Dual D-type Positive-Edge-Triggered Flip-Flops With Preset And Clear

SN54LS74A-SP

ACTIVE

Product details

Number of channels (#) 2 Technology Family LS Supply voltage (Min) (V) 4.5 Supply voltage (Max) (V) 5.5 Input type Bipolar Output type Push-Pull Clock Frequency (Max) (MHz) 35 IOL (Max) (mA) 8 IOH (Max) (mA) -0.4 ICC (Max) (uA) 8000 Features High speed (tpd 10-50ns)
Number of channels (#) 2 Technology Family LS Supply voltage (Min) (V) 4.5 Supply voltage (Max) (V) 5.5 Input type Bipolar Output type Push-Pull Clock Frequency (Max) (MHz) 35 IOL (Max) (mA) 8 IOH (Max) (mA) -0.4 ICC (Max) (uA) 8000 Features High speed (tpd 10-50ns)
CDIP (J) 14 130 mm² 19.94 x 6.73 CFP (W) 14 55 mm² 9.2 x 6.39
  • Package Options Include Plastic “Small Outline" Packages, Ceramic Chip Carriers and Flat Packages, and Plastic and Ceramic DIPs
  • Dependable Texas Instruments Quality and Reliability

 

  • Package Options Include Plastic “Small Outline" Packages, Ceramic Chip Carriers and Flat Packages, and Plastic and Ceramic DIPs
  • Dependable Texas Instruments Quality and Reliability

 

These devices contain two independent D-type positive-edge-triggered flip-flops. A low level at the preset or clear inputs sets or resets the outputs regardless of the levels of the other inputs. When preset and clear are inactive (high), data at the D input meeting the setup time requirements are transferred to the outputs on the positive-going edge of the clock pulse. Clock triggering occurs at a voltage level and is not directly related to the rise time of the clock pulse. Following the hold time interval, data at the D input may be changed without affecting the levels at the outputs.

The SN54' family is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74' family is characterized for operation from 0°C to 70°C.

 

These devices contain two independent D-type positive-edge-triggered flip-flops. A low level at the preset or clear inputs sets or resets the outputs regardless of the levels of the other inputs. When preset and clear are inactive (high), data at the D input meeting the setup time requirements are transferred to the outputs on the positive-going edge of the clock pulse. Clock triggering occurs at a voltage level and is not directly related to the rise time of the clock pulse. Following the hold time interval, data at the D input may be changed without affecting the levels at the outputs.

The SN54' family is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74' family is characterized for operation from 0°C to 70°C.

 

Download

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 16
Type Title Date
* Data sheet Dual D-Type Positive-Edge -Triggered Flip-Flops With Preset And Clear datasheet 01 Mar 1988
Selection guide TI Space Products (Rev. H) 27 Jan 2021
Application note Heavy Ion Orbital Environment Single-Event Effects Estimations 18 May 2020
Application note Single-Event Effects Confidence Interval Calculations 14 Jan 2020
More literature TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing 17 Jun 2019
Selection guide Logic Guide (Rev. AB) 12 Jun 2017
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 02 Dec 2015
Application note Power-Up Behavior of Clocked Devices (Rev. A) 06 Feb 2015
User guide LOGIC Pocket Data Book (Rev. B) 16 Jan 2007
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004
More literature Logic Cross-Reference (Rev. A) 07 Oct 2003
Application note TI IBIS File Creation, Validation, and Distribution Processes 29 Aug 2002
Application note Designing With Logic (Rev. C) 01 Jun 1997
Application note Designing with the SN54/74LS123 (Rev. A) 01 Mar 1997
Application note Input and Output Characteristics of Digital Integrated Circuits 01 Oct 1996
Application note Live Insertion 01 Oct 1996

Design & development

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

Package Pins Download
CDIP (J) 14 View options
CFP (W) 14 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