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D-type flip-flops

SN54ALS174

ACTIVE

Hex D-type Flip-Flops With Clear

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Data sheet

SN54ALS174

ACTIVE
Data sheet Order now

Product details

Number of channels 6 Technology family ALS Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 5.5 Input type Bipolar Output type Push-Pull Clock frequency (max) (MHz) 75 IOL (max) (mA) 8 IOH (max) (mA) -0.4 Supply current (max) (µA) 19000 Features High speed (tpd 10-50ns) Operating temperature range (°C) -55 to 125 Rating Military
Number of channels 6 Technology family ALS Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 5.5 Input type Bipolar Output type Push-Pull Clock frequency (max) (MHz) 75 IOL (max) (mA) 8 IOH (max) (mA) -0.4 Supply current (max) (µA) 19000 Features High speed (tpd 10-50ns) Operating temperature range (°C) -55 to 125 Rating Military
CDIP (J) 16 135.3552 mm² 19.56 x 6.92 CFP (W) 16 69.319 mm² 10.3 x 6.73 LCCC (FK) 20 79.0321 mm² 8.89 x 8.89
  • ’ALS174 and ’AS174 Contain Six Flip-Flops With Single-Rail Outputs
  • ’ALS175 and ’AS175B Contain Four Flip-Flops With Double-Rail Outputs
  • Buffered Clock and Direct-Clear Inputs
  • Applications Include:
    • Buffer/Storage Registers
    • Shift Registers
    • Pattern Generators
  • Fully Buffered Outputs for Maximum Isolation From External Disturbances (’AS Only)
  • ’ALS174 and ’AS174 Contain Six Flip-Flops With Single-Rail Outputs
  • ’ALS175 and ’AS175B Contain Four Flip-Flops With Double-Rail Outputs
  • Buffered Clock and Direct-Clear Inputs
  • Applications Include:
    • Buffer/Storage Registers
    • Shift Registers
    • Pattern Generators
  • Fully Buffered Outputs for Maximum Isolation From External Disturbances (’AS Only)

These positive-edge-triggered flip-flops utilize TTL circuitry to implement D-type flip-flop logic. All have a direct-clear (CLR)\ input. The ’ALS175 and ’AS175B feature complementary outputs from each flip-flop.

Information at the data (D) inputs meeting the setup-time requirements is transferred to the outputs on the positive-going edge of the clock pulse. Clock triggering occurs at a particular voltage level and is not directly related to the transition time of the positive-going pulse. When the clock (CLK) input is at either the high or low level, the D-input signal has no effect at the output.

These circuits are fully compatible for use with most TTL circuits.

These positive-edge-triggered flip-flops utilize TTL circuitry to implement D-type flip-flop logic. All have a direct-clear (CLR)\ input. The ’ALS175 and ’AS175B feature complementary outputs from each flip-flop.

Information at the data (D) inputs meeting the setup-time requirements is transferred to the outputs on the positive-going edge of the clock pulse. Clock triggering occurs at a particular voltage level and is not directly related to the transition time of the positive-going pulse. When the clock (CLK) input is at either the high or low level, the D-input signal has no effect at the output.

These circuits are fully compatible for use with most TTL circuits.
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Technical documentation

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Type Title Date
* Data sheet Hex/Quadruple D-Type Flip-Flops With Clear datasheet (Rev. E) 23 May 2002
* SMD SN54ALS174 SMD 83019012A 21 Jun 2016
Application note Power-Up Behavior of Clocked Devices (Rev. B) PDF | HTML 15 Dec 2022
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
Application note TI IBIS File Creation, Validation, and Distribution Processes 29 Aug 2002
Application note Bus-Interface Devices With Output-Damping Resistors Or Reduced-Drive Outputs (Rev. A) 01 Aug 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 Advanced Schottky (ALS and AS) Logic Families 01 Aug 1995

Design & development

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Package Pins CAD symbols, footprints & 3D models
CDIP (J) 16 Ultra Librarian
CFP (W) 16 Ultra Librarian
LCCC (FK) 20 Ultra Librarian
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