Multiplexer 1-Element CMOS 3-ST 8-IN 16-Pin SOIC T/R

The ’AC257, ’ACT257 and CD74ACT258 are quad 2-input multiplexers with three-state outputs that utilize 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 or 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 ’AC257, ’ACT257, and CD74ACT258. The state of the Select input determines the particular register from which the data comes. The ’AC257, ’ACT257 and CD74ACT258 can also be used as function generators.

’AC257, ’ACT257. . . . . . . . . . . . . Non-Inverting Outputs

CD74ACT258 . . . . . . . . . . . . . . . . . . . Inverting Outputs

Buffered Inputs

Typical Propagation Delay
- 4.4ns at V_CC = 5V, T_A = 25°C, C_L = 50pF

Exceeds 2kV ESD Protection MIL-STD-883, Method 3015

SCR-Latchup-Resistant CMOS Process and Circuit Design

Speed of Bipolar FAST™/AS/S with Significantly 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 50O Transmission Lines

Characterized for operation from –40° to 85°C