74F253

74F253 Dual 4-Input Multiplexer with 3-STATE Outputs April 1988 Revised August 1999 74F253 Dual 4-Input Multiplexer with 3-STATE Outputs General Description The 74F253 is a dual 4-input multiplexer with 3-STATE outputs. It can select two bits of data from four sources using common select inputs. The output may be individually switched to a high impedance state with a HIGH on the respective Output Enable (OE) inputs, allowing the outputs to interface directly with bus oriented systems. Features s Multifunction capability s Non-inverting 3-STATE outputs Ordering Code: Order Number 74F253SC 74F253SJ 74F253PC Package Number M16A M16D N16E Package Description 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Symbols Connection Diagram IEEE/IEC © 1999 Fairchild Semiconductor Corporation DS009505 www.fairchildsemi.com 74F253 Unit Loading/Fan Out Pin Names I0a–I3a I0b–I3b S0–S1 OEa OEb Z a, Zb Description Side A Data Inputs Side B Data Inputs Common Select Inputs Side A Output Enable Input (Active LOW) Side B Output Enable Input (Active LOW) 3-STATE Outputs U.L. HIGH/LOW 1.0/1.0 1.0/1.0 1.0/1.0 1.0/1.0 1.0/1.0 150/40(33.3) Input IIH/IIL Output IOH/IOL 20 µA/−0.6 mA 20 µA/−0.6 mA 20 µA/−0.6 mA 20 µA/−0.6 mA...