SN74ABTH245 - Octal Bus Transceivers With 3-State Outputs

These octal bus transceivers are designed for asynchronous communication between data buses. The devices transmit data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE\) input can be used to disable the device so the buses are effectively isolated.

When V_CC is between 0 and 2.1 V, the device is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 2.1 V, OE\ should be tied to V_CC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

This device is fully specified for hot-insertion applications using I_off and power-up 3-state. The I_off circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.

The SN54ABTH245 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ABTH245 is characterized for operation from -40°C to 85°C.

Products containing the "SN74ABTH245" keyword are: SN74ABTH245DBR , SN74ABTH245DBR , SN74ABTH245DBR ABH245 , SN74ABTH245DGVR , SN74ABTH245DGVR , SN74ABTH245DGVRE4 , SN74ABTH245DGVRG4 , SN74ABTH245DW , SN74ABTH245DW , SN74ABTH245DWE4 , SN74ABTH245DWE4 , SN74ABTH245DWG4 , SN74ABTH245DWR , SN74ABTH245DWR , SN74ABTH245DWRG4 , SN74ABTH245DWRG4 , SN74ABTH245N , SN74ABTH245N , SN74ABTH245PWR , SN74ABTH245PWR

• State-of-the-Art EPIC-II B^TM BiCMOS Design Significantly Reduces Power Dissipation
• Latch-Up Performance Exceeds 500 mA Per JESD 17
• Typical V_OLP (Output Ground Bounce) < 1 V at V_CC = 5 V, T_A = 25°C
• I_off and Power-Up 3-State Support Hot Insertion
• High-Drive Outputs (-32-mA I_OH, 64-mA I_OL)
• Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
• Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), Thin Shrink Small-Outline (PW), and Thin Very Small-Outline (DGV) Packages, Ceramic Chip Carriers (FK), Plastic (N) and Ceramic (J) DIPs, and Ceramic Flat (W) Package

EPIC-IIB is a trademark of Texas Instruments Incorporated.