Details, datasheet, quote on part number: SN54ALS174J
CategorySemiconductors => Space & High Reliability => Logic Products => Flip-Flop/Latch/Registers
Part familySN54ALS174 Hex D-type Flip-Flops With Clear
TitleD-Type Flip-Flops
DescriptionHex D-type Flip-Flops With Clear 16-CDIP -55 to 125
CompanyTexas Instruments, Inc.
DatasheetDownload SN54ALS174J datasheet
Cross ref.Similar parts: DM74ALS174N
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3-State OutputNo
Output TypeTTL
Technology FamilyALS
Package GroupCDIP,CFP,LCCC
Operating Temperature Range(C)-55 to 125
Input TypeTTL
Output Drive (IOL/IOH)(Max)(mA)8/-0.4
F @ Nom Voltage(Max)(Mhz)75
ICC @ Nom Voltage(Max)(mA)19
tpd @ Nom Voltage(Max)(ns)17
  Mecanical Data
Pin nbPackage typeInd stdJEDEC codePackage qtyCarrierDevice markWidth (mm)Length (mm)Thick (mm)Pitch (mm)
16JCDIPR-GDIP-T1TUBESN54ALS174J 6.9219.564.572.54
Application notes
• Advanced Schottky (ALS and AS) Logic Families
This document introduces the advanced Schottky family of clamped TTL integrated circuits (ICs). Detailed electrical characteristics of the 'AS and 'ALS devices with table formats are provided. Guidelines for designing high-performance digital systems using | Doc


Features, Applications

'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.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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.

PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

TA PACKAGE ORDERABLE PART NUMBER SN74ALS174N PDIP N Tube SN74ALS175N SN74AS175BN Tube Tape and reel Tube to 70C SOIC D Tape and reel Tube Tape and reel Tube Tape and reel SN74AS175BDR SN74ALS174NSR SOP NS Tape and reel SN74AS175BNSR SNJ54ALS174J CDIP J Tube to 125C CFP W Tube SNJ54AS174FK SNJ54ALS175FK TOP-SIDE MARKING SNJ54ALS174FK SNJ54AS174FK

SNJ54ALS175FK Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at This orderable is not recommended for new designs. FUNCTION TABLE (each flip-flop) INPUTS CLR CLK OUTPUTS H Q0

To Five Other Channels Pin numbers shown are for the J, N, NS, and W packages.

absolute maximum ratings over operating free-air temperature range, SN54/74ALS174, SN54/74ALS175 (unless otherwise noted)

Supply voltage, VCC. 7 V Input voltage, VI. 7 V Package thermal impedance, JA (see Note 1): D package. 73C/W N package. 67C/W NS package. 64C/W Storage temperature range, Tstg. to 150C

Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: The package thermal impedance is calculated in accordance with JESD 51-7.

SN54ALS174 SN54ALS175 MIN VCC VIH VIL IOH IOL TA Supply voltage High-level input voltage Low-level input voltage High-level output current Low-level output current Operating free-air temperature NOM 5 MAX SN74ALS174 SN74ALS175 MIN NOM 5 MAX mA C UNIT

NOTE 2: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004.


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