74VHC157 PDF File ( Datasheet )

® 74VHC157 QUAD 2 CHANNEL MULTIPLEXER PRELIMINARY DATA s s s s s s s s s s HIGH SPEED: tPD = 4.1 ns (TYP.) at VCC = 5V LOW POWER DISSIPATION: ICC = 4 A (MAX.) at TA = 25 oC HIGH NOISE IMMUNITY: VNIH = VNIL = 28% VCC (MIN.) POWER DOWN PROTECTION ON INPUTS SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 8 mA (MIN) BALANCED PROPAGATION DELAYS: tPLH tPHL OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 5.5V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 157 IMPROVED LATCH-UP IMMUNITY LOW NOISE: VOLP =

74VHC157 Quad 2-Input Multiplexer November 1992 Revised April 1999 74VHC157 Quad 2-Input Multiplexer General Description The VHC157 is an advanced high speed CMOS Quad 2Channel Multiplexer fabricated with silicon gate CMOS technology. It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. It consists of four 2-input digital multiplexers with common select and enable inputs. When the ENABLE input is held “H” level, s