MC74HCT244A Octal 3−State Noninverting Buffer/Line Driver/ Line
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MC74HCT244A Octal 3−State Noninverting Buffer/Line Driver/ Line Receiver with LSTTL−Compatible Inputs High−Performance Silicon−Gate CMOS The MC74HCT244A is identical in pinout to the LS244. This device may be used as a level converter for interfacing TTL or NMOS outputs to High−Speed CMOS inputs. The HCT244A is an octal noninverting buffer line driver line receiver designed to be used with 3−state memory address drivers, clock drivers, and other bus−oriented systems. The device has non−inverted outputs and two active−low output enables. The HCT244A is the non−inverting version of the HCT240. See also HCT241. PDIP−20 N SUFFIX CASE 738 1 SOIC−20W DW SUFFIX CASE 751D 1 Features • • • • • • • • Output Drive Capability: 15 LSTTL Loads TTL NMOS−Compatible Input Levels Outputs Directly Interface to CMOS, NMOS, and TTL Operating Voltage Range: 4.5 to 5.5 V Low Input Current: 1 mA In Compliance with the Requirements Defined by JEDEC Standard No. 7A Chip Complexity: 112 FETs or 28 Equivalent Gates Pb−Free Packages are Available A1 A2 A3 DATA INPUTS A4 B1 B2 2 18 4 16 6 14 8 12 11 9 13 7 15 5 YA1 YA2 YA3 YA4 YB1 NONINVERTING OUTPUTS TSSOP−20 DT SUFFIX CASE 948E 1 SOEIAJ−20 M SUFFIX CASE 967 1 PIN ASSIGNMENT ENABLE A 1 20 VCC A1 2 19 ENABLE B YB4 3 18 YA1 A2 4 17 B4 YB3 5 16 YA2 A3 6 15 B3 YB2 7 14 YA3 A4 8 13 B2 YB1 9 12 YA4 GND 10 11 B1 YB2 FUNCTION TABLE B3 B4 17 3 1 OUTPUT ENABLE A ENABLES ENABLE B 19 Inputs YB3 YB4 PIN 20 = VCC PIN 10 = GND Outputs Enable A, Enable B A, B YA, YB L L H L H X L H Z Z = high impedance, X = don’t care ORDERING AND MARKING INFORMATION Figure 1. Logic Diagram See detailed ordering, shipping, and marking information in the package dimensions section on page 5 of this data sheet. © Semiconductor Components Industries, LLC, 2006 1 Publication Order Number: MC74HCT244A/D MC74HCT244A ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ MAXIMUM RATINGS Symbol Parameter Value Unit – 0.5 to + 7 V V VCC DC Supply Voltage (Referenced to GND) Vin DC Input Voltage (Referenced to GND) – 0.5 to VCC + 0.5 Vout DC Output Voltage (Referenced to GND) – 0.5 to VCC + 0.5 V Iin DC Input Current, per Pin ± 20 mA Iout DC Output Current, per Pin ± 35 mA ICC DC Supply Current, VCC and GND Pins ± 75 mA PD Power Dissipation in Still Air, 750 500 450 mW Tstg Storage Temperature – 65 to + 150 _C TL Lead Temperature, 1 mm from Case for 10 Seconds (Plastic DIP, SOIC, SSOP or TSSOP Package) Plastic DIP† SOIC Package† TSSOP Package† This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high−impedance circuit. For proper operation, Vin and Vout should be constrained to the range GND v (Vin or Vout) v VCC. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC). Unused outputs must be left open. _C 260 †Derating − Plastic DIP: – 10 mW/_C from 65_ to 125_C − SOIC Package: – 7 mW/_C from 65_ to 125_C − TSSOP Package: − 6.1 mW/_C from 65_ to 125_C For high frequency or heavy load considerations, see Chapter 2 of the ON Semiconductor High−Speed CMOS Data Book (DL129/D). ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎ RECOMMENDED OPERATING CONDITIONS Symbol VCC Vin, Vout Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage, Output Voltage (Referenced to GND) TA Operating Temperature, All Package Types tr, tf Input Rise and Fall Time (Figure 1) Min Max Unit 4.5 5.5 V 0 VCC V – 55 + 125 _C 0 500 ns DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND) Guaranteed Limit VCC V – 55 to 25_C v 85_C v 125_C Unit Vout = 0.1 V or VCC – 0.1 V |Iout| v 20 mA 4.5 5.5 2 2 2 2 2 2 V Maximum Low−Level Input Voltage Vout = 0.1 V or VCC – 0.1 V |Iout| v 20 mA 4.5 5.5 0.8 0.8 0.8 0.8 0.8 0.8 V Minimum High−Level Output Voltage Vin = VIH or VIL |Iout| v 20 mA 4.5 5.5 4.4 5.4 4.4 5.4 4.4 5.4 V Vin = VIH or VIL |Iout| v 6 mA 4.5 3.98 3.84 3.7 Vin = VIH or VIL |Iout| v 20 mA 4.5 5.5 0.1 0.1 0.1 0.1 0.1 0.1 Vin = VIH or VIL |Iout| v 6 mA 4.5 0.26 0.33 0.4 Symbol Parameter VIH Minimum High−Level Input Voltage VIL VOH VOL Maximum Low−Level Output Voltage Test Conditions V Iin Maximum Input Leakage Current Vin = VCC or GND 5.5 ± 0.1 ± 1.0 ± 1.0 mA IOZ Maximum Three−State Leakage Current Output in High−Impedance State Vin = VIL or VIH; Vout = VCC or GND 5.5 ± 0.5 ± 5.0 ± 10 mA ICC Maximum Quiescent Supply Current (per Package) Vin = VCC or GND Iout = 0 mA 5.5 4 40 160 mA DICC Additional Quiescent Supply Current Vin = 2.4 V, Any One Input Vin = VCC or GND, Other Inputs lout = 0 mA 5.5 ≥ −55_C 25_C to 125_C 2.9 2.4 mA 1. Information on typical parametric values along with frequency or heavy load considerations can be found in Chapter 2 of the ON Semiconductor High−Speed CMOS Data Book (DL129/D). 2. Total Supply Current = ICC + ΣDICC. 2 MC74HCT244A ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎ ÎÎÎÎÎ Î ÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎ ÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎ AC ELECTRICAL CHARACTERISTICS (VCC = 5.0 V ± 10%, CL = 50 pF, Input tr = tf = 6 ns) Guaranteed Limit Symbol Parameter – 55 to 25_C v 85_C v 125_C Unit tPLH, tPHL Maximum Propagation Delay, A to YA or B to YB (Figures 1 and 3) 20 25 30 ns tPLZ, tPHZ Maximum Propagation Delay, Output Enable to YA or YB (Figures 2 and 4) 26 33 39 ns tPZL, tPZH Maximum Propagation Delay, Output Enable to YA or YB (Figures 2 and 4) 22 28 33 ns tTLH, tTHL Maximum Output Transition Time, Any Output (Figures 1 and 3) 12 15 18 ns Cin Maximum Input Capacitance 10 10 10 pF Cout Maximum Three−State Output Capacitance (Output in High−Impedance State) 15 15 15 pF NOTE: For propagation delays with loads other than 50 pF, and information on typical parametric values, see Chapter 2 of the ON Semiconductor High−Speed CMOS Data Book (DL129/D). Typical @ 25°C, VCC = 5.0 V CPD 55 Power Dissipation Capacitance (Per Enabled Output)* pF * Used to determine the no−load dynamic power consumption: PD = CPD VCC2 f + ICC VCC . For load considerations, see Chapter 2 of the ON Semiconductor High−Speed CMOS Data Book (DL129/D). SWITCHING WAVEFORMS INPUT A OR B OUTPUT YA OR YB tf tr 3V 2.7 V 1.3 V 0.3 V tPLH tPHL 90% 1.3 V 10% tTLH GND tTHL Figure 2. 3V ENABLE A OR B OUTPUT Y 1.3 V tPZL 1.3 V tPZH OUTPUT Y GND tPLZ tPHZ 1.3 V HIGH IMPEDANCE 10% VOL 90% VOH HIGH IMPEDANCE Figure 3. 3 MC74HCT244A ORDERING INFORMATION Device Shipping † Package MC74HCT244AN PDIP−20 MC74HCT244ANG PDIP−20 (Pb−Free) MC74HCT244ADW SOIC−20 MC74HCT244ADWG SOIC−20 (Pb−Free) MC74HCT244ADWR2 SOIC−20 MC74HCT244ADWR2G SOIC−20 (Pb−Free) 18 Units / Rail 38 Units / Rail 1000 / Tape & Reel MC74HCT244ADTR2 TSSOP−20* MC74HCT244ADTR2G TSSOP−20* MC74HCT244AF SOEIAJ−20 MC74HCT244AFG SOEIAJ−20 (Pb−Free) MC74HCT244AFEL SOEIAJ−20 MC74HCT244AFELG SOEIAJ−20 (Pb−Free) 2500 / Tape & Reel 40 Units / Rail 2000 / Tape & Reel †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. *These packages are inherently Pb−Free. MARKING DIAGRAMS PDIP−20 SOIC−20W TSSOP−20 20 20 20 20 HCT 244A ALYWG G HCT244A AWLYYWWG MC74HCT244AN AWLYYWWG SOEIAJ−20 1 1 1 A = Assembly Location WL, L = Wafer Lot YY, Y = Year WW, W = Work Week G or G = Pb−Free Package (Note: Microdot may be in either location) 5 74HCT244A AWLYWWG 1 MC74HCT244A PACKAGE DIMENSIONS PDIP−20 N SUFFIX PLASTIC DIP PACKAGE CASE 738−03 ISSUE E NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEAD WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. −A− 20 11 1 10 B L C −T− K SEATING PLANE M N E G F J D 20 PL 0.25 (0.010) 20 PL 0.25 (0.010) M T A M T B M DIM A B C D E F G J K L M N INCHES MIN MAX 1.010 1.070 0.240 0.260 0.150 0.180 0.015 0.022 0.050 BSC 0.050 0.070 0.100 BSC 0.008 0.015 0.110 0.140 0.300 BSC 0_ 15 _ 0.020 0.040 MILLIMETERS MIN MAX 25.66 27.17 6.10 6.60 3.81 4.57 0.39 0.55 1.27 BSC 1.27 1.77 2.54 BSC 0.21 0.38 2.80 3.55 7.62 BSC 0_ 15_ 0.51 1.01 M SOIC−20W DW SUFFIX CASE 751D−05 ISSUE G 20 11 X 45 _ h 1 10 20X B B 0.25 M T A S B S A L H M E 0.25 10X NOTES: 1. DIMENSIONS ARE IN MILLIMETERS. 2. INTERPRET DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994. 3. DIMENSIONS D AND E DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. 5. DIMENSION B DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE PROTRUSION SHALL BE 0.13 TOTAL IN EXCESS OF B DIMENSION AT MAXIMUM MATERIAL CONDITION. q A B M D 18X e A1 SEATING PLANE C T 6 DIM A A1 B C D E e H h L q MILLIMETERS MIN MAX 2.35 2.65 0.10 0.25 0.35 0.49 0.23 0.32 12.65 12.95 7.40 7.60 1.27 BSC 10.05 10.55 0.25 0.75 0.50 0.90 0_ 7_
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![Iin Vin Vin and Iin are the values given in [Series Impedance] Vload](http://s2.studylib.net/store/data/018206929_1-d327defc9b9e133751f2a98335f9c6fb-300x300.png)
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