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CY74FCT138T

ACTIVE

1-of-8 Decoder

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Data sheet
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CY74FCT138T

ACTIVE
Data sheet Order now

Product details

Technology family FCT Number of channels 1 Operating temperature range (°C) -40 to 85 Rating Catalog Supply current (max) (µA) 200
Technology family FCT Number of channels 1 Operating temperature range (°C) -40 to 85 Rating Catalog Supply current (max) (µA) 200
SSOP (DBQ) 16 29.4 mm² (4.9 mm × 6 mm) SOIC (DW) 16 106.09 mm² (10.3 mm × 10.3 mm)
  • Function, Pinout, and Drive Compatible With FCT and F Logic
  • Reduced VOH (Typically = 3.3 V) Versions of Equivalent FCT Functions
  • Edge-Rate Control Circuitry for Significantly Improved Noise Characteristics
  • Ioff Supports Partial-Power-Down Mode Operation
  • Matched Rise and Fall Times
  • Fully Compatible With TTL Input and Output Logic Levels
  • Dual 1-of-8 Decoder With Enables
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)
  • CY54FCT138T
    • 32-mA Output Sink Current
    • 12-mA Output Source Current
  • CY74FCT138T
    • 64-mA Output Sink Current
    • 32-mA Output Source Current
  • Function, Pinout, and Drive Compatible With FCT and F Logic
  • Reduced VOH (Typically = 3.3 V) Versions of Equivalent FCT Functions
  • Edge-Rate Control Circuitry for Significantly Improved Noise Characteristics
  • Ioff Supports Partial-Power-Down Mode Operation
  • Matched Rise and Fall Times
  • Fully Compatible With TTL Input and Output Logic Levels
  • Dual 1-of-8 Decoder With Enables
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)
  • CY54FCT138T
    • 32-mA Output Sink Current
    • 12-mA Output Source Current
  • CY74FCT138T
    • 64-mA Output Sink Current
    • 32-mA Output Source Current

The \x92FCT138T devices are 1-of-8 decoders. These devices accept three binary weighted inputs (A0, A1, A2) and, when enabled, provide eight mutually exclusive active-low outputs (O\0\x96O\7). The \x92FCT138T devices feature three enable inputs: two active low (E\1, E\2) and one active high (E3 ).

All outputs are high unless E\1 and E\2 are low and E3 is high. This multiple-enable function allows easy parallel expansion of the device to a 1-of-32 (five lines to 32 lines) decoder with just four \x92FCT138T devices and one inverter.

These devices are fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

The \x92FCT138T devices are 1-of-8 decoders. These devices accept three binary weighted inputs (A0, A1, A2) and, when enabled, provide eight mutually exclusive active-low outputs (O\0\x96O\7). The \x92FCT138T devices feature three enable inputs: two active low (E\1, E\2) and one active high (E3 ).

All outputs are high unless E\1 and E\2 are low and E3 is high. This multiple-enable function allows easy parallel expansion of the device to a 1-of-32 (five lines to 32 lines) decoder with just four \x92FCT138T devices and one inverter.

These devices are fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet 1-of-8 Decoders datasheet (Rev. B) Oct 15, 2001
* User guide CYFCT Parameter Measurement Information Apr 2, 2001

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Evaluation board

14-24-LOGIC-EVM — Logic product generic evaluation module for 14-pin to 24-pin D, DB, DGV, DW, DYY, NS and PW packages

The 14-24-LOGIC-EVM evaluation module (EVM) is designed to support any logic device that is in a 14-pin to 24-pin D, DW, DB, NS, PW, DYY or DGV package,

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SSOP (DBQ) 16 Ultra Librarian
SOIC (DW) 16 Ultra Librarian
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