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Product details

Parameters

Technology Family FCT Function Decoder/Demultiplexer Configuration 3:8 Channels (#) 1 Supply voltage (Min) (V) 4.75 Supply voltage (Max) (V) 5.25 Input type TTL Output type CMOS open-in-new Find other Encoders & decoders

Package | Pins | Size

CDIP (J) 16 135 mm² 19.65 x 6.92 LCCC (FK) 20 79 mm² 8.89 x 8.89 open-in-new Find other Encoders & decoders

Features

  • 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

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Description

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

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet 1-of-8 Decoders datasheet (Rev. B) Oct. 15, 2001
* SMD CY54FCT138T SMD 5962-92233 Jun. 21, 2016
Selection guide Logic Guide (Rev. AB) Jun. 12, 2017
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) Dec. 02, 2015
User guide LOGIC Pocket Data Book (Rev. B) Jan. 16, 2007
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection Jul. 08, 2004
Application note Selecting the Right Level Translation Solution (Rev. A) Jun. 22, 2004
More literature Logic Cross-Reference (Rev. A) Oct. 07, 2003
User guide CYFCT Parameter Measurement Information Apr. 02, 2001
Selection guide Advanced Bus Interface Logic Selection Guide Jan. 09, 2001

Design & development

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CAD/CAE symbols

Package Pins Download
CDIP (J) 16 View options
LCCC (FK) 20 View options

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