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SN74HCT244

ACTIVE

Eight-channel 4.5-V to 5.5-V buffers with TTL-compatible CMOS inputs and tri-state outputs

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Data sheet

SN74HCT244

ACTIVE
Data sheet Order now

Product details

Technology family HCT 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 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
TSSOP (PW) 20 41.6 mm² (6.5 mm × 6.4 mm) VSSOP (DGS) 20 24.99 mm² (5.1 mm × 4.9 mm) SOIC (DW) 20 131.84 mm² (12.8 mm × 10.3 mm) SSOP (DB) 20 56.16 mm² (7.2 mm × 7.8 mm) SOP (NS) 20 98.28 mm² (12.6 mm × 7.8 mm) PDIP (N) 20 228.702 mm² (24.33 mm × 9.4 mm)
  • Operating voltage range of 4.5V to 5.5V
  • High-current outputs drive up to 15 LSTTL loads
  • Low power consumption: 80µA maximum ICC
  • Typical tpd = 13ns
  • ±6mA output drive at 5V
  • Low input current of 1µA maximum
  • Inputs are TTL-voltage compatible
  • 3-state outputs drive bus lines and buffer memory address registers
  • Operating voltage range of 4.5V to 5.5V
  • High-current outputs drive up to 15 LSTTL loads
  • Low power consumption: 80µA maximum ICC
  • Typical tpd = 13ns
  • ±6mA output drive at 5V
  • Low input current of 1µA 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.
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Technical documentation

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* Data sheet SNx4HCT244 Octal Buffers and Line Drivers With 3-State Outputs datasheet (Rev. I) PDF | HTML Feb 6, 2025

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

SN74HCT244 Behavioral SPICE Model

SCLM200.ZIP (7 KB) - PSpice model
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
TSSOP (PW) 20 Ultra Librarian
VSSOP (DGS) 20 Ultra Librarian
SOIC (DW) 20 Ultra Librarian
SSOP (DB) 20 Ultra Librarian
SOP (NS) 20 Ultra Librarian
PDIP (N) 20 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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