| PIN |
FUNCTION |
| D0D7 |
Data Inputs |
| LE |
Latch Enable Input |
| OE |
3−State Output Enable Input |
| Q0Q7 |
3−State Latch Outputs |
The MC74AC573/74ACT574 contains eight D−type latches with 3−state output buffers. When the Latch Enable (LE) input is HIGH, data on the Dn 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 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 enabled. When OE is HIGH the buffers are in the high impedance mode but this does not interfere with entering new data into the latches.
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• Inputs and Outputs on Opposite Sides of Package Allowing Easy Interface with Microprocessors• Useful as Input or Output Port for Microprocessors• Functionally Identical to MC74AC373/74ACT373• 3−State Outputs for Bus Interfacing• Outputs Source/Sink 24 mA• ACT573 Has TTL Compatible Inputs• Pb−Free Packages are Available*
|
| Symbol |
Parameter |
Value |
Unit |
| VCC |
DC Supply Voltage (Referenced to GND) |
0.5 to +7.0 |
v |
| VIN |
DC Input Voltage (Referenced to GND) |
0.5 to VCC +0.5 |
v |
| VOUT |
DC Output Voltage (Referenced to GND) |
0.5 to VCC +0.5 |
v |
| IIN |
DC Input Current, per Pin |
±20 |
mA |
| IOUT |
DC Output Sink/Source Current, per Pin |
±50 |
mA |
| ICC |
DC VCC or GND Current per Output Pin |
±50 |
mA |
| Tstg |
Storage Temperature |
65 to +150 |
°C |
Post a Buying Lead
Required Field 
