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SN54ABT843

Texas Instruments
Part Number SN54ABT843
Manufacturer Texas Instruments
Description 9-BIT BUS-INTERFACE D-TYPE LATCHES
Published May 20, 2023
Detailed Description SN54ABT843, SN74ABT843 9-BIT BUS-INTERFACE D-TYPE LATCHES WITH 3-STATE OUTPUTS SCBS197D – FEBRUARY 1991 – REVISED MAY 19...
Datasheet PDF File SN54ABT843 PDF File

SN54ABT843
SN54ABT843

Overview
SN54ABT843, SN74ABT843 9-BIT BUS-INTERFACE D-TYPE LATCHES WITH 3-STATE OUTPUTS SCBS197D – FEBRUARY 1991 – REVISED MAY 1997 D State-of-the-Art EPIC-ΙΙB™ BiCMOS Design Significantly Reduces Power Dissipation D Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD-17 D Typical VOLP (Output Ground Bounce) < 1 V at VCC = 5 V, TA = 25°C D High-Drive Outputs (–32-mA IOH, 64-mA IOL) D Package Options Include Plastic Small-Outline (DW) and Shrink Small-Outline (DB) Packages, Ceramic Chip Carriers (FK), Ceramic Flat (W) Package, and Plastic (NT) and Ceramic (JT) DIPs description The ’ABT843 9-bit latches are designed specifically for driving highly capacitive or relatively low-impedance loads.
They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
2D 1D OE NC SN54ABT843 .
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JT OR W PACKAGE SN74ABT843 .
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DB, DW, OR NT PACKAGE (TOP VIEW) OE 1 1D 2 2D 3 3D 4 4D 5 5D 6 6D 7 7D 8 8D 9 9D 10 CLR 11 GND 12 24 VCC 23 1Q 22 2Q 21 3Q 20 4Q 19 5Q 18 6Q 17 7Q 16 8Q 15 9Q 14 PRE 13 LE SN54ABT843 .
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FK PACKAGE (TOP VIEW) VCC 1Q 2Q The nine transparent D-type latches provide true data at the outputs.
A buffered output-enable (OE) input can be used to place the nine outputs in either a normal logic state (high or low logic levels) or a high-impedance state.
The outputs are also in the high-impedance state during power-up and power-down conditions.
The outputs remain in the high-impedance state while the device is powered down.
In the high-impedance state, the outputs neither load nor drive the bus lines significantly.
The high-impedance state and increased drive provide the capability to drive bus lines without need for interface or pullup components.
4 3 2 1 28 27 26 3D 5 25 3Q 4D 6 24 4Q 5D 7 23 5Q NC 8 22 NC 6D 9 21 6Q 7D 10 20 7Q 8D 11 19 8Q 12 13 14 15 16 17 18 9Q PRE LE NC GND CLR 9D NC – No internal connection OE does not affect the internal operations of the lat...


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