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Details, datasheet, quote on part number:SN74AS576
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Datasheet text preview:
SN54ALS576B, SN54AS576 SN74ALS576B, SN74ALS577A, SN74AS576 OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS
SDAS065B DECEMBER 1982 REVISED JANUARY 1995
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3-State Buffer-Type Inverting Outputs Drive Bus Lines Directly Bus-Structured Pinout Buffered Control Inputs SN74ALS577A Has Synchronous Clear Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), Standard Plastic (N, NT) and Ceramic (J) 300-mil DIPs, and Ceramic Flat (W) Packages
SN54ALS576B, SN54AS576 . . . J OR W PACKAGE SN74ALS576B, SN74AS576 . . . DW OR N PACKAGE (TOP VIEW)
description
These octal D-type edge-triggered flip-flops feature 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. These 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 disabled. The SN54ALS576B and SN54AS576 are characterized for operation over the full military temperature range of 55°C to 125°C. The SN74ALS576B, SN74ALS577A, and SN74AS576 are characterized for operation from 0°C to 70°C.
OE 1D 2D 3D 4D 5D 6D 7D 8D GND
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
VC C 1Q 2Q 3Q 4Q 5Q 6Q 7Q 8Q CLK
SN54ALS576B, SN54AS576 . . . FK PACKAGE (TOP VIEW)
2D 1D OE VCC
3D 4D 5D 6D 7D
4 5 6 7 8
3 2 1 20 19 18 17 16 15 14 9 10 11 12 13
1Q 2Q 3Q 4Q 5Q 6Q VCC NC 1Q 2Q 3Q 4Q 5Q 6Q 7Q 8Q CLK NC
SN74ALS577A . . . DW OR NT PACKAGE (TOP VIEW)
CLR OE 1D 2D 3D 4D 5D 6D 7D 8D NC GND
NC No internal connection
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.
Copyright © 1995, Texas Instruments Incorporated
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
8D GND CLK 8Q 7Q
1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13
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SN54ALS576B, SN54AS576 SN74ALS576B, SN74ALS577A, SN74AS576 OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS
SDAS065B DECEMBER 1982 REVISED JANUARY 1995
Function Tables
ALS576B, AS576 (each flip-flop) INPUTS OE L L L H CLK L X D H L X X OUTPUT Q L H Q0 Z
SN74ALS577A (each flip-flop) INPUTS OE L L L L H CLR L H H H X CLK L X D X H L X X OUTPUT Q H L H Q0 Z
logic symbols
ALS576B, AS576 OE CLK 1D 2D 3D 4D 5D 6D 7D 8D 1 11 2 3 4 5 6 7 8 9 EN C1 1D 19 18 17 16 15 14 13 12 1Q 2Q 3Q 4Q 5Q 6Q 7Q 8Q OE CLK CLR 1D 2D 3D 4D 5D 6D 7D 8D 2 14 1 3 4 5 6 7 8 9 10 SN74ALS577A EN C1 1R 1D 22 21 20 19 18 17 16 15 1Q 2Q 3Q 4Q 5Q 6Q 7Q 8Q
These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown for the ALS576B and AS576 are for the DW, J, N, and W packages.
Pin numbers shown for the SN74ALS577A are for the DW and NT packages.
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POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SN54ALS576B, SN54AS576 SN74ALS576B, SN74ALS577A, SN74AS576 OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS
SDAS065B DECEMBER 1982 REVISED JANUARY 1995
logic diagrams (positive logic)
ALS576B, AS576 OE CLK 1 11 OE CLK C1 1D 2 1D C1 1D 3 1D 22 1Q CLR 1Q 2 14 1 SN74ALS577A
19
To Seven Other Channels To Seven Other Channels Pin numbers shown are for the DW, J, N, and W packages. Pin numbers shown are for the DW and NT packages.
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: SN54ALS576B . . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C to 125°C SN74ALS576B, SN74ALS577A . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C 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.
recommended operating conditions
SN54ALS576B 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 frequency Pulse duration duration Setup time before CLK time before CLK Hold time after CLK time after CLK Operating free-air temperature ALS576B SN74ALS577A ALS576B, CLK high or low SN74ALS577A, CLK high or low Data SN74ALS577A CLR Data SN74ALS577A CLR 55 125 4 15 25 0 4.5 2 0.7 1 12 22 0 0 16.5 16.5 15 15 0 0 0 70 NOM 5 MAX 5.5 SN74ALS576B SN74ALS577A MIN 4.5 2 0.8 2.6 24 30 30 NOM 5 MAX 5.5 V V V mA mA MHz ns ns ns °C UNIT
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
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