SCLS266O December   1995  – July 2024 SN54AHCT138 , SN74AHCT138

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Description
  4. 3 Pin Configuration and Functions
  5. 4 Specifications
    1. 4.1 Absolute Maximum Ratings
    2. 4.2 ESD Ratings
    3. 4.3 Recommended Operating Conditions
    4. 4.4 Thermal Information
    5. 4.5 Electrical Characteristics
    6. 4.6 Switching Characteristics
    7. 4.7 Operating Characteristics
    8. 4.8 Typical Characteristics
  6. 5 Parameter Measurement Information
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Power Supply Recommendations
    3. 7.3 Layout
      1. 7.3.1 Layout Guidelines
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Links
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • W|16
  • J|16
  • FK|20
Thermal pad, mechanical data (Package|Pins)
Orderable Information

2 Description

The ’AHCT138 3-line to 8-line decoders/demultiplexers are designed to be used in high-performance memory-decoding and data-routing applications that require very short propagation-delay times. In high-performance memory systems, this decoder can be used to minimize the effects of system decoding.

Device Information
PART NUMBER PACKAGE (1) PACKAGE SIZE (2) BODY SIZE (3)
SNx4AHCT138 RGY (VQFN, 16) 4mm x 3.5mm 4mm x 3.5mm
N (PDIP, 16) 19.3 mm × 9.4 mm 19.32mm x 6.35mm
D (SOIC, 16) 9.9 mm × 6 mm 9.90mm x 3.90mm
NS (SOP, 16) 10.2mm x 7.8mm 10.20mm x 5.30mm
DB (SSOP, 16) 6.2mm × 7.8mm 6.20mm x 5.30mm
PW (TSSOP , 16) 5mm × 6.4mm 5.00mm x 4.40mm
DGV (TVSOP, 16) 3.6mm x 6.4mm 3.6mm x 4.4mm
(2) The package size (length × width) is a nominal value and includes pins, where applicable
(3) The body size (length × width) is a nominal value and does not include pins.
SN54AHCT138 SN74AHCT138 Logic Diagram (Positive Logic) Logic Diagram (Positive Logic)