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SN74HC244 Dataheets PDF



Part Number SN74HC244
Manufacturers Texas Instruments
Logo Texas Instruments
Description Octal Buffers and Line Drivers
Datasheet SN74HC244 DatasheetSN74HC244 Datasheet (PDF)

SN54HC244, SN74HC244 SCLS130F – DECEMBER 1982 – REVISED MAY 2022 SNx4HC244 Octal Buffers and Line Drivers With 3-State Outputs 1 Features • Wide Operating Voltage Range of 2 V to 6 V • High-Current Outputs Drive Up to 15 LSTTL Loads • 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers • Low Power Consumption: ICC, 80-µA (Maximum) • Typical tpd = 11 ns • ±6-mA Output Drive at 5 V • Low Input Current of 1 µA (Maximum) • On Products Compliant to MIL-PRF-38535, All Parameters Are Te.

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SN54HC244, SN74HC244 SCLS130F – DECEMBER 1982 – REVISED MAY 2022 SNx4HC244 Octal Buffers and Line Drivers With 3-State Outputs 1 Features • Wide Operating Voltage Range of 2 V to 6 V • High-Current Outputs Drive Up to 15 LSTTL Loads • 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers • Low Power Consumption: ICC, 80-µA (Maximum) • Typical tpd = 11 ns • ±6-mA Output Drive at 5 V • Low Input Current of 1 µA (Maximum) • On Products Compliant to MIL-PRF-38535, All Parameters Are Tested Unless Otherwise Noted. On All Other Products, Production Processing Does Not Necessarily Include Testing of All Parameters. 2 Applications • Servers • LED Displays • Network Switches • Telecom Infrastructure • Motor Drivers • I/O Expanders 1OE 1 3 Description The SNx4HC244 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 SNx4HC244 devices are organized as two 4bit buffers and drivers with separate output-enable (OE) inputs. When OE is low, the device passes noninverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the highimpedance state. Device Information PART NUMBER PACKAGE (PINS)(1) BODY SIZE (NOM) CDIP (20) 6.92 mm × 24.38 mm SN54HC244 CFP (20) 6.92 mm × 13.72 mm LCCC (20) 8.89 mm × 8.89 mm SN74HC244DB SSOP (20) 5.30 mm × 7.25 mm SN74HC244DW SOIC (20) 7.50 mm × 12.80 mm SN74HC244N PDIP (20) 6.30 mm × 25.40 mm SN74HC244NS SOP (20) 5.30 mm × 12.60 mm SN74HC244PW TSSOP (20) 4.40 mm × 6.50 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. 2OE 19 2 1A1 18 1Y1 11 2A1 9 1Y1 4 1A2 16 1Y1 13 2A2 7 1Y1 6 1A3 14 1Y1 15 2A3 5 1Y1 8 1A4 12 1Y4 17 2A4 3 1Y4 Copyright © 2016, Texas Instruments Incorporated Logic Diagram (Positive Logic) An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. SN54HC244, SN74HC244 SCLS130F – DECEMBER 1982 – REVISED MAY 2022 www.ti.com Table of Contents 1 Features............................................................................1 2 Applications..................................................................... 1 3 Description.......................................................................1 4 Revision History.............................................................. 2 5 Pin Configuration and Functions...................................3 Pin Functions.................................................................... 3 6 Specifications.................................................................. 4 6.1 Absolute Maximum Ratings........................................ 4 6.2 ESD Ratings............................................................... 4 6.3 Recommended Operating Conditions.........................4 6.4 Thermal Information....................................................5 6.5 Electrical Characteristics.............................................5 6.6 Electrical Characteristics – SN54HC244.................... 5 6.7 Electrical Characteristics – SN74HC244.................... 6 6.8 Switching Characteristics............................................6 6.9 Switching Characteristics – CL = 50 pF...................... 8 6.10 Switching Characteristics – CL = 150 pF.................. 8 6.11 Typical Characteristic................................................ 9 7 Parameter Measurement Information.......................... 10 8 Detailed Description......................................................12 8.1 Overview................................................................... 12 8.2 Functional Block Diagram......................................... 12 8.3 Feature Description...................................................12 8.4 Device Functional Modes..........................................12 9 Application and Implementation.................................. 13 9.1 Application Information............................................. 13 9.2 Typical Application.................................................... 13 10 Power Supply Recommendations..............................14 11 Layout........................................................................... 14 11.1 Layout Guidelines................................................... 14 11.2 Layout Example...................................................... 14 12 Device and Documentation Support..........................15 12.1 Documentation Support.......................................... 15 12.2 Receiving Notification of Documentation Updates..15 12.3 Support Resources................................................. 15 12.4 Trademarks............................................................. 15 12.5 Electrostatic Disc.


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