Product details

Technology family AHC Number of channels 1 Operating temperature range (°C) -40 to 85 Rating Catalog Supply current (max) (µA) 40
Technology family AHC Number of channels 1 Operating temperature range (°C) -40 to 85 Rating Catalog Supply current (max) (µA) 40
SOIC (D) 16 59.4 mm² (9.9 mm × 6 mm) TVSOP (DGV) 16 23.04 mm² (3.6 mm × 6.4 mm) SSOP (DB) 16 48.36 mm² (6.2 mm × 7.8 mm) PDIP (N) 16 181.42 mm² (19.3 mm × 9.4 mm) TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm) VQFN (RGY) 16 14 mm² (4 mm × 3.5 mm) SOP (NS) 16 79.56 mm² (10.2 mm × 7.8 mm)
  • Operating range 2V to 5.5V VCC
  • Designed specifically for high-speed memory decoders and data-transmission systems
  • Incorporate three enable inputs to simplify cascading and/or data reception
  • Latch-up performance exceeds 250mA per JESD 17
  • ESD protection exceeds JESD 22:
    • 2000V Human-Body Model (A114-A)
    • 1000V Charged-Device Model (C101)
  • Operating range 2V to 5.5V VCC
  • Designed specifically for high-speed memory decoders and data-transmission systems
  • Incorporate three enable inputs to simplify cascading and/or data reception
  • Latch-up performance exceeds 250mA per JESD 17
  • ESD protection exceeds JESD 22:
    • 2000V Human-Body Model (A114-A)
    • 1000V Charged-Device Model (C101)

The SNx4AHC138 decoders/demultiplexers are designed for high-performance memory-decoding and data-routing applications that require very short propagation-delay times. In high-performance memory systems, these decoders can be used to minimize the effects of system decoding. When employed 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.

The SNx4AHC138 decoders/demultiplexers are designed for high-performance memory-decoding and data-routing applications that require very short propagation-delay times. In high-performance memory systems, these decoders can be used to minimize the effects of system decoding. When employed 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

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* Data sheet SNx4AHC138 3-Line to 8-Line Decoders/Demultiplexers datasheet (Rev. N) PDF | HTML Jul 24, 2024

Design & development

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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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Evaluation board

14-24-NL-LOGIC-EVM — Logic product generic evaluation module for 14-pin to 24-pin non-leaded packages

14-24-NL-LOGIC-EVM is a flexible evaluation module (EVM) designed to support any logic or translation device that has a 14-pin to 24-pin BQA, BQB, RGY, RSV, RJW or RHL package.

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Simulation model

HSPICE MODEL OF SN74AHC138

SCEJ228.ZIP (98 KB) - HSpice model
Supported products & hardware
Simulation model

SN74AHC138 IBIS Model

SCEM510.ZIP (24 KB) - IBIS model
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
SOIC (D) 16 Ultra Librarian
TVSOP (DGV) 16 Ultra Librarian
SSOP (DB) 16 Ultra Librarian
PDIP (N) 16 Ultra Librarian
TSSOP (PW) 16 Ultra Librarian
VQFN (RGY) 16 Ultra Librarian
SOP (NS) 16 Ultra Librarian

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