DM74ALS245A

Features:

 Advanced oxide-isolated, ion-implanted Schottky TTL process
Non-inverting logic output
Glitch free bus during power up and down
3-STATE outputs independently controlled on A and B buses
Low output impedance to drive terminated transmission lines to 133Ω
Switching response specified into 500Ω/50 pF
Specified to interface with CMOS at VOH = VCC − 2V
PNP inputs to reduce input loading
Switching specifications guaranteed over full tempera-ture and VCC range


Specifications

Supply Voltage                                                              7V
Input Voltage
    Control Inputs                                                           7V
    I/O Ports                                                                 5.5V
Operating Free Air Temperature Range        0°C to +70°C
Storage Temperature Range                  −65°C to +150°C
Typical JA
    N Package                                                      53.0°C/W
    M Package                                                      72.0°C/W


Description

This advanced low power Schottky device DM74ALS245A contains 8 pairs of 3-STATE logic elements configured as octal bus trans-ceivers. These DM74ALS245A circuits are designed for use in memory,microprocessor systems and in asynchronous bidirectional data buses. Two way communication between buses is controlled by the (DIR) input. Data transmits either from the A bus to the B bus or from the B bus to the A bus. Both the driver and receiver outputs of DM74ALS245A  can be disabled via the (G)
enable input which causes outputs to enter the high imped- ance mode so that the buses are effectively isolated.