MC74LCX138 Datasheet | onsemi

DATA SHEET .onsemi. Low-Voltage CMOS 3-to-8 Decoder/Demultiplexer With 5 V- Tolerant Inputs The MC74LCX138 is a high performance, 3- to- 8 decoder/demultiplexer operating from a 1.65 to 5.5 V supply. High impedance TTL patible inputs significantly reduce current loading to input drivers while TTL patible outputs offer improved switching noise performance. A VI specification of 5.5 V allows MC74LCX138 inputs to be safely driven from 5 V devices. The MC74LCX138 is suitable for memory address decoding and other TTL level bus-oriented applications. The MC74LCX138 high-speed 3- to- 8 decoder/demultiplexer accepts three binary weighted inputs (A0, A1, A2) and, when enabled, provides eight mutually exclusive active-LOW outputs (O0- O7). The LCX138 Features three Enable inputs, two active-LOW (E1, E2) and one active-HIGH (E3). All outputs will be HIGH unless E1 and E2 are LOW, and E3 is HIGH. This multiple enabled function allows easy parallel expansion of the device to a 1- of- 32 (5 lines to 32 lines) decoder with just four LCX138 devices and one inverter (see Figure 1). The LCX138 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 inputs as strobes. The Enable inputs which are not used must be permanently tied to their appropriate active-HIGH or active-LOW state. Current drive capability is 24 m A at the outputs at 3 V. Features - Designed for 1.65 V to 5.5 V VCC Operation - 5 V Tolerant Inputs - Interface Capability With 5 V TTL Logic - LVTTL patible - LVCMOS patible - 24 m A Balanced Output Sink and Source Capability at 3 V - Near Zero Static Supply Current (10 m A) Substantially Reduces System Power Requirements - Latchup Performance Exceeds 100 m A - ESD Performance: Human Body Model >2000 V - - Q Suffix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC- Q100 Qualified and PPAP Capable - These Devices are Pb-Free, Halogen Free/BFR...