SN74AC240-Q1

ACTIVE

Product details

Technology family AC Supply voltage (min) (V) 2 Supply voltage (max) (V) 6 Number of channels 8 IOL (max) (mA) 24 IOH (max) (mA) -24 Supply current (max) (µA) 40 Input type Standard CMOS Output type 3-State Features Balanced outputs, Input clamp diode, Very high speed (tpd 5-10ns) Rating Automotive Operating temperature range (°C) -40 to 125
Technology family AC Supply voltage (min) (V) 2 Supply voltage (max) (V) 6 Number of channels 8 IOL (max) (mA) 24 IOH (max) (mA) -24 Supply current (max) (µA) 40 Input type Standard CMOS Output type 3-State Features Balanced outputs, Input clamp diode, Very high speed (tpd 5-10ns) Rating Automotive Operating temperature range (°C) -40 to 125
TSSOP (PW) 20 41.6 mm² 6.5 x 6.4
  • Qualified for Automotive Applications
  • 2-V to 6-V VCC Operation
  • Inputs Accept Voltages to 6 V
  • Max tpd of 6.5 ns at 5 V

  • Qualified for Automotive Applications
  • 2-V to 6-V VCC Operation
  • Inputs Accept Voltages to 6 V
  • Max tpd of 6.5 ns at 5 V

This octal buffer and line driver is designed specifically to improve the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters.

The SN74AC240 device is organized as two 4-bit buffers/drivers with separate output-enable (OE) inputs. When OE is low, the device passes inverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.

To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

This octal buffer and line driver is designed specifically to improve the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters.

The SN74AC240 device is organized as two 4-bit buffers/drivers with separate output-enable (OE) inputs. When OE is low, the device passes inverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.

To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Pin-for-pin with same functionality to the compared device
SN74HCS240-Q1 ACTIVE Automotive octal buffers and line drivers with three-state outputs Longer average propagation delay (12ns), lower average drive strength (7.8mA)

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 14
Type Title Date
* Data sheet Octal Buffer/Driver With 3-State Outputs datasheet (Rev. A) 22 Jan 2008
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
More literature Automotive Logic Devices Brochure 27 Aug 2014
More literature HiRel Unitrode Power Management Brochure 07 Jul 2009
User guide LOGIC Pocket Data Book (Rev. B) 16 Jan 2007
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004
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 Input and Output Characteristics of Digital Integrated Circuits 01 Oct 1996
Application note Live Insertion 01 Oct 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
Simulation model

SN74AC240 Behavioral SPICE Model

SCAM135.ZIP (7 KB) - PSpice Model
Package Pins Download
TSSOP (PW) 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
Information included:
  • Fab location
  • Assembly location

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