Dual Low Voltage CMOS 2-to-4 Decoder/Demultiplexer
MC74LCX139
Dual Low-Voltage CMOS 2-to-4 Decoder/Demultiplexer
With 5 V−Tolerant Inputs
The MC74LCX139 is a high perform...
Description
MC74LCX139
Dual Low-Voltage CMOS 2-to-4 Decoder/Demultiplexer
With 5 V−Tolerant Inputs
The MC74LCX139 is a high performance, 2−to−4 decoder/ demultiplexer operating from a 2.3 to 3.6 V supply. High impedance TTL compatible inputs significantly reduce current loading to input drivers while TTL compatible outputs offer improved switching noise performance. A VI specification of 5.5 V allows MC74LCX139 inputs to be safely driven from 5 V devices. The MC74LCX139 is suitable for memory address decoding and other TTL level bus oriented applications.
The MC74LCX139 high−speed 2−to−4 decoder/demultiplexer accepts two binary weighted inputs (A0, A1) and, when enabled, provides four mutually exclusive active−LOW outputs. The LCX139 features an active low Enable input. All outputs will be HIGH unless En is LOW. The LCX139 can be used as an 8−output demultiplexer by using one of the active−LOW Enable inputs as the data input and the other Enable input as a strobe. The Enable inputs which are not used must be permanently tied to ground.
Current drive capability is 24 mA at the outputs.
Features
Designed for 2.3 to 3.6 V VCC Operation 5 V Tolerant Inputs − Interface Capability With 5 V TTL Logic LVTTL Compatible LVCMOS Compatible 24 mA Balanced Output Sink and Source Capability Near Zero Static Supply Current (10 mA) Substantially Reduces
System Power Requirements
Latchup Performance Exceeds 500 mA ESD Performance:
Human Body Model >2000 V Machine Model >200 V
These ...
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