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Details, datasheet, quote on part number:SN74ALS876ADWR
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Datasheet text preview:
SN54ALS874B, SN74ALS874B, SN74ALS876A SN74AS874, SN74AS876 DUAL 4-BIT D-TYPE EDGE-TRIGGERED FLIP-FLOPS
SDAS061C APRIL 1982 REVISED JANUARY 1995
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3-State Buffer-Type Outputs Drive Bus Lines Directly Bus-Structured Pinout Choice of True or Inverting Logic SN54ALS874B, SN74ALS874B, SN74AS874 Have True Outputs SN74ALS876A, SN74AS876 Have Inverting Outputs Asynchronous Clear Package Options Include Plastic Small-Outline (DW) Packages, Plastic (FN) and Ceramic (FK) Chip Carriers, and Standard Plastic (NT) and Ceramic (JT) 300-mil DIPs
SN54ALS874B . . . JT PACKAGE SN74ALS874B, SN74AS874 . . . DW OR NT PACKAGE (TOP VIEW)
1CLR 1OE 1D1 1D2 1D3 1D4 2D1 2D2 2D3 2D4 2OE GND
1 2 3 4 5 6 7 8 9 10 11 12
24 23 22 21 20 19 18 17 16 15 14 13
VCC 1CLK 1Q1 1Q2 1Q3 1Q4 2Q1 2Q2 2Q3 2Q4 2CLK 2CLR
description
These dual 4-bit D-type edge-triggered flip-flops feature 3-state outputs designed specifically as bus drivers. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. The edge-triggered flip-flops enter data on the low-to-high transition of the clock (CLK) input. The SN54ALS874B, SN74ALS874B, and SN74AS874 have clear (CLR) inputs and noninverting Q outputs. The SN74ALS876A and SN74AS876 have preset (PRE) inputs and inverting Q outputs; taking PRE low causes the four Q or Q outputs to go low independently of the clock. The SN54ALS874B is characterized for operation over the full military temperature range of 55°C to 125°C. The SN74ALS874B, SN74ALS876A, SN74AS874, and SN74AS876 devices are characterized for operation from 0°C to 70°C.
SN54ALS874B . . . FK PACKAGE (TOP VIEW)
1D2 1D3 1D4 NC 2D1 2D2 2D3
5 6 7 8 9
4
1D1 1OE 1CLR NC VCC 1CLK 1Q1
3 2 1 28 27 26 25 24 23 22 21 20 10 19 11 12 13 14 15 16 17 18
1Q2 1Q3 1Q4 NC 2Q1 2Q2 2Q3
NC No internal connection SN74ALS876A, SN74AS876 . . . DW OR NT PACKAGE (TOP VIEW)
1PRE 1OE 1D1 1D2 1D3 1D4 2D1 2D2 2D3 2D4 2OE GND
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.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
2D4 2OE GND NC 2CLR 2CLK 2Q4
1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13
VCC 1CLK 1Q1 1Q2 1Q3 1Q4 2Q1 2Q2 2Q3 2Q4 2CLK 2PRE
Copyright © 1995, Texas Instruments Incorporated
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SN54ALS874B, SN74ALS874B, SN74ALS876A SN74AS874, SN74AS876 DUAL 4-BIT D-TYPE EDGE-TRIGGERED FLIP-FLOPS
SDAS061C APRIL 1982 REVISED JANUARY 1995
Function Tables
SN54ALS874B, SN74ALS874B, SN74AS874 (each flip-flop) INPUTS OE L L L L H CLR L H H H X CLK X L X D X H L X X OUTPUT Q L H L Q0 Z
SN74ALS876A, SN74AS876 (each flip-flop) INPUTS OE L L L L H PRE L H H H X CLK X L X D X H L X X OUTPUT Q L L H Q0 Z
logic symbols
SN54ALS874B, SN74ALS874B, SN74AS874 1OE 1CLK 1CLR 1D1 1D2 1D3 1D4 2 23 1 3 4 5 6 R 1D 22 21 20 19 1Q1 1Q2 1Q3 1Q4 EN C1 1OE 1CLK 1PRE 1D1 1D2 1D3 1D4 2 23 1 3 4 5 6 S 1D 22 21 20 19 1Q1 1Q2 1Q3 1Q4 SN74ALS876A, SN74AS876 EN C1
2OE 2CLK 2CLR 2D1 2D2 2D3 2D4
11 14 13 7 8 9 10
EN C1 R 1D 18 17 16 15 2Q1 2Q2 2Q3 2Q4
2OE 2CLK 2PRE 2D1 2D2 2D3 2D4
11 14 13 7 8 9 10
EN C1 S 1D 18 17 16 15 2Q2 2Q3 2Q4 2Q1
These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the DW, JT, and NT packages.
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POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SN54ALS874B, SN74ALS874B, SN74ALS876A SN74AS874, SN74AS876 DUAL 4-BIT D-TYPE EDGE-TRIGGERED FLIP-FLOPS
SDAS061C APRIL 1982 REVISED JANUARY 1995
logic diagrams (positive logic)
SN54ALS874B, SN74ALS874B, SN74AS874 (each quad flip-flop) OE OE SN74ALS876A, SN74AS876 (each quad flip-flop)
CLK
CLK
CLR R C1 D1 1D R C1 D2 1D R C1 D3 1D Q3 Q2 Q1
PRE S C1 D1 1D S C1 D2 1D S C1 D3 1D Q3 Q2 Q1
R C1 D4 1D Q4 D4
S C1 1D Q4
Pin numbers shown are for the DW, JT, 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: SN54ALS874B . . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C to 125°C SN74ALS874B, SN74ALS876A . . . . . . . . . . . . . . . . . 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.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
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