AVG Semiconductors Technical Data Dual D-Type Positive-Edge DV74LS74A DV74ALS74A vl Triggered Flip-Flop Each of the two independent positive edge-triqgered flip-flops in this circuit has individual D, clock, clear and preset inputs, and complementary Q and Q outputs. AVG's LS operates over extended Vcc from 4.5 to 5.5 V AVGs LS and ALS both have guaranteed DC and AC specification over full temperature and Vcc range Switching specifications for ALS at 50 pF AVG's ALS has the lowest speed power product N Suffix Plastic DIP AVG-001Case D Suffix Plastic SOP AVG-002 Case (4pJ per gate typical) of all logic series TRUTH TABLE PIN ASSIGNMENT Inputs Outputs 01 ra 9 L H x x H L o1 5 gy H | L x |x| Lei H L L x x H* H* RESET! + H | H | tT /H) AT SETI H | H r toLL OH 8 a H H L [|x| aia clock2 U H=High Level Logic L=Low Level Logic p2 12 9 99 X = Either Low or High Logic Level T = Positive Edge Transition Q = Previous Condition of Q RESET2 Ht | PIN 14 = Voc * = This condition is nonstable, it will not persist PIN: / SET? GND when preset and clear inputs return to their inactive (high) level. The output levels in this condition are not guaranteed to meet the Vou specification. ABSOLUTE MAXIMUM RATINGS Maximum ratings are those values beyond which damage to the device may occur. symbol Parameter LS74A ALS74A Unit Vcc | Supply Voltage +7.0 7.0 V Vin | Input Voltage 0.5 to 7 70 Vv Tsta | Storage Temperature Range -65 to+150 65 to+150 C 1-800-AVG-SEMI 3-47 DV74LS74A, DV74ALS74A74 GUARANTEED OPERATING CONDITIONS over full range Unit Symbol Parameter LS74A ALS7T4A Min Max Min Max Vcc | Supply Voltage 4.5 5.5 4.5 5.5 V ViH_| High Level Input Voltage ee 2.0 2.0 V Vi__| Low Level Input Voltage 0.8 0.8 Vv loH | High Level Output Current 0.4 0.4 mA lo.__| Low Level Output Current 8 8 mA Ta __| Ambient Temperature Range ee -10 to +70 =10 to +70 "C DC ELECTRICAL CHARACTERISTICS over full operating conditions | Symbol Parameter Conditions | LS74A ALS7T4A Unit Min | Typ | Max]? Min Typ | Max Vik | Input Clamp Voltage | Vcc = min, lin =-18 mA 1.5 )-1.5] Vv Vox | High Level Output Vec=min, lon=max Voc-2| 3.5 Vec-2 _ Voltage Vo. | Low Level Output VCC=min; lo. =4.0 mA 0.25 | 0.4 025/04] V | Vottage Vec=min; lot =8.0 mA 0.35 | 0.5 0.35) 057 V hint =| High Level Input Data, Clock 20 20 7 pA Vonmax, Vine 2.7V | Set Reset 40 40 | yA Vec=max, Vin= 7V Data, Clock 0.4 0.1 | mA 7 | Set, Reset 0.2 0.2 | mA Ne Low Level Input Data, Clock O.4 0.2] mA ee Vineo.4v | Set Reset -0.8 -0.4 | mA lo Short Circuit Current | Vec=max; Vo=2.25V -20 =110] =30 _ =-112 | mA Icc | Supply Current Vec=max 8.0 24 | 4 | ma SWITCHING CHARACTERISTICS over full operating conditions Symbol Parameter LS74A ALS74A Unit CL= 15 pF C.=50 pF RL=5002 Min Max Min Max fMax | Maximum Clock Frequency 25 34 MHz tpLy_| Set or Reset to Output (Q or Q) 25 3 13 | ns teu | Set or Reset to Output (Q or Q) 40 5 15 ns teLH | Clock to Output (Q or Q) 25 5 16 | ns tpHL | Clock to Output (Q or Q) 40 5 18 | ns tec | Clock Recovery Time 15 | 10 ns DV74LS74A, DV74ALSA 3-48 1-800-AVG-SEMIAC SETUP REQUIREMENTS over full operating conditions vl Symbol Paramotor | LS7T4A | ALST4A Unit J min | Max | Min | Max tw Clock 25 14.5 ns tw Set, Reset 2 15 ns ts | Data Setup Time 20 is | ns * Hold Time | 5.0 0 | ns SWITCHING WAVEFORMS VALID av DATA 1.3V Cap av CLOCK oe) ~~ - aw LOAD or 1.3V RESET GND _le) = @ 1.3 Vou Tre Vou b 14M tree bo af 1.3 GND 1-800-AVG-SEMI 3-49 DV74LS74A, DV74ALSA