74LS574 SYC | Alldatasheet

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Technical content

DM74LS574 Octal D-Type Flip-Flop with 3-STATE Outputs 74LS574 Octal D-Type Flip-Flop with 3-STATE Outputs General Description The DM74LS574 is a high speed low power octal flip-flop with a buffered common Clock (CP) and a buffered com- mon Output Enable (OE ). The information presented to the D inputs is stored in the flip-flops on the LOW-to-HIGH Clock (CP) transition. This device is functionally identical to the DM74LS374 except for the pinouts. Ordering Code: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Symbol VCC = Pin 20 GND = Pin 10 Connection Diagram Truth Table H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance /c17 = HIGH-to-LOW Clock (CP) transition Order Number Package Number Package Description DM74LS574WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide DM74LS574N N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Inputs Outputs Dn CP OE On H /c17 LH L /c17 LL XXHZ www.sycelectronica.com.ar

The DM74LS574 consists of eight edge-triggered flip-flops with individual D-type inputs and 3-STATE true outputs. The buffered clock and buffered Outputs Enable are com- mon to all flip-flops. The eight flip-flops will store the state of their individual D inputs that meet the setup and hold times requirements on the LOW-to-HIGH Clock (CP) tran- sition. With the Output Enable (OE ) LOW, the contents of the eight flip-flops are available at the outputs. When the 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. Logic Diagram www.sycelectronica.com.ar

Absolute Maximum Ratings(Note 1) Note 1: The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation. Recommended Operating Conditions

Electrical Characteristics

over recommended operating free air temperature range (unless otherwise noted) Note 2: All typicals are at VCC = 5V, TA = 25°C. Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second. Note 4: ICC is measured with the DATA inputs grounded and the OUTPUT CONTROLS at 4.5V. Supply Voltage 7V Input Voltage 7V Operating Free Air Temperature Range 0°C to +70°C Storage Temperature Range −65°C to +150°C Symbol Parameter Min Nom Max Units V CC Supply Voltage 4.75 5 5.25 V VIH HIGH Level Input Voltage 2 V VIL LOW Level Input Voltage 0.8 V IOH HIGH Level Output Current −2.6 mA IOL LOW Level Output Current 24 mA TA Free Air Operating Temperature 0 70 °C tS (H) Setup Time HIGH or LOW 20 nstS (L) Dn to CP 20 tH (H) Hold Time HIGH or LOW 0 nstH (L) Dn to CP 0 tW (H) CP Pulse Width 15 nstW (L) HIGH or LOW 15 Symbol Parameter Conditions Min Typ Max Units (Note 2) VI Input Clamp Voltage V CC = Min, II = −18 mA −1.5 V VOH HIGH Level V CC = Min, IOH = Max, 2.4 3.3 V Output Voltage V IL = Max, VIH = Min VOL LOW Level V CC = Min, IOL = Max, 0.35 0.5 Output Voltage V IL = Max, VIH = Min V IOL = 12 mA, VCC = Min 0.25 0.4 II Input Current @ Max Input Voltage VCC = Max, VI = 7V 0.1 mA IIH HIGH Level Input Current V CC = Max, VI = 2.7V 20 µA IIL LOW Level Input Current V CC = Max, VI = 0.4V −400 µA IOZH OFF-State Output Current with V CC = Max, VO = 2.4V 20 µA HIGH Level Output Voltage Applied VIH = Min, VIL = Max IOZL OFF-State Output Current with V CC = Max, VO = 0.4V −20 µA LOW Level Output Voltage Applied VIH = Min, VIL = Max IOS Short Circuit Output Current (Note 3) VCC = Max −30 −130 mA ICC Supply Current V CC = Max (Note 4) 45 mA www.sycelectronica.com.ar

VCC = +5.0V, TA = +25°C Symbol Parameter R L = 2 kΩ , CL = 45 pF Units Min Max fMAX Maximum Clock Frequency 35 MHz tPLH Propagation Delay 28 ns tPHL CP to On 28 tPZH Output Enable Time 28 ns tPZL 28 tPHZ Output Disable Time 20 ns tPLZ 25 www.sycelectronica.com.ar

Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide Package Number M20B www.sycelectronica.com.ar

DM74LS574 Octal D-Type Flip-Flop with 3-STATE Outputs Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N20A www.sycelectronica.com.ar