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M74HC279 Dataheets PDF



Part Number M74HC279
Manufacturers ST Microelectronics
Logo ST Microelectronics
Description QUAD S-R LATCH
Datasheet M74HC279 DatasheetM74HC279 Datasheet (PDF)

M54HC279 M74HC279 QUAD S - R LATCH . . . . . . . . HIGH SPEED tPD = 12 ns (TYP.) AT VCC = 5 V LOW POWER DISSIPATION ICC = 2 µA (MAX.) AT TA = 25 °C HIGH NOISE IMMUNITY VNIH = VNIL = 28 % VCC (MIN.) OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS SYMMETRICAL OUTPUT IMPEDANCE IOH = IOL = 4 mA (MIN.) BALANCED PROPAGATION DELAYS tPLH = tPHL WIDE OPERATING VOLTAGE RANGE VCC (OPR) = 2 V TO 6 V PIN AND FUNCTION COMPATIBLE WITH 54/74LS279 B1R (Plastic Package) F1R (Ceramic Package) M1R (Micro Package) C1.

  M74HC279   M74HC279


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M54HC279 M74HC279 QUAD S - R LATCH . . . . . . . . HIGH SPEED tPD = 12 ns (TYP.) AT VCC = 5 V LOW POWER DISSIPATION ICC = 2 µA (MAX.) AT TA = 25 °C HIGH NOISE IMMUNITY VNIH = VNIL = 28 % VCC (MIN.) OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS SYMMETRICAL OUTPUT IMPEDANCE IOH = IOL = 4 mA (MIN.) BALANCED PROPAGATION DELAYS tPLH = tPHL WIDE OPERATING VOLTAGE RANGE VCC (OPR) = 2 V TO 6 V PIN AND FUNCTION COMPATIBLE WITH 54/74LS279 B1R (Plastic Package) F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) ORDER CODES : M54HC279F1R M74HC279M1R M74HC279B1R M74HC279C1R PIN CONNECTIONS (top view) DESCRIPTION The M54/74HC279 is a high speed CMOS QUAD S - R LATCH fabricated in silicon gate C2MOS technology. It has the same high speed performance of LSTTL combined with true CMOS low power consumption. All inputs are equipped with protection circuits against static discharge and transient excess voltage. INPUT AND OUTPUT EQUIVALENT CIRCUIT NC = No Internal Connection March 1993 1/10 M54/M74HC279 PIN DESCRIPTION PIN No SYMBOL 1, 5, 10. 14 1R to 4R 2, 3, 6, 11, 1S1, 1S2, 2S, 12, 15 3S1, 3S2, 4S 4, 7, 9, 13 1Q to 4Q 8 GND 16 V CC NAME AND FUNCTION Reset Inputs (Active LOW) Set Inputs (Active LOW) Outputs Ground (0V) Positive Supply Voltage IEC LOGIC SYMBOL TRUTH TABLE S # H L H L R H H L L Q Q0 H L H NOTE: Q0 = THE LEVEL OF Q BEFORE THE INDICRTED INPUT CONDITION WAS ESTABLISHED. # FOR LATCHES WITH DOUBLE S INPUT: H = BOTH S INPUTS HIGH L = ONE OF BOTH INPUTS LOW LOGIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol VCC VI VO IIK IOK IO ICC or IGND PD Tstg TL Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Source Sink Current Per Output Pin DC VCC or Ground Current Power Dissipation Storage Temperature Lead Temperature (10 sec) Parameter Value -0.5 to +7 -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 ± 20 ± 20 ± 25 ± 50 500 (*) -65 to +150 300 Unit V V V mA mA mA mA mW o o C C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition isnotimplied. (*) 500 mW: ≅ 65 oC derate to 300 mW by 10mW/oC: 65 oC to 85 oC 2/10 M54/M74HC279 RECOMMENDED OPERATING CONDITIONS Symbol VCC VI VO Top tr, tf Supply Voltage Input Voltage Output Voltage Operating Temperature: M54HC Series M74HC Series Input Rise and Fall Time Parameter Value 2 to 6 0 to VCC 0 to VCC -55 to +125 -40 to +85 0 to 1000 0 to 500 0 to 400 Unit V V V C C ns o o VCC = 2 V VCC = 4.5 V VCC = 6 V DC SPECIFICATIONS Test Conditions Symbol Parameter VCC (V) 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 4.5 6.0 VOL Low Level Output Voltage 2.0 4.5 6.0 4.5 6.0 II ICC Input Leakage Current Quiescent Supply Current 6.0 6.0 1.9 4.4 5.9 4.18 5.68 2.0 4.5 6.0 4.31 5.8 0.0 0.0 0.0 0.17 0.18 0.1 0.1 0.1 0.26 0.26 ±0.1 2 TA = 25 oC 54HC and 74HC Min. 1.5 3.15 4.2 0.5 1.35 1.8 VI = IO=-20 µA VIH or V IL IO=-4.0 mA IO=-5.2 mA VI = IO= 20 µA VIH or V IL IO= 4.0 mA IO= 5.2 mA VI = VCC or GND VI = VCC or GND 1.9 4.4 5.9 4.13 5.63 0.1 0.1 0.1 0.33 0.33 ±1 20 Typ. Max. Value -40 to 85 oC -55 to 125 oC 74HC 54HC Min. 1.5 3.15 4.2 0.5 1.35 1.8 1.9 4.4 5.9 4.10 5.60 0.1 0.1 0.1 0.40 0.40 ±1 40 µA µA V V Max. Min. 1.5 3.15 4.2 0.5 1.35 1.8 V Max. V Unit VIH High Level Input Voltage Low Level Input Voltage High Level Output Voltage V IL V OH 3/10 M54/M74HC279 AC ELECTRICAL CHARACTERISTICS (C L = 50 pF, Input t r = tf = 6 ns) Test Conditions Symbol Parameter VCC (V) 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 TA = 25 C 54HC and 74HC Min. Typ. 30 8 7 45 15 13 38 12 10 42 14 12 5 18 Max. 75 15 13 130 26 22 100 20 17 120 24 20 10 o Value -40 to 85 oC -55 to 125 oC 74HC 54HC Min. Max. 95 19 16 165 33 28 125 25 21 150 30 26 10 Min. Max. 110 22 19 195 39 33 150 30 26 180 36 31 10 Unit tTLH tTHL tPLH tPHL tPLH tPHL tPHL Output Transition Time Propagation Delay Time (S1, S2 - Q) Propagation Delay Time (S - Q) Propagation Delay Time (R - Q) Input Capacitance Power Dissipation Capacitance ns ns ns ns pF pF CIN CPD (*) (*) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to Test Circuit). Average operting current can be obtained by the following equation. ICC(opr) = CPD • VCC • fIN + ICC SWITCHING CHARACTERISTICS TEST WAVEFORM 4/10 M54/M74HC279 TEST CIRCUIT ICC (Opr.) 5/10 M54/M74HC279 Plastic DIP16 (0.25) MECHANICAL DATA mm MIN. a1 B b b1 D E e e3 F I L Z 3.3 1.27 8.5 2.54 17.78 7.1 5.1 0.130 0.050 0.51 0.77 0.5 0.25 20 0.335 0.100 0.700 0.280 0.201 1.65 TYP. MAX. MIN. 0.020 0.030 0.020 0.010 0.787 0.065 inch TYP. MAX. DIM. P001C 6/10 M54/M74HC279 Ceramic DIP16/1 MECHANICAL DATA mm MIN. A B D E e3 F G H L M N P Q 7.8 2.29 0.4 1.17 0.22 0.51 0.38 17.78 2.79 0.55 1.52 0.31 1.27 10.3 8.05 5.08 0.307 0.090 0.016 0.046 0.009 0.020 3.3 0.015 0.700 0.110 0.022 0.060 0.012 0.050 0.406 0.317 0.200 TYP. MAX. 20 7 0.130 MIN. inch TYP. MAX. 0.787 0.276 DIM. P.


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