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The AC/ACT74 is a dual D-type flip-flop with Asynchronous Clear and Set inputs and complementary (Q,Q) outputs. Information at the input is transferred to the outputs on the positive edge of the clock pulse. Clock triggering occurs at a voltage level of the clock pulse and is not directly related to the transition time of the positive-going pulse. After the Clock Pulse input threshold voltage has been passed, the Data input is locked out and information present will not be transferred to the outputs until the next rising edge of the Clock Pulse input.
Asynchronous Inputs:
LOW input to SD (Set) sets Q to HIGH level
LOW input to CD (Clear) sets Q to LOW level
Clear and Set are independent of clock
Simultaneous LOW on CD and SD makes both Q and Q HIGH
74ACT74PC Maximum Ratings
Supply Voltage (VCC).................. −0.5V to +7.0V DC Input Diode Current (IIK) VI = −0.5V ......................................... −20 mA VI = VCC + 0.5V................................. +20 mA DC Input Voltage (VI) .........−0.5V to VCC + 0.5V DC Output Diode Current (IOK) VO = −0.5V........................................ −20 mA VO = VCC + 0.5V +20 mA DC Output Voltage (VO) ......−0.5V to VCC + 0.5V DC Output Source or Sink Current (IO)............................ ±50 mA DC VCC or Ground Current per Output Pin (ICC or IGND)............... ±50 mA Storage Temperature (TSTG)... −65°C to +150°C Junction Temperature (TJ) PDIP ......................................................140°C
74ACT74PC Features
ICC reduced by 50% Output source/sink 24 mA ACT74 has TTL-compatible inputs
74ACT74PC Connection Diagram
74ACT74SC Parameters
Technical/Catalog Information
74ACT74SC
Vendor
Fairchild Semiconductor
Category
Integrated Circuits (ICs)
Mounting Type
Surface Mount
Package / Case
14-SOIC
Function
Set and Reset
Number of Bits per Element
1
Number of Elements
2 - Dual
Current - Output High, Low
24mA, 24mA
Output Type
Differential
Trigger Type
Positive Edge
Type
D-Type
Packaging
Tube
Operating Temperature
-40°C ~ 85°C
Delay Time - Propagation
7.5ns
Frequency - Clock
210MHz
Voltage - Supply
4.5 V ~ 5.5 V
Lead Free Status
Lead Free
RoHS Status
RoHS Compliant
Other Names
74ACT74SC 74ACT74SC
74ACT74SC General Description
The AC/ACT74 is a dual D-type flip-flop with Asynchronous Clear and Set inputs and complementary (Q, Q) outputs. Information at the input is transferred to the outputs on the positive edge of the clock pulse. Clock triggering occurs at a voltage level of the clock pulse and is not directly related to the transition time of the positive-going pulse. After the Clock Pulse input threshold voltage has been passed, the Data input is locked out and information present will not be transferred to the outputs until the next rising edge of the Clock Pulse input.
Asynchronous Inputs:
LOW input to SD (Set) sets Q to HIGH level
LOW input to CD (Clear) sets Q to LOW level
Clear and Set are independent of clock
Simultaneous LOW on CD and SD makes both Q and Q HIGH
74ACT74SC Maximum Ratings
Supply Voltage (VCC).................. −0.5V to +7.0V DC Input Diode Current (IIK) VI = −0.5V ......................................... −20 mA VI = VCC + 0.5V................................. +20 mA DC Input Voltage (VI) .........−0.5V to VCC + 0.5V DC Output Diode Current (IOK) VO = −0.5V........................................ −20 mA VO = VCC + 0.5V +20 mA DC Output Voltage (VO) ......−0.5V to VCC + 0.5V DC Output Source or Sink Current (IO)............................ ±50 mA DC VCC or Ground Current per Output Pin (ICC or IGND)............... ±50 mA Storage Temperature (TSTG)... −65°C to +150°C Junction Temperature (TJ) PDIP ......................................................140°C
74ACT74SC Features
ICC reduced by 50% Output source/sink 24 mA ACT74 has TTL-compatible inputs