Details, datasheet, quote on part number: SN54ALS564BJ
CategoryLogic => Flip-Flops => D-Type (3-State) Flip-Flops
TitleD-Type (3-State) Flip-Flops
Descriptionti SN54ALS564B, Octal D-type Edge Triggered Flip-flops With 3-state Outputs
CompanyTexas Instruments, Inc.
DatasheetDownload SN54ALS564BJ datasheet
Cross ref.Similar parts: DM74ALS564A
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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 125°C. The SN74ALS564B is characterized for operation from to 70°C.


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 70°C Storage temperature range. to 150°C

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 = 25°C. 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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