器件名称:
CD54AC2573A
功能描述:
Quad 2-Input Multiplexer Three-State, Non-Inverting
文件大小:
10.15KB 共1页
简 介:
S E M I C O N D U C T O R CD54AC257/3A CD54ACT257/3A Quad 2-Input Multiplexer Three-State, Non-Inverting Functional Diagram 1I0 2I0 3I0 4I0 1I1 2I1 3I1 4I1 S OE 2 4 5 11 7 14 3 9 6 10 12 13 1 15 4Y 3Y 2Y 1Y June 1997 COMPLETE DATA SHEET COMING SOON! Description The CD54AC257/3A and CD54ACT257/3A are quad 2-input multiplexers with three-state outputs. These devices utilize the Harris Advanced CMOS Logic technology. Each of these devices selects four bits of data from two sources under the control of a common Select input (S). The Output Enable (OE) is active LOW. When OE is HIGH, all of the outputs (Y) are in the high-impedance state regardless of all other input conditions. Moving data from two groups of registers to four common output buses is a common use of the CD54AC/ACT257/3A. The state of the Select input determines the particular register from which the data comes. The CD54AC/ACT257/3A can also be used as function generators. The CD54AC257/3A and CD54ACT257/3A are supplied in 16 lead dual-in-line ceramic packages (F sufx). ACT INPUT LOAD TABLE INPUT Data S OE NOTE: 1. Unit load is ICC limit specied in DC Electrical Specications Table, e.g., 2.4mA Max at +25oC. UNIT LOAD (NOTE 1) 0.83 1.27 1.27 Absolute Maximum Ratings DC Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +6V DC Input Diode Current, IIK For VI < -0.5V or VI > VCC + 0.5V . . . . . . . . . . . . . . . . . . . . . .±20mA DC Output Diode Current, IOK For VO < -0.5V or VO > VCC……
