DM74ALS244A

Features:

* Advanced low power oxide-isolated ion-implanted Schottky TTL process
* Functional and pin compatible with the 74LS counterpart
*Improved switching performance with less power dissipation compared with the 74LS counterpart
*Switching response specified into 500Ω and 50 pF load
* Switching response specifications guaranteed over full temperature and VCC supply range
* PNP input design reduces input loading


Application




Specifications

Supply Voltage, VCC....................................................................... 7V
Input Voltage .................................................................................7V
Voltage Applied to Disabled Output............................................. 5.5V
Operating Free Air Temperature Range ......................0°C to +70°C
Storage Temperature Range ................................−65°C to +150°C
Typical _JA
N Package........................................................................ 60.5°C/W
M Package ........................................................................79.8°C/W


Description

This DM74ALS244A octal 3-STATE bus driver is designed to provide the designer with flexibility in implementing a bus interface with memory, microprocessor, or communication systems. This device offers 64-extended temperature Grade product guaranteeing performance from −40°C to +85°C. The out-put 3-STATE gating control is organized into two separate groups of four buffers, and both control inputs enable the respective outputsof DM74ALS244A when set logic LOW. The 3-STATE circuitry contains a feature that maintains the buffer outputs in 3-STATE (high impedance state) during power supply ramp-up or ramp-down. This eliminates bus glitching problems that arise during power-up and power-down.