Descripción
74LS283
Sumador binario completo de 4 bits 74LS283, con acarreo. TTL
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En electrónica un sumador es un circuito lógico que calcula la operación suma. En los computadores modernos se encuentra en lo que se denomina Unidad aritmético lógica (ALU). Generalmente realizan las operaciones aritméticas en código binario decimal o BCD exceso 3, por regla general los sumadores emplean el sistema binario. En los casos en los que se esté empleando un complemento a dos para representar números negativos el sumador se convertirá en un sumador- substractor. Las entradas son A, B, Cin que son las entradas de bits A y B, y Cin es la entrada de acarreo. Por otra parte, la salida es S y Cout es la salida de acarreo. El sumador completo de 4 bits es una concatenación de 4 sumadores binarios completos de 1 bit, la concatenación se realiza a través de los terminales de acarreo saliente (Cin) y acarreo entrante (Cout).
Especificaciones
- Sumador de dos números binarios de 4 bits c/u
- Carry rápido: 10 ns típico
- Genera señal de carry cuando la suma excede 15
- Se pueden configurar varias unidades en cascada para sumar números de mayor cantidad de bits
- Puede operar con lógica positiva o negativa
- Tecnología: TTL Low Schottky (LS)
- Voltaje de alimentación: 4.75 V a 5.25 V
- Encapsulado: PDIP 16 pines
