NTE3881 查看數據表（PDF） - NTE Electronics

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NTE3881

Integrated Circuit NMOS, Parallel I/O Interface (PIO), 4MHz

NTE Electronics 

NTE3881

Integrated Circuit

NMOS, Parallel I/O Interface (PIO), 4MHz

Description:

The NTE3881 Parallel I/O Circuit (PIO) is a programmable, two port device which provides a TTL

compatible interface between peripheral devices and the NTE3880. The Central Processing Unit

(CPU) can configure the NTE3881 to interface with a wide range of peripheral devices with no other

external logic required. Typical peripheral devices that are fully compatible with the NTE3881 include

most keyboard, paper tape readers and punches, printers, PROM programmers, etc. The NTE3881

utilizes N channel silicon gate depletion load technology and is packaged in a 40–Lead DIP type package.

Features:

D Two Independent 8–Bit Bidirectional Peripheral Interface Ports with “Handshake” Data Transfer

Control

D Interrupt Driven “Handshake” for Fast Response

D Any One of Four Distinct Modes of Operation may be Selected for a Port, including:

Byte Output

Byte Input

Byte Bidirectional Bus (Available on Port A Only)

Bit Control Mode

D All with Interrupt Controlled Handshake

D Daisy Chain Priority Interrupt Logic Included to Provide for Automatic Interrupt Vectoring without

External Logic

D Eight Outputs are Capable of Driving Darlington Transistors

D All Inputs and Outputs Fully TTL Compatible

D Single 5 Volt Supply and Single Phase Clock Required

Absolute Maximum Ratings:

Temperature Under Bias . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +70°C

Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C

Voltage On Any Pin With Respect to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3V to +7V

Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6W

Note 1. Stresses above those listed under “Absolute Maximum Ratings” may cause permanent

damage to the device. This is a stress rating only functional operation of the device at these

or any other condition above those indicated in the operational sections of this specification

is not implied. Exposure to absolute maximum rating conditions for extended periods may

affect device reliability.

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