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MC74AC563

Motorola
Part Number MC74AC563
Manufacturer Motorola
Description OCTAL D-TYPE LATCH
Published Oct 14, 2006
Detailed Description www.DataSheet4U.com MC74AC563 MC74ACT563 Octal DĆType Latch with 3ĆState Outputs The MC74AC563/74ACT563 is a high-speed...
Datasheet PDF File MC74AC563 PDF File

MC74AC563
MC74AC563


Overview
www.
DataSheet4U.
com MC74AC563 MC74ACT563 Octal DĆType Latch with 3ĆState Outputs The MC74AC563/74ACT563 is a high-speed octal latch with buffered common Latch Enable (LE) and buffered common Output Enable (OE) inputs.
The MC74AC563/74ACT563 device is functionally identical to the MC74AC573/ 74ACT573, but with inverted outputs.
• Inputs and Outputs on Opposite Sides of Package Allowing Easy Interface with Microprocessors • Useful as Input or Output Port for Microprocessors • Functionally Identical to MC74AC573/74ACT573 but with Inverted Outputs • Outputs Source/Sink 24 mA • ′ACT563 Has TTL Compatible Inputs VCC 20 O0 19 O1 18 O2 17 O3 16 O4 15 O5 14 O6 13 O7 12 LE 11 OCTAL D-TYPE LATCH WITH 3-STATE OUTPUTS N SUFFIX CASE 738-03 PLASTIC DW SUFFIX CASE 751D-04 PLASTIC 1 OE 2 D0 3 D1 4 D2 5 D3 6 D4 7 D5 8 D6 9 D7 10 GND LOGIC SYMBOL PIN NAMES D0–D7 LE OE O0–O7 Data Inputs Latch Enable Input 3-State Output Enable Input 3-State Latch Outputs D0 D1 D2 D3 D4 D5 D6 D7 LE OE O0 O1 O2 O3 O4 O5 O6 O7 FACT DATA DataSheet 4 U .
com 5-1 www.
DataSheet4U.
com MC74AC563 MC74ACT563 FUNCTIONAL DESCRIPTION The MC74AC563/74ACT563 contains eight D-type latches with 3-state complementary outputs.
When the Latch Enable (LE) input is HIGH, data on the D n inputs enters the latches.
In this condition the latches are transparent, i.
e.
, a latch output will change state each time its D input changes.
When LE is LOW the latches store the information that was present on the D inputs a setup time preceding the HIGH-to-LOW transition of LE.
The 3-state buffers are controlled by the Output Enable (OE) input.
When OE is LOW, the buffers are in the bi-state mode.
When OE is HIGH the buffers are in the high impedance mode but that does not interfere with entering new data into the latches.
FUNCTION TABLE Inputs OE H H H H L L L LE X H H L H H L D X L H X L H X Internal Q X H L NC H L NC Outputs Function O Z Z Z Z H L NC High Z High Z High Z Latched Transparent Transparent Latched H = HIGH Volta...


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