Details, datasheet, quote on part number: SN54ALS653FK
PartSN54ALS653FK
CategoryLogic => Bus Transceivers
DescriptionOctal Bus Transceivers And Registers With 3-state Outputs
CompanyTexas Instruments, Inc.
DatasheetDownload SN54ALS653FK datasheet
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Features, Applications

Bus Transceivers/Registers Independent Registers and Enables for A and B Buses Multiplexed Real-Time and Stored Data Choice of True or Inverting Data Paths Choice 3-State or Open-Collector Outputs to A Bus Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (NT) and Ceramic (JT) 300-mil DIPs

DEVICE A OUTPUT 3 State B OUTPUT 3 State LOGIC Inverting
description

These devices consist of bus-transceiver circuits, A2 6 D-type flip-flops, and control circuitry arranged for B2 A3 multiplexed transmission of data directly from the 22 NC data bus or from the internal storage registers. A4 9 Output-enable (OEAB and OEBA) inputs are A5 10 provided to control the transceiver functions. A6 11 Select-control (SAB and SBA) inputs are provided to select real-time or stored data transfer. The circuitry used for select control eliminates the typical decoding glitch that occurs in a multiplexer during the transition between stored and real-time No internal connection data. A low input level selects real-time data, and a high input level selects stored data. Figure 1 illustrates the four fundamental bus-management functions that can be performed with the octal bus transceivers and registers. Data on the or B data bus, or both, can be stored in the internal D-type flip-flops by low-to-high transitions at the appropriate clock (CLKAB or CLKBA) terminals, regardless of the select- or output-control terminals. When SAB and SBA are in the real-time transfer mode, it is possible to store data without using the internal D-type flip-flops by simultaneously enabling OEAB and OEBA. In this configuration, each output reinforces its input. When all other data sources to the two sets of bus lines are at high impedance, each set of bus lines remains at its last state.

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.

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.

The -1 versions of the SN74ALS651A and SN74ALS652A are identical to the standard versions except that the recommended maximum IOL for the -1 versions is increased to 48 mA. There are no -1 versions of the SN54ALS653, SN74ALS653, and SN74ALS654. The SN54ALS' and SN54AS' families are characterized for operation over the full military temperature range to 125C. The SN74ALS' and SN74AS' families are characterized for operation from to 70C.

BUS B 22 SBA X REAL-TIME TRANSFER BUS A TO BUS B 1 CLKAB L 23 CLKBA L 2 SAB H BUS B 22 SBA H TRANSFER STORED DATA TO A AND/OR B


 

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