These octal 3-STATE bus drivers are designed to provide the designer with flexibility in implementing a bus interface with memory, microprocessor, or communication systems. The output 3-STATE gating control is organized into two separate groups of four buffers. The DM74ALS240A control inputs symmetrically enable the respective outputs when set logic LOW, while the DM74ALS241A has complementary enable gating. 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.

• Advanced low power oxide-isolated ion-implanted Schottky TTL process
• Functional and pin compatible with the DM74LS counterpart
• Improved switching performance with less power dissipation compared with the DM74LS counterpart
• Switching response specified into 500ohm and 50 pF load
• Switching response specifications guaranteed over full temperature and V_CC supply range
• PNP input design reduces input loading
• Low level drive current: 74ALS = 24 mA