54ABT244

54ABT244 Octal Buffer/Line Driver with TRI-STATE Outputs July 1998 54ABT244 Octal Buffer/Line Driver with TRI-STATE ® Outputs General Description The ’ABT244 is an octal buffer and line driver with TRI-STATE outputs designed to be employed as a memory and address driver, clock driver, or bus-oriented transmitter/ receiver. n Guaranteed simultaneous switching, noise level and dynamic threshold performance n Guaranteed latchup protection n High impedance glitch free bus loading during entire power up and power down cycle n Nondestructive hot insertion capability n Disable time less than enable time to avoid bus contention n Standard Microcircuit Drawing (SMD) 5962-9214701 Features n Non-inverting buffers n Output sink capability of 48 mA, source capability of 24 mA n Output switching specified for both 50 pF and 250 pF loads Ordering Code Military 54ABT244J-QML 54ABT244W-QML 54ABT244E-QML Package Number J20A W20A E20A 20-Lead Ceramic Dual-In-Line 20-Lead Cerpack 20-Lead Ceramic Leadless Chip Carrier, Type C Package Description Connection Diagrams Pin Assignment for DIP and Flatpak Pin Assignment for LCC DS100203-2 DS100203-1 Pin Names OE1, OE2 I0–I7 O0–O7 Description Output Enable Input (Active Low) Inputs Outputs Truth Table OE1 H L L I0–3 X H L O0–3 Z H L OE2 H L L I4–7 X H L O4–7 Z H L H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance TRI-STATE ® is a registered trademark of National Semiconductor Corporation. © 1998 National Semicon...