SN74AS874 Datasheet | Texas Instruments

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. SN54ALS874B . . . FK PACKAGE (TOP VIEW) 1D1 1OE 1CLR NC VCC 1CLK 1Q1 4 3 2 1 28 27 26 1D2 5 25 1Q2 1D3 6 24 1Q3 1D4 7 23 1Q4 NC 8 22 NC 2D1 9 21 2Q1 2D2 10 20 2Q2 2D3 11 19 2Q3 12 13 14 15 16 17 18 2D4 2OE GND NC 2CLR 2CLK 2Q4 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. - No internal connection SN74ALS876A, SN74AS876 . . . DW OR NT PACKAGE (TOP VIEW) 1PRE 1 1OE 2 1D1 3 1D2 4 1D3 5 1D4 6 2D1 7 2D2 8 2D3 9 2D4 10 2OE 11 GND 12 24 VCC 23 1CLK 22 1Q1 21 1Q2 20 1Q3 19 1Q4 18 2Q1 17 2Q2 16 2Q3 15 2Q4 14 2CLK 13 2PRE 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 - POST OFFICE BOX 1443 HOUSTON, TEXAS 77251- 1443 SN54ALS874B, SN74ALS874B, SN74ALS876A SN74AS874, SN74AS876 DUAL 4ĆBIT DĆTYPE EDGEĆTRIGGERED FLIPĆFLOPS SDAS061C - APRIL...