NTE6821

Supply Voltage, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 to +7V
Input Voltage, V_in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 to +7V
Operating Temperature Range, T_A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0° to +70°C
Storage Temperature Range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55° to +150°C
Thermal Resistance, Junction to Ambient, R_JA . . . . . . . . . . . . . . . . . . . . . . . .  82.5°C/W

Note 1. This device contains circuitry to protect the inputs against damage due to high static voltages or electric fields;  however, it is advised that normal precautions be taken to avoid application of any voltage higher than maximum rated voltages to this high impedance.

The NTE6821 is a peripheral interface adapter (PIA) in a 40Lead DIP type package capable of interfacing the Microprocessing Unit (MPU) to peripherals through two 8Bit bidirectional peripheral data buses and four control lines.  No external logic is required for interfacing to most peripheral devices.

The functional configuration of the PIA NTE6821 is programmed by the MPU during system initialization.  Each of the peripheral data lines can be programmed to act as an input or output, and each of the four control/interrupt lines may be programmed for one of several control modes.  This allows a high degree of flexibility in the overall operation of the interface.