54LVTH244A Datasheet | Maxwell Technologies

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 need for box shielding while providing the required radiation shielding for a lifetime in orbit or a space mission. This product is available with packaging and screening up to Class S. 12.19.01 Rev 1 All data sheets are subject to change without notice (858) 503-3300 - Fax: (858) 503-3301 - .maxwell. ©2001 Maxwell Technologies All rights reserved. PRELIMINARY 3.3V ABT 8-Bit Octal Buffers/Drivers TABLE 1. PINOUT DESCRIPTION PIN 1, 19 2, 4, 6, 8 3, 5, 7, 9 10 11, 13, 15, 17 12, 14, 16, 18 20 SYMBOL 1OE-2OE IA1-IA4 2Y4-2Y1 GND 2A1-2A4 1Y4-1Y1 VCC Input Output Ground Input Output...