NTE Electronics NTE4032B

The NTE4032B (positive logic) and NTE4038B (negative logic) are monolithic integrated circuits consisting of three serial adder circuits with a common clock and carry reset input. Each adder has two inputs for two serial data input signals and an inverting command signal. When the command signal is logic "1", the sum is inverted. Data words enter the adder LSB first; the sign bit follows. The output is the modulo-2 sum of the input bits plus the carry from the previous bit. For the NTE4032B, the carry is added only on the rising edge of the clock; for the NTE4038B, the carry is added only on the falling edge of the clock. Therefore, for spike-free operation, input data transitions should occur as soon as possible after the triggering edge. The carry is reset to logic "0" at the end of each word by applying a logic "1" signal to the carry reset input at the first bit position of the next word.

• Inverting inputs on all adders for sum-inversion applications
• Fully static operation: DC to 10MHz (typical) at VDD = 10V
• Buffered inputs and outputs
• Single-phase clock
• Standardized symmetrical output characteristics
• Quiescent current specified to 20V
• 5V, 10V, and 15V parametric ratings
• 100nA input current at 18V and +25°C