M54HCT240/241/244 M74HCT240/241/244 OCTAL BUS BUFFER WITH 3 STATE OUTPUTS HCT240: INVERTED - HCT241/244 NON INVERTED . . . . . . . HIGH SPEED tPD = 13 ns (TYP.) at VCC = 5V LOW POWER DISSIPATION o ICC = 4 µA (MAX.) at TA = 25 C COMPATIBLE WITH TTL OUTPUTS VIH = 2V (MIN.) VIL = 0.8V (MAX) OUTPUT DRIVE CAPABILITY 15 LSTTL LOADS SYMMETRICAL OUTPUT IMPEDANCE |IOH| = IOL = 6 mA (MIN) BALANCED PROPAGATION DELAYS tPLH = tPHL PIN AND FUNCTION COMPATIBLE WITH 54/74LS240/241/244 B1R (Plastic Package) F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) ORDER CODES : M54HCTXXXF1R M74HCTXXXM1R M74HCTXXXB1R M74HCTXXXC1R DESCRIPTION The M54/74HCT240, HCT241 and HCT244 are high speed CMOS OCTAL BUS BUFFERs fabricated in silicon gate C2MOS technology. They have the same high speed performance of LSTTL combined with true CMOS low power consumption. The designer has a choise of select combination of inverting and non-inverting outputs, symmetrical G (active low output control) input, and complementary G and G inputs. Each control input governs four BUS BUFFERs. This integrated circuit has input and output characteristics that are fully compatible with 54/74 LSTTL logic families. M54/74HCT devices are designed to directly interface HSC2MOS systems with TTL and NMOS components. They are also plug in replacements for LSTTL devices giving a reduction of power consumption. These devices are designed to be used with 3 state memory address drivers, etc. All inputs are equipped with protection circuits against static discharge and transient excess voltage. PIN CONNECTION (top view) HCT240 September 1993 HCT241 HCT244 1/12 M54/M74HCT240/241/244 CHIP CARRIER HCT240 HCT241 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION (HCT241) PIN No SYMBOL 1 1G 2, 4, 6, 8 9, 7, 5, 3 1A1 to 1A4 2Y1 to 2Y4 Data Inputs Data Outputs 11, 13, 15, 17 2A1 to 2A4 18, 16, 14, 12 1Y1 to 1Y4 19 10 2G GND 20 V CC 2/12 NAME AND FUNCTION HCT244 PIN DESCRIPTION (HCT240) PIN No 1 SYMBOL 1G 2, 4, 6, 8 1A1 to 1A4 Data Inputs 9, 7, 5, 3 2Y1 to 2Y4 Data Outputs 11, 13, 15, 17 2A1 to 2A4 Data Inputs 18, 16, 14, 12 1Y1 to 1Y4 Data Outputs 19 2G 10 20 GND VCC NAME AND FUNCTION Output Enable Input Output Enabel Input Ground (0V) Positive Supply Voltage PIN DESCRIPTION (HCT244) PIN No SYMBOL 1 1G 2, 4, 6, 8 9, 7, 5, 3 1A1 to 1A4 2Y1 to 2Y4 Data Inputs Data Outputs Data Inputs 11, 13, 15, 17 2A1 to 2A4 Data Inputs Data Outputs 18, 16, 14, 12 1Y1 to 1Y4 Data Outputs Output Enabel Input Ground (0V) 19 10 2G GND Output Enabel Input Ground (0V) Positive Supply Voltage 20 VCC Positive Supply Voltage Output Enable Input NAME AND FUNCTION Output Enable Input M54/M74HCT240/241/244 IEC LOGIC SYMBOLS HCT240 HCT241 HCT244 TRUTH TABLE INPUT OUTPUT G L L G (HCT241) H H An L H Yn (HCT240) H L Yn (HCT241) L H Yn (HCT244) L H H L X Z Z Z X: ”H” or ”L” Z: High impedance CIRCUIT SCHEMATIC (1/8 PACKAGE) HCT240 HCT241/244 3/12 M54/M74HCT240/241/244 ABSOLUTE MAXIMUM RATINGS Symbol Value Unit VCC VI Supply Voltage DC Input Voltage -0.5 to +7 -0.5 to VCC + 0.5 V V VO DC Output Voltage -0.5 to VCC + 0.5 V IIK IOK DC Input Diode Current DC Output Diode Current ± 20 ± 20 mA mA IO DC Output Source Sink Current Per Output Pin ± 35 mA DC VCC or Ground Current ± 70 mA 500 (*) mW ICC or IGND Parameter PD Power Dissipation Tstg TL Storage Temperature Lead Temperature (10 sec) -65 to +150 300 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 RECOMMENDED OPERATING CONDITIONS Symbol VCC Parameter Supply Voltage VI Input Voltage VO Top Output Voltage Operating Temperature: M54HC Series M74HC Series Input Rise and Fall Time (VCC = 4.5 to 5.5V) tr, tf 4/12 Value 4.5 to 5.5 Unit V 0 to VCC V 0 to VCC -55 to +125 -40 to +85 0 to 500 V C o C ns o M54/M74HCT240/241/244 DC SPECIFICATIONS Test Conditions Symbol Parameter VCC (V) VIH High Level Input Voltage 4.5 to 5.5 V IL Low Level Input Voltage 4.5 to 5.5 V OH High Level Output Voltage VOL II ICC ∆ICC Low Level Output Voltage Input Leakage Current Quiescent Supply Current Additional worst case supply current Value TA = 25 oC 54HC and 74HC Min. Typ. Max. 2.0 -40 to 85 oC -55 to 125 oC 74HC 54HC Min. Max. Min. Max. 2.0 0.8 4.5 VI = IO=-20 µA VIH or IO=-6.0 mA V IL 4.5 VI = IO= 20 µA VIH or IO= 6.0 mA V IL 2.0 0.8 V 0.8 4.4 4.5 4.4 4.4 4.18 4.31 4.13 4.10 Unit V V 0.0 0.1 0.1 0.1 0.17 0.26 0.33 0.4 VI = VCC or GND ±0.1 ±1 ±1 µA 5.5 VI = VCC or GND 4 40 80 µA 5.5 Per Input pin VI = 0.5V or 2.4V Other Inputs at V CC or GND 2.0 2.9 3.0 mA 5.5 V 5/12 M54/M74HCT240/241/244 AC ELECTRICAL CHARACTERISTICS (C L = 50 pF, Input t r = tf = 6 ns) Test Conditions o TA = 25 C 54HC and 74HC Symbol Parameter VCC (V) CL (pF) tTLH tTHL tPLH tPHL Output Transition Time Propagation Delay Time 4.5 50 Typ. 7 Max. 12 4.5 50 15 22 tPLH tPHL Propagation Delay Time 4.5 4.5 150 50 21 15 30 25 tPZL tPZH Output Enable Time 4.5 4.5 150 50 RL = 1KΩ 21 17 tPLZ tPHZ Output Disable Time 4.5 4.5 150 50 RL = 1KΩ RL = 1KΩ CIN COUT Input Capacitance Output Capacitance Power Dissipation Capacitance CPD (*) Min. HCT240 HCT241/244 Value -40 to 85 oC -55 to 125 oC 74HC 54HC Max. 18 ns 28 33 ns 38 31 45 38 ns ns 33 30 41 38 50 45 ns ns 23 16 38 30 48 38 57 45 ns ns 5 10 10 10 10 pF pF 33 31 Min. Max. 15 Min. Unit pF (*) 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/8 (per circuit) TEST CIRCUIT ICC (Opr.) HCT240 6/12 M54/M74HCT240/241/244 SWITCHING CHARACTERISTICS TEST WAVEFORM 7/12 M54/M74HCT240/241/244 Plastic DIP20 (0.25) MECHANICAL DATA mm DIM. MIN. a1 0.254 B 1.39 TYP. inch MAX. MIN. TYP. MAX. 0.010 1.65 0.055 0.065 b 0.45 0.018 b1 0.25 0.010 D 25.4 1.000 E 8.5 0.335 e 2.54 0.100 e3 22.86 0.900 F 7.1 0.280 I 3.93 0.155 L Z 3.3 0.130 1.34 0.053 P001J 8/12 M54/M74HCT240/241/244 Ceramic DIP20 MECHANICAL DATA mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 25 0.984 B 7.8 0.307 D E 3.3 0.5 e3 0.130 1.78 0.020 22.86 0.070 0.900 F 2.29 2.79 0.090 0.110 G 0.4 0.55 0.016 0.022 I 1.27 1.52 0.050 0.060 L 0.22 0.31 0.009 0.012 M 0.51 1.27 0.020 0.050 N1 P Q 4° (min.), 15° (max.) 7.9 8.13 5.71 0.311 0.320 0.225 P057H 9/12 M54/M74HCT240/241/244 SO20 MECHANICAL DATA mm DIM. MIN. TYP. A a1 inch MAX. MIN. TYP. 2.65 0.10 0.104 0.20 a2 MAX. 0.004 0.007 2.45 0.096 b 0.35 0.49 0.013 0.019 b1 0.23 0.32 0.009 0.012 C 0.50 0.020 c1 45° (typ.) D 12.60 13.00 0.496 0.512 E 10.00 10.65 0.393 0.419 e 1.27 0.050 e3 11.43 0.450 F 7.40 7.60 0.291 0.299 L 0.50 1.27 0.19 0.050 M S 0.75 0.029 8° (max.) P013L 10/12 M54/M74HCT240/241/244 PLCC20 MECHANICAL DATA mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 9.78 10.03 0.385 0.395 B 8.89 9.04 0.350 0.356 D 4.2 4.57 0.165 0.180 d1 2.54 0.100 d2 0.56 0.022 E 7.37 8.38 0.290 0.330 e 1.27 0.050 e3 5.08 0.200 F 0.38 0.015 G 0.101 0.004 M 1.27 0.050 M1 1.14 0.045 P027A 11/12 M54/M74HCT240/241/244 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use ascritical components in life support devices or systems without express written approval of SGS-THOMSON Microelectonics. 1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A 12/12