Details, datasheet, quote on part number: SN54ALS564B
CategorySemiconductors => Space & High Reliability => Logic Products => Flip-Flop/Latch/Registers
Part familySN54ALS564B Octal D-type Edge Triggered Flip-Flops with 3-state Outputs
TitleBipolar->ALS Family
DescriptionOctal D-type Edge Triggered Flip-Flops with 3-state Outputs 20-CDIP -55 to 125
CompanyTexas Instruments, Inc.
DatasheetDownload SN54ALS564B datasheet
Cross ref.Similar parts: SN74LS273BJ, SN74LS273BJB, SN74LS273BJT, SN74LS273BJTB, SN74LS273BN, SN74LS273BNB, SN74LS273BNT, SN74LS273BNTB, SN74LS273J, SN74LS273JB
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3-State OutputYes
Output TypeTTL
Technology FamilyALS
ICC @ Nom Voltage(Max)(mA)30
Output Drive (IOL/IOH)(Max)(mA)24/-2.6
Operating Temperature Range(C)-55 to 125
tpd @ Nom Voltage(Max)(ns)14
Input TypeTTL
Package GroupCDIP
F @ Nom Voltage(Max)(Mhz)75
  Mecanical Data
Pin nbPackage typeInd stdJEDEC codePackage qtyCarrierDevice markWidth (mm)Length (mm)Thick (mm)Pitch (mm)
20JCDIPR-GDIP-T1TUBESNJ54ALS564BJ 6.9224.24.572.54
Application notes
• Input and Output Characteristics of Digital Integrated Circuits
This report contains a comprehensive collection of the input and output characteristic curves of typical integrated circuits from various logic families. These curves go beyond the information given in data sheets by providing additional details regarding | Doc
• 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
• Power-Up Behavior of Clocked Devices (Rev. A) | Doc
• TI IBIS File Creation, Validation, and Distribution Processes
The Input/Output Buffer Information Specification (IBIS), also known as ANSI/EIA-656, has become widely accepted among electronic design automation (EDA) vendors, semiconductor vendors, and system designers as the format for digital electrical interface da | Doc
• Live Insertion
Many applications require the ability to exchange modules in electronic systems without removing the supply voltage from the module (live insertion). For example an electronic telephone exchange must always remain operational even during module maintenance | Doc
• Bus-Interface Devices With Output-Damping Resistors Or Reduced-Drive Outputs (Rev. A)
The spectrum of bus-interface devices with damping resistors or balanced/light output drive currently offered by various logic vendors is confusing at best. Inconsistencies in naming conventions and methods used for implementation make it difficult to iden | Doc
• Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) | Doc
• Semiconductor Packing Material Electrostatic Discharge (ESD) Protection
Forty-eight-pin TSSOP components that were packaged using Texas Instruments (TI) standard packing methodology were subjected to electrical discharges between 0.5 and 20 kV, as generated by an IEC ESD simulator to determine the level of ISD protection provi | Doc
• Designing With Logic (Rev. C)
Data sheets, which usually give information on device behavior only under recommended operating conditions, may only partially answer engineering questions that arise during the development of systems using logic devices. However, information is frequently | Doc
• Introduction to Logic | Doc


Features, Applications

3-State Buffer-Type Inverting Outputs Drive Bus Lines Directly Bus-Structured Pinout Buffered Control Inputs Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), Standard Plastic (N) and Ceramic (J) 300-mil DIPs, and Ceramic Flat (W) Packages


These octal D-type edge-triggered flip-flops feature inverting 3-state outputs designed specifically for bus driving. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. The eight flip-flops enter data on the low-to-high transition of the clock (CLK) input. The output-enable (OE) input does not affect internal operations of the flip-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state. The SN54ALS564B is characterized for operation over the full military temperature range to 125C. The SN74ALS564B is characterized for operation from to 70C.


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.

This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

Supply voltage, VCC. 7 V Input voltage, VI. 7 V Voltage applied to a disabled 3-state output. 5.5 V Operating free-air temperature range, TA: to 70C Storage temperature range. 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.

SN54ALS564B MIN VCC VIH VIL IOH IOL fclock tw tsu th TA Supply voltage High-level input voltage Low-level input voltage High-level output current Low-level output current Clock frequency Pulse duration, CLK high or low Setup time, data before CLK Hold time, data after CLK Operating free-air temperature NOM 5 MAX 5.5 SN74ALS564B MIN NOM 5 MAX 5.5 UNIT V mA MHz ns C

electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)

Outputs disabled All typical values are at VCC = 25C. The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.

VCC = 50 pF, TA = MIN to MAX SN54ALS564B MIN fmax tPLH tPHL tPZH tPZL tPHZ 22 CLK An Q Any An Q Any 4 OE MAX SN74ALS564B MIN MAX MHz ns

14 OE Any Q tPLZ 29 For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.


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