54LVTH244A

www.DataSheet4U.com PRELIMINARY 3.3V ABT 8-Bit Octal Buffers/Drivers 54LVTH244A Logic Diagram Memory FEATURES: 3.3V ABT octal buffers/drivers with 3-state outputs RAD-PAK® radiation-hardened against natural space radiation Package: - 20 Pin RAD-PAK® flat package Operating temperature range: -55 to 125°C Supports mixed-mode signal operation -5V Input and Output Voltages with 3.3V VCC Supports mixed-mode signal operation - 5V input and output voltages with 3.3V VCC Supports unregulated battery operation down to 2.7V Typical VOLP (output ground bounce) < 0.8V at VCC=3.3V, TA=25°C Supports live insertion Bus-hold data inputs eliminate the need for external pullup resistors DESCRIPTION: Maxwell Technologies’ 54LVTH244A octal buffers/drivers micro-circuit is housed in a Rad-Pak® package. The 54LVTH244A is designed specifically for low voltage (3.3V) VCC operation, but with the capability to provide a TTL interface to a 5V system environment. The 54LVTH244A is organized as two 4-bit drivers with separate output enable (OE) inputs. When OE is low, the device passes data from the A inputs to the Y outputs. When OE is high, the outputs are in the high impedance state. The 54LVTH244A active bus hold circuitry is provided to prevent floating data inputs at a valid logic level and to eliminate the need for pullup resistors. Maxwell Technologies' patented RAD-PAK® packaging technology incorporates radiation shielding in the microcircuit package. It eliminates the...