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HD74HCT573

Hitachi Semiconductor
Part Number HD74HCT573
Manufacturer Hitachi Semiconductor
Description Octal Transparent Latches (with 3-state outputs)
Published Mar 23, 2005
Detailed Description HD74HCT563/HD74HCT573 Octal Transparent Latches (with 3-state outputs) Description When the latch enable (LE) input is ...
Datasheet PDF File HD74HCT573 PDF File

HD74HCT573
HD74HCT573


Overview
HD74HCT563/HD74HCT573 Octal Transparent Latches (with 3-state outputs) Description When the latch enable (LE) input is high, the Q outputs of HD74HCT563 will follow the inversion of the D inputs and the Q outputs of HD74HCT573 will follow the D inputs.
When the latch enable goes low, data at the D inputs will be retained at the outputs until latch enabled returns high again.
When a high logic level is applied to the output control input, all outputs go to a high impedance state, regardless of what signals are present at the other inputs and the state of the storage elements.
Features • • • • • • LSTTL Output Logic Level Compatibility as well as CMOS Output Compatibility High Speed Operation: tpd (D to Q, Q) = 13 ns typ (CL = 50 pF) High Output Current: Fanout of 15 LSTTL Loads Wide Operating Voltage: VCC = 4.
5 to 5.
5 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Function Table Outputs Output Control L L L H Latch Enable H H L X Data H L X X HD74HCT563 L H Q0 Z HD74HCT573 H L Q0 Z HD74HCT563/HD74HCT573 Pin Arrangement HD74HCT563 Output Control 1 1D 2 2D 3 3D 4 4D 5 5D 6 6D 7 7D 8 8D 9 GND 10 OE D Q OE D Q OE D Q OE D Q OE D Q OE D Q OE D Q OE D Q 20 VCC 19 1Q 18 2Q 17 3Q 16 4Q 15 5Q 14 6Q 13 7Q 12 8Q Latch 11 Enable (Top view) 2 HD74HCT563/HD74HCT573 HD74HCT573 Output Control 1 1D 2 2D 3 3D 4 4D 5 5D 6 6D 7 7D 8 8D 9 GND 10 OE D Q OE D Q OE D Q OE D Q OE D Q OE D Q OE D Q OE D Q 20 VCC 19 1Q 18 2Q 17 3Q 16 4Q 15 5Q 14 6Q 13 7Q 12 8Q Latch 11 Enable (Top view) 3 HD74HCT563/HD74HCT573 Block Diagram HD74HCT563 1D 2D 3D D C Q C D C Q C D C Q C D C Q C D C Q C D C Q C D C Q C D C Q C 1Q 2Q 3Q 4Q 5Q 6Q 7Q 8Q 4D 5D 6D 7D 8D Enable C OC 4 HD74HCT563/HD74HCT573 HD74HCT573 1D 2D 3D D C Q C D C Q C D C Q C D C Q C D C Q C D C Q C D C Q C D C Q C 1Q 2Q 3Q 4Q 5Q 6Q 7Q 8Q 4D 5D 6D 7D 8D Enable C OC Absolute Maximum Ratings Item Supply voltage range Input voltage Output voltage DC current drain per pin DC curren...


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