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74LS503 Datasheet 8-Bit Successive Approximation Register

Manufacturer: Fairchild (now onsemi)

General Description

The DM74LS503 register has an active LOW Enable (E) input that is used in cascading two or more packages for longer word lengths.

A HIGH signal on E, after a START operation, forces Q7 HIGH and prevents the device from accepting serial data.

With the E input of an DM74LS503 connected to the CC output of a preceding (more significant) device, the DM74LS503 will be inhibited until the preceding device is filled, causing its CC output to go LOW.

Overview

DM74LS503 8-Bit Successive Approximation Register March 1989 Revised March 2000 DM74LS503 8-Bit Successive Approximation Register (with Expansion Control).

Key Features

  • Performs serial-to-parallel conversion.
  • Expansion control for longer words.
  • Storage and control for successive approximation A to D conversion.
  • Low power Schottky version of 2503 Ordering Code: Order Number Package Number Package.