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Product details

Parameters

Technology Family AHC Function Decoder, Demultiplexer Configuration 2:4 Channels (#) 2 VCC (Min) (V) 2 VCC (Max) (V) 5.5 open-in-new Find other Encoders & decoders

Package | Pins | Size

PDIP (N) 16 181 mm² 19.3 x 9.4 SOIC (D) 16 59 mm² 9.9 x 6 SOP (NS) 16 80 mm² 10.2 x 7.8 SSOP (DB) 16 48 mm² 6.2 x 7.8 TSSOP (PW) 16 22 mm² 4.4 x 5 TVSOP (DGV) 16 23 mm² 3.6 x 6.4 VQFN (RGY) 16 14 mm² 4 x 3.5 open-in-new Find other Encoders & decoders

Features

  • Operating Range 2-V to 5.5-V
  • Designed Specifically for High-Speed Memory Decoders and Data-Transmission Systems
  • Incorporate Two Enable Inputs to Simplify Cascading and/or Data Reception
  • Latch-Up Performance Exceeds 250 mA Per JESD 17
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)

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Description

The ’AHC139 devices are dual 2-line to 4-line decoders/demultiplexers designed for 2-V to 5.5-V VCC operation. These devices are designed to be used in high-performance memory-decoding or data-routing applications requiring very short propagation delay times. In high-performance memory systems, these decoders can be used to minimize the effects of system decoding. When used with high-speed memories utilizing a fast enable circuit, the delay times of these decoders and the enable time of the memory usually are less than the typical access time of the memory. This means that the effective system delay introduced by the decoders is negligible.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet SN54AHC139, SN74AHC139 datasheet (Rev. L) Jun. 27, 2013
Selection guides Little Logic Guide 2018 (Rev. G) Jul. 06, 2018
Selection guides Logic Guide (Rev. AB) Jun. 12, 2017
Application notes How to Select Little Logic (Rev. A) Jul. 26, 2016
Application notes Implications of Slow or Floating CMOS Inputs (Rev. D) Jun. 23, 2016
Application notes Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) Dec. 02, 2015
User guides LOGIC Pocket Data Book (Rev. B) Jan. 16, 2007
More literature Design Summary for WCSP Little Logic (Rev. B) Nov. 04, 2004
Application notes Semiconductor Packing Material Electrostatic Discharge (ESD) Protection Jul. 08, 2004
Application notes Selecting the Right Level Translation Solution (Rev. A) Jun. 22, 2004
More literature Logic Cross-Reference (Rev. A) Oct. 07, 2003
Application notes Advanced High-Speed CMOS (AHC) Logic Family (Rev. C) Dec. 02, 2002
Application notes Texas Instruments Little Logic Application Report Nov. 01, 2002
Application notes TI IBIS File Creation, Validation, and Distribution Processes Aug. 29, 2002
User guides AHC/AHCT Designer's Guide February 2000 (Rev. D) Feb. 24, 2000
Application notes Benefits & Issues of Migrating 5-V and 3.3-V Logic to Lower-Voltage Supplies (Rev. A) Sep. 08, 1999
More literature Military Advanced High-Speed CMOS Logic (AHC/AHCT) Apr. 01, 1998
More literature Military Advanced High-Speed CMOS Logic (AHC/AHCT) (Rev. C) Apr. 01, 1998
Application notes Migration From 3.3-V To 2.5-V Power Supplies For Logic Devices Dec. 01, 1997
Application notes Bus-Interface Devices With Output-Damping Resistors Or Reduced-Drive Outputs (Rev. A) Aug. 01, 1997
Application notes CMOS Power Consumption and CPD Calculation (Rev. B) Jun. 01, 1997
Application notes Live Insertion Oct. 01, 1996

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
10
Description
This EVM is designed to support any logic device that has a D, DW, DB, NS, PW, P, N, or DGV package in a 14 to 24 pin count.
Features
  • Board design allows for versatility in evaluation
  • Supports a wide-range of logic devices
EVALUATION BOARDS Download
document-generic User guide
20
Description
Flexible EVM designed to support any logic or translation device that has a BQA, BQB, RGY (14-24 pin), RSV, RJW, or RHL package.
Features
  • Board design allows for versatility in evaluation
  • Supports a wide-range of logic and translation devices with included dual supply support
  • Board has 9 sections that can be broken apart for a smaller form factor

Design tools & simulation

SIMULATION MODELS Download
SCEJ188.ZIP (114 KB) - HSpice Model
SIMULATION MODELS Download
SCEM488.ZIP (26 KB) - IBIS Model

CAD/CAE symbols

Package Pins Download
PDIP (N) 16 View options
SO (NS) 16 View options
SOIC (D) 16 View options
SSOP (DB) 16 View options
TSSOP (PW) 16 View options
TVSOP (DGV) 16 View options
VQFN (RGY) 16 View options

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