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Part: IN74ALS74AN
Category:
Logic
Description: IN74ALS74AD Dual D-type Flip-flop 14
Company: IK Semiconductor
Datasheet: Download IN74ALS74AN datasheet File size : 288 kB
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Datasheet text preview:
TECHNICAL DATA
IN74ALS74
Dual D Flip-Flop with Set and Reset
Each of the two independent positive edge-triggered flip-flops in this circuit has individual Data, Clock, Set and Reset inputs, and complementary Q and Q outputs. · Switching specifications at 50 pF · Switching specifications guaranteed over full temperature and VCC range · Functionally and pin-for-pin compatible with Schottky and LS TTL counterpart · Improved AC performance over LS74 at approximately half the power
ORDERING INFORMATION IN74ALS74N Plastic IN74ALS74D SOIC TA = -10° to 70° C for all packages
LOGIC DIAGRAM
PIN ASSIGNMENT
FUNCTION TABLE
Inputs Set L H L H H H H PIN 14 =VCC PIN 7 = GND Reset H L L H H H H L H Clock X X X Da t a X X X H L X X Outputs Q H L H
*
Q L H H* L H
H L
No Change No Change
H H X No Change *Both outputs will remain high as long as Set and Reset are low, but the output states are unpredictable if Set and Reset go high simultaneously. X = don't care
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IN74ALS74
MAXIMUM RATINGS*
Symbol VCC VIN V OUT Tstg
*
Parameter Supply Voltage Input Voltage Output Voltage Storage Temperature Range
Value 7.0 7 .0 5 .5 -65 to +150
Unit V V V °C
Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended Operating Conditions.
RECOMMENDED OPERATING CONDITIONS
Symbol VCC VIH VIL I OH I OL TA Supply Voltage High Level Input Voltage Low Level Input Voltage High Level Output Current Low Level Output Current Ambient Temperature Range -10 Parameter Min 4.5 2 .0 0 .8 -0.4 8 .0 +70 M ax 5.5 Unit V V V mA mA °C
DC ELECTRICAL CHARACTERISTICS over full operating conditions
Guaranteed Limit Symbol VIK V OH V OL IIH IIL IO ICC Parameter Input Clamp Voltage High Level Output Voltage Low Level Output Voltage High Level Input Current Low Level Input Current Output Short Circuit Current Supply Current Test Conditions VCC = min, IIN = -18 mA VCC = min, IOH = -0.4 mA VCC = min, IOL = 4 mA VCC = min, IOL = 8 mA VCC = max, VIN = 2.7 V VCC = max, VIN = 7.0 V VCC = max, VIN = 0.4 V Clock, Data Reset, Set -15 2.5 0.4 0.5 20 0 .1 -0.2 -0.4 -70 4.0 mA mA µA mA mA Min M ax -1.5 Unit V V V
VCC = max, VO = 2.25 V VCC = max (Note 1)
Note 1. ICC is measured with Data, Clock and Reset grounded, then with Data, Clock and Set grounded.
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IN74ALS74
CL = 50 pF, RL = 500 , Input tr = tf = 2.0 ns) Symbol fmax tPLH tPHL tPLH tPHL tsu th trec tw tw Maximum Clock Frequency
AC ELECTRICAL CHARACTERISTICS over full operating conditions (VCC = 5.0 V±10%,
Parameter Propagation Delay Time, Clock to Q or Q Propagation Delay Time, Clock to Q or Q Propagation Delay Time, Set or Reset to Q or Q Propagation Delay Time, Set or Reset to Q or Q Setup Time, Data to Clock Hold Time, Clock to Data Recovery Time, Set or Reset Inactive to Clock Pulse Width, Clock Pulse Width, Set or Reset 15 0 10 14.5 15 Min M ax 30 16 18 13 15 Unit M Hz ns ns ns ns ns ns ns ns ns
Figure 1. Switching Waveforms
Figure 2. Switching Waveforms
* Includes all probe and jig capacitance Figure 3. Switching Waveforms Figure 4. Test Circuit
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