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MC74ACT574MG bảng dữ liệu(PDF) 2 Page - ON Semiconductor |
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2 / 10 page MC74AC574, MC74ACT574 http://onsemi.com 2 FUNCTIONAL DESCRIPTION The MC74AC574/74ACT574 consists of eight edge- triggered flip−flops with individual D−type inputs and 3−state true outputs. The buffered clock and buffered Output Enable are common to all flip−flops. The eight flip−flops will store the state of their individual D inputs that meet the setup and hold time requirements on the LOW−to−HIGH Clock (CP) transition. With the Output Enable (OE) LOW, the contents of the eight flip−flops are available at the outputs. When OE is HIGH, the outputs go to the high impedance state. Operation of the OE input does not affect the state of the flip−flops. FUNCTION TABLE Inputs Internal Outputs Function OE CP D Q On H H L NC Z Hold H HH NC Z Hold H LL Z Load H HH Z Load L LL L Data Available L HH H Data Available L HL NC NC No Change in Data L H H NC NC No Change in Data H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance = LOW-to-HIGH Clock Transition NC = No Change Figure 3. Logic Diagram D0 D1 D2 D3 D4 D5 D6 D7 CD Q O0 O1 O2 O3 O4 O5 O6 O7 OE CP CD Q CD Q CD Q CD Q CD Q CD Q CD Q NOTE: This diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. MAXIMUM RATINGS 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 Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. |
Số phần tương tự - MC74ACT574MG |
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Mô tả tương tự - MC74ACT574MG |
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