54ACT244 Datasheet | National Semiconductor

Description The ’AC/’ACT244 is an octal buffer and line driver designed to be employed as a memory address driver, clock driver and bus-oriented transmitter/receiver which provides improved PC board density. Features n ICC and IOZ reduced by 50% n TRI-STATE outputs drive bus lines or buffer memory address registers n Outputs source/sink 24 m A n ’ACT244 has TTL-patible inputs n Standard Microcircuit Drawing (SMD) - ’AC244: 5962-87552 - ’ACT244: 5962-87760 Logic Symbol IEEE/IEC Pin Names OE1, OE2 I0- I7 O0- O7 Inputs Outputs Description TRI-STATE Output Enable Inputs DS100282-1 TRI-STATE ® is a registered trademark of National Semiconductor Corporation. FACT ® is a registered trademark of Fairchild Semiconductor Corporation. © 1998 National Semiconductor Corporation DS100282 .national. Connection Diagrams Pin Assignment for DIP and Flatpak Truth Tables Inputs OE1 L L H In L H X Outputs (Pins 12, 14, 16, 18) L H Z H = HIGH Voltage Level L = LOW Voltage Level Inputs OE2 L L H DS100282-2 Outputs (Pins 3, 5, 7, 9) L H Z L In H X X = Immaterial Z = High Impedance Pin Assignment for LCC DS100282-3 .national. Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (VCC) DC Input Diode Current (IIK) VI = - 0.5V VI = VCC + 0.5V DC Input Voltage (VI) DC Output Diode Current (IOK) VO = - 0.5V VO = VCC + 0.5V DC Output Voltage (VO) DC Output Source or Sink Current (IO) DC VCC or Ground Current per Output Pin (ICC or IGND) Storage Temperature (TSTG) Junction Temperature (TJ) CDIP - 0.5V to +7.0V - 20 m A +20 m A - 0.5V to VCC + 0.5V - 20 m A +20 m A - 0.5V to VCC + 0.5V Remended Operating Conditions Supply Voltage (VCC) ’AC ’ACT Input Voltage (VI) Output Voltage (VO) Operating Temperature (TA) 54AC/ACT Minimum Input Edge Rate (∆V/∆t) ’AC Devices VIN from 30% to 70% of VCC VCC @ 3.3V, 4.5V, 5.5V Minimum Input Edge Rate...