-bit binary words. The sum () outputs are provided for each bit and the resultant carry (C4) is obtained from the fourth bit. These adders feature full internal look-ahead across all four bits generating the carry term in ten nanoseconds, typically, for the '283 and 'LS283, and 7.5 nanoseconds for the 'S283. This capability provides the system designer with partial look-ahead performance at the economy and reduced package count of a ripple-carry implementation.

The adder logic, including the carry, is implemented in its true form. End around carry can be accomplished without the need for logic or level inversion.

Series 54, Series 54LS, and Series 54S circuits are characterized for operation over the full temperature range of -55°C to 125°C. Series 74, Series 74LS, and Series 74S circuits are characterized for 0°C to 70°C operation.

• Full-Carry Look-Ahead Across the Four Bits
• Systems Achieve Partial Look-Ahead Performance with the Economy of Ripple Carry
• Supply Voltage and Ground on Corner Pins to Simplify P-C Board Layout

• Number of channels (#)
• 4
• Technology Family
• LS
• Input type
• Bipolar
• Output type
• Push-Pull
• Features
• High speed (tpd 10-50ns)

SN54LS283-SP的完整型号有：5962-7604301VEA，以下是这些产品的关键参数及官网采购报价：

5962-7604301VEA，工作温度：-55 to 125，封装：CDIP (J)-16，包装数量MPQ：25个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网5962-7604301VEA的批量USD价格：89.43（1000+）

5962-7604301VEA，工作温度：-55 to 125，封装：CDIP (J)-16，包装数量MPQ：25个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网5962-7604301VEA的批量USD价格：89.43（1000+）