Product details

Technology family HCT Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 5.5 Number of channels 8 IOL (max) (mA) 6 Supply current (max) (µA) 80 IOH (max) (mA) -6 Input type TTL-Compatible CMOS Output type 3-State Features Balanced outputs, Input clamp diode, Very high speed (tpd 5-10ns) Rating Catalog Operating temperature range (°C) -40 to 125
Technology family HCT Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 5.5 Number of channels 8 IOL (max) (mA) 6 Supply current (max) (µA) 80 IOH (max) (mA) -6 Input type TTL-Compatible CMOS Output type 3-State Features Balanced outputs, Input clamp diode, Very high speed (tpd 5-10ns) Rating Catalog Operating temperature range (°C) -40 to 125
PDIP (N) 20 228.702 mm² 24.33 x 9.4 SOIC (DW) 20 131.84 mm² 12.8 x 10.3 SOP (NS) 20 98.28 mm² 12.6 x 7.8 SSOP (DB) 20 56.16 mm² 7.2 x 7.8 TSSOP (PW) 20 41.6 mm² 6.5 x 6.4 VSSOP (DGS) 20 24.99 mm² 5.1 x 4.9
  • Operating voltage range of 4.5 V to 5.5 V
  • High-current outputs drive up to 15 LSTTL loads
  • Low power consumption: 80-µA maximum I CC
  • Typical t pd = 13 ns
  • ±6-mA output drive at 5 V
  • Low input current of 1 µA maximum
  • Inputs are TTL-voltage compatible
  • 3-state outputs drive bus lines and buffer memory address registers
  • Operating voltage range of 4.5 V to 5.5 V
  • High-current outputs drive up to 15 LSTTL loads
  • Low power consumption: 80-µA maximum I CC
  • Typical t pd = 13 ns
  • ±6-mA output drive at 5 V
  • Low input current of 1 µA maximum
  • Inputs are TTL-voltage compatible
  • 3-state outputs drive bus lines and buffer memory address registers

These octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The SNx4HCT244 devices are organized as two 4-bit buffers or drivers with separate output-enable ( OE) inputs. When OE is low, the device passes non inverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.

These octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The SNx4HCT244 devices are organized as two 4-bit buffers or drivers with separate output-enable ( OE) inputs. When OE is low, the device passes non inverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.

Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 12
Type Title Date
* Data sheet SNx4HCT244 Octal Buffers and Line Drivers With 3-State Outputs datasheet (Rev. H) PDF | HTML 21 Aug 2023
Application note Implications of Slow or Floating CMOS Inputs (Rev. E) 26 Jul 2021
Selection guide Logic Guide (Rev. AB) 12 Jun 2017
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 02 Dec 2015
User guide LOGIC Pocket Data Book (Rev. B) 16 Jan 2007
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004
User guide Signal Switch Data Book (Rev. A) 14 Nov 2003
Application note TI IBIS File Creation, Validation, and Distribution Processes 29 Aug 2002
Application note CMOS Power Consumption and CPD Calculation (Rev. B) 01 Jun 1997
Application note Designing With Logic (Rev. C) 01 Jun 1997
Application note SN54/74HCT CMOS Logic Family Applications and Restrictions 01 May 1996
Application note Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc 01 Apr 1996

Design & development

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

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,

User guide: PDF | HTML
Not available on TI.com
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.

User guide: PDF | HTML
Not available on TI.com
Simulation model

SN74HCT244 Behavioral SPICE Model

SCLM200.ZIP (7 KB) - PSpice Model
Package Pins Download
PDIP (N) 20 View options
SOIC (DW) 20 View options
SOP (NS) 20 View options
SSOP (DB) 20 View options
TSSOP (PW) 20 View options
VSSOP (DGS) 20 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos