MC74LCX138: Low Voltage CMOS 3-to-8 Decoder/Demultiplexer

Description: The MC74LCX138 is a high performance, 3-to-8 decod...
  • The MC74LCX138 is a high performance, 3-to-8 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 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.
  • Features
  • Designed for 2.3 V to 3.6 V VCC Operation
  • 5V Tolerant Inputs - Interface Capability With 5V TTL Logic
  • LVTTL Compatible
  • LVCMOS Compatible
  • 24mA Balanced Output Sink and Source Capability
  • Near Zero Static Supply Current (10mA) Substantially Reduces System Power Requirements
  • Latchup Performance Exceeds 500mA
  • ESD Performance: Human Body Model >2000V;
    Machine Model >200V
  • Pb-Free Packages are Available*
  • Technical Documentation & Design Resources
    Product Change Notification
    Availability and Samples
    MC74LCX138DR2G
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Low Voltage CMOS 3-to-8 Decoder/Demultiplexer
  • Package Type: SOIC-16
  • Package Case Outline: 751B-05
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2500
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  • MC74LCX138DTG
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Low Voltage CMOS 3-to-8 Decoder/Demultiplexer
  • Package Type: TSSOP-16
  • Package Case Outline: 948F-01
  • MSL: 1
  • Container Type: TUBE
  • Container Qty: 96
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  • MC74LCX138DTR2G
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Low Voltage CMOS 3-to-8 Decoder/Demultiplexer
  • Package Type: TSSOP-16
  • Package Case Outline: 948F-01
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2500
  • Inventory

  • Market Leadtime (weeks):17 to 20
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  • NLV74LCX138DR2G
  • Status: Active
  • Compliance: AEC Qualified PPAP Capable Pb-free Halide free 
  • Description: Low Voltage CMOS 3-to-8 Decoder/Demultiplexer
  • Package Type: SOIC-16
  • Package Case Outline: 751B-05
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2500
  • Specifications
  • Channels:
  • VCC Min (V):
  • VCC Max (V): 3.6 
  • tpd Max (ns):
  • IO Max (mA): null 
  • Package Type: SOIC-16  TSSOP-16 
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