器件名称:
54AC244
功能描述:
Octal Buffer/Line Driver with TRI-STATE Outputs
文件大小:
136.75KB 共8页
简 介:
54AC244 54ACT244 Octal Buffer/Line Driver with TRI-STATE Outputs August 1998 54AC244 54ACT244 Octal Buffer/Line Driver with TRI-STATE Outputs General 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 mA n ’ACT244 has TTL-compatible 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 www.national.com 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 www.national.com 2 Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications……
