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CD74ACT257M96E4 Datasheet(PDF) 1 Page - Texas Instruments |
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CD74ACT257M96E4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 8 page 1 Data sheet acquired from Harris Semiconductor SCHS248A Features • ’AC257, ’ACT257. . . . . . . . . . . . . Non-Inverting Outputs • CD74ACT258 . . . . . . . . . . . . . . . . . . . Inverting Outputs • Buffered Inputs • Typical Propagation Delay - 4.4ns at VCC = 5V, TA = 25 oC, 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 50 Ω Transmission Lines Pinout CD54AC257, CD54ACT257 (CERDIP) CD74AC257, CD74ACT257, CD74ACT258 (PDIP, SOIC) TOP VIEW Description 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. 14 15 16 9 13 12 11 10 1 2 3 4 5 7 6 8 S 1I0 1I1 1Y 2I0 2I1 GND 2Y VCC 4I0 4I1 4Y 3I0 3I1 3Y OE AC/ACT257 ACT258 ACT258 AC/ACT257 VCC 4I0 4I1 4Y 3I0 3I1 3Y OE S 1I0 1I1 1Y 2I0 2I1 GND 2Y Ordering Information PART NUMBER TEMP. RANGE (oC) PACKAGE CD54AC257F3A -55 to 125 16 Ld CERDIP CD74AC257E 0 to 70oC, -40 to 85, -55 to 125 16 Ld PDIP CD74AC257M 0 to 70oC, -40 to 85, -55 to 125 16 Ld SOIC CD54ACT257F3A -55 to 125 16 Ld CERDIP CD74ACT257E 0 to 70oC, -40 to 85, -55 to 125 16 Ld PDIP CD74ACT257M 0 to 70oC, -40 to 85, -55 to 125 16 Ld SOIC CD74ACT258E 0 to 70oC, -40 to 85, -55 to 125 16 Ld PDIP CD74ACT258M 0 to 70oC, -40 to 85, -55 to 125 16 Ld SOIC NOTES: 1. When ordering, use the entire part number. Add the suffix 96 to obtain the variant in the tape and reel. 2. Wafer and die for this part number is available which meets all electrical specifications. Please contact your local TI sales office or customer service for ordering information. August 1998 - Revised May 2000 CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. FAST™ is a Trademark of Fairchild Semiconductor. Copyright © 2000, Texas Instruments Incorporated CD54/74AC257, CD54/74ACT257, CD74ACT258 Quad 2-Input Multiplexer with Three-State Outputs |
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