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CD74HCT139

Features: • Multifunction Capability - Binary to 1 of 4 Decoders or 1 to 4 Line Demultiplexer• Active Low Mutually Exclusive Outputs• Fanout (Over Temperature Range) - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads - Bus Driver Outputs . . . . . . . . . . . . . . ....

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SeekIC No. : 004312099 Detail

CD74HCT139: Features: • Multifunction Capability - Binary to 1 of 4 Decoders or 1 to 4 Line Demultiplexer• Active Low Mutually Exclusive Outputs• Fanout (Over Temperature Range) - Standard Out...

CD74HCT139 Data Sheet

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Part Number:
CD74HCT139
Supply Ability:
5000

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Product Details

Description



Features:

• Multifunction Capability
   - Binary to 1 of 4 Decoders or 1 to 4 Line Demultiplexer
• Active Low Mutually Exclusive Outputs
• Fanout (Over Temperature Range)
   - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
   - Bus Driver Outputs . . . . . . . . . . . . .  . .15 LSTTL Loads
• Wide Operating Temperature Range . . . -55oC to 125oC
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL Logic ICs
• HC Types
   - 2V to 6V Operation
   - High Noise Immunity: NIL = 30%, NIH = 30%of VCC at VCC = 5V
• HCT Types
   - 4.5V to 5.5V Operation
   - Direct LSTTL Input Logic Compatibility, VIL= 0.8V (Max), VIH = 2V (Min)
   - CMOS Input Compatibility, Il 1A at VOL, VOH
• Memory Decoding, Data Routing, Code Conversion


Pinout

Connection Diagram


Specifications

DC Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . .   -0.5V to 7V
DC Input Diode Current, IIK
    For VI < -0.5V or VI > VCC + 0.5V . . . . . . . . . . . . . . . . . . .. . .±20mA
DC Output Diode Current, IOK
    For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±20mA
DC Output Source or Sink Current per Output Pin, IO
    For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±25mA
DC VCC or Ground Current, ICC or IGND . . . . . . . . . . . . . . . . . .±50mA 


Description

The 'HC139 and 'HCT139 devices contain two independent binary to one of four decoders each with a single active low enable input (1E or 2E). Data on the select inputs (1A0 and 1A1 or 2A0 and 2A1) cause one of the four normally high outputs to go low.

If the enable input is high all four outputs remain high. For demultiplexer operation the enable input is the data input. The enable input also functions as a chip select when these devices are cascaded. CD74HCT139 is functionally the same as the CD4556B and is pin compatible with CD74HCT139.

The CD74HCT139 outputs of these devices can drive 10 low power Schottky TTL equivalent loads. The HCT logic family is functionally as well as pin equivalent to the LS logic family.




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