器件名称:
CD54AC138
功能描述:
3-to-8-Line Decoders/Demultiplexers
文件大小:
39.04KB 共7页
简 介:
CD54/74AC138, CD54/74ACT138, CD74AC238, CD74ACT238 Data sheet acquired from Harris Semiconductor SCHS234A September 1998 - Revised May 2000 3-to-8-Line Decoders/Demultiplexers Description The ’AC138, ’ACT138, CD74AC238, and CD74ACT238 are 3-to-8-line decoders/demultiplexers that utilize Advanced CMOS Logic technology. Both circuits have three binary select inputs (A0, A1, and A2). If the device is enabled, these inputs determine which one of the eight normally HIGH outputs of the AC/ACT138 will go LOW or which on of the normally LOW outputs of the AC/ACT238 will go HIGH. Two active LOW and one active HIGH enables (E1, E2 and E3) are provided to simplify the cascading of these devices. Features ’AC138, ’ACT138. . . . . . . . . . . . . . . . . . . . . . . . Inverting CD74AC238, CD74ACT238 . . . . . . . . . . . Non-Inverting Buffered Inputs Typical Propagation Delay - 5ns at VCC = 5V, TA = 25oC, CL = 50pF [ /Title (CD74 AC138 , CD74 ACT13 8, CD74 AC238 , CD74 ACT23 8) /Subject (3to-8Line Decoders/De multiplexers) /Autho r () /Keywords (Harris Semiconductor, Advan ced Exceeds 2kV ESD Protection MIL-STD-883, Method 3015 SCR-Latchup-Resistant CMOS Process and Circuit Design Speed of Bipolar FAST/AS/S with Signicantly Reduced Power Consumption Balanced Propagation Delays AC Types Feature 1.5V to 5.5V Operation and Balanced Noise Immunity at 30% of the Supply ±24mA Output Drive Current - Fanout to 15 FAST ICs - Drives 50 Transmission Lines Ordering Information PART NU……
