HD74HC151 Datasheet | Hitachi Semiconductor

1 of-8-line Data Selector/Multiplexer Description The HD74HC151 selects one of the 8 data sources, depending on the address presented on the A, B and C inputs. It Features both true (Y) and plement (W) outputs. The strobe input must be at a low logic level to enable this multiplexer. A high logic level at the storobe forces the W output high and the Y output low. Features - - - - - High Speed Operation: tpd (Any D to Y or W) = 18 ns typ (C L = 50 p F) High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Function Table Inputs Select C X L L L L H H H H X : B X L L H H L L H H Irrelevant A X L H L H L H L H Strobe S H L L L L L L L L Outputs Y L D0 D1 D2 D3 D4 D5 D6 D7 W H D0 D1 D2 D3 D4 D5 D6 D7 Pin Arrangement 3 1 2 2 1 3 0 4 Y 5 Outputs W 6 Strobe 7 GND 8 (Top view) W S A B D2 D1 D0 Y D3 D4 D5 D6 D7 16 VCC 15 4 14 5 13 6 12 7 11 A 10 B 9 C Data Select Data Inputs Data Inputs Logic Diagram D0 D1 D2 D3 Y D4 W D5 D6 D7 A B C Strobe DC Characteristics Ta = 25°C Item Input voltage Symbol VIH Ta = - 40 to +85°C Max - - - 0.5 1.35 1.8 - - - - - 0.1 0.1 0.1 0.33 0.33 ±1.0 40 µA µA I OL = 4 m A I OL = 5.2 m A Vin = VCC or GND Vin = VCC or GND, Iout = 0 µA V I OH = - 4 m A I OH = - 5.2 m A Vin = VIH or VIL I OL = 20 µA V Vin = VIH or VIL I OH = - 20 µA V Unit V Test Conditions VCC (V) Min Typ Max Min 2.0 4.5 6.0 1.5 -...