M54/74HC245/640/643 M54/74HC245/640/643 OCTAL BUS TRANSCEIVER (3-STATE): HC245 NON INVERTING HC640 INVERTING, HC643 INVERTING/NON INVERTING . . . . . . . . HIGH SPEED tPD = 10 ns (TYP.) at VCC = 5V LOW POWER DISSIPATION o ICC = 4 µA (MAX.) at TA = 25 C HIGH NOISE IMMUNITY VNIH = VINL = 28 % VCC (MIN.) OUTPUT DRIVE CAPABILITY 15 LSTTL LOADS SYMMETRICAL OUTPUT IMPEDANCE |IOH| = IOL = 6 mA (MIN) BALANCED PROPAGATION DELAYS tPLH = tPHL WIDE OPERATING VOLTAGE RANGE VCC (OPR) = 2 V TO 6 V PIN AND FUNCTION COMPATIBLE WITH 54/74LS245/640/643 B1R (Plastic Package) F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) ORDER CODES : M54HCXXXF1R M74HCXXXM1R M74HCXXXB1R M74HCXXXC1R DESCRIPTION The M54/74HC245, HC640 and HC643 utilise silicon gate C2MOS technology to achive operating speeds equivalent to LSTTL devices. All input are equipped with protection circuits against static discharge and transient discharge and transient excess voltage. Along with the low power dissipation and high noise 2 immunity of standards C MOS integrated circuit, it possesses the capability to drive 15 LSTTL loads. These IC’s are intended for two-way asynchronous communication between data buses, and the direction of data trasmission is determined by DIR input. The enable input (G) can be used to disable the device so that the buses are effectively isolated. IT IS PROHIBITED TO APPLY A SIGNAL TO A BUS TERMINAL WHEN IT IS IN OUTPUT MODE AND WHEN A BUS THERMINAL IS FLOATING (HIGH IMPEDANCE STATE), IT IS REQUESTED TO FIX THE INPUT LEVEL BY MEANS OF EXTERNAL PULL DOWN OR PULL UP RESISTOR. PIN CONNECTION (top view) HC245 October 1993 HC640 HC643 1/11 M54/M74HC245/640/643 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No SYMBOL 1 2, 3, 4, 5, 6, 7, 8, 9 DIR A1 to A8 Directional Control Data Inputs/Outputs NAME AND FUNCTION 18, 17, 16, 15, 14, 13, 12, 11 B1 to B8 Data Inputs/Outputs 19 G Output Enabel Input (Active LOW) 10 GND Ground (0V) 20 VCC Positive Supply Voltage IEC LOGIC SYMBOLS HC245 HC640 HC643 TRUTH TABLE INPUT OUTPUT DIR L A BUS OUTPUT B BUS INPUT HC245 A=B HC640 A=B HC643 A=B L H INPUT OUTPUT B=A B=A B=A H X Z Z Z Z Z X: ”H” or ”L” Z: High impedance 2/11 FUNCTION G L M54/M74HC245/640/643 LOGIC DIAGRAM (HC640) NOTE: IN CASE OF HC245 OR HC643, INPUT INVERTERS MARKED* AT A BUS AND B BUS ARE ELIMINATED RESPECTIVELY ABSOLUTE MAXIMUM RATING Symbol Parameter VCC Supply Voltage VI VO DC Input Voltage DC Output Voltage IIK IOK IO ICC or IGND Value Unit -0.5 to +7 V -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 V V DC Input Diode Current ± 20 mA DC Output Diode Current DC Output Source Sink Current Per Output Pin ± 20 ± 35 mA mA DC VCC or Ground Current PD Tstg Power Dissipation Storage Temperature TL Lead Temperature (10 sec) ± 70 mA 500 (*) -65 to +150 mW o C 300 o 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 3/11 M54/M74HC245/640/643 RECOMMENDED OPERATING CONDITIONS Symbol Parameter VCC VI Supply Voltage Input Voltage VO Output Voltage Top Operating Temperature: tr, tf Input Rise and Fall Time Value Unit 2 to 6 0 to VCC V V 0 to VCC M54HC Series M74HC Series V o -55 to +125 -40 to +85 0 to 1000 VCC = 2 V VCC = 4.5 V 0 to 500 VCC = 6 V 0 to 400 C C ns o DC SPECIFICATIONS Test Conditions Symbol VIH V IL V OH VOL Parameter High Level Input Voltage Low Level Input Voltage High Level Output Voltage Low Level Output Voltage VCC (V) 2.0 Min. 1.5 4.5 3.15 6.0 2.0 4.2 6.0 2.0 Max. -40 to 85 oC -55 to 125 oC 74HC 54HC Min. 1.5 Max. 3.15 4.2 4.2 0.5 0.5 1.35 1.35 1.35 1.8 2.0 1.9 1.9 4.5 4.4 4.4 6.0 4.5 5.9 4.18 6.0 4.31 5.9 4.13 5.9 4.10 6.0 IO=-7.8 mA 5.68 5.8 5.63 5.60 6.0 V 1.8 1.9 4.4 2.0 4.5 V 0.5 1.8 Unit Max. 3.15 V 0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.1 0.0 0.1 0.1 0.1 0.17 0.18 0.26 0.26 0.33 0.33 0.40 0.40 VI = VCC or GND ±0.1 ±1 ±1 µA 80 µA VI = IO= 20 µA VIH or V IL IO= 6.0 mA IO= 7.8 mA IOZ 3 State Output Off State Current 6.0 VI = VIH or VIL VO = VCC or GND ±0.5 ±5.0 ICC Quiescent Supply Current 6.0 VI = VCC or GND 4 40 4/11 Min. 1.5 VI = IO=-20 µA VIH or V IL IO=-6.0 mA 4.5 4.5 6.0 Input Leakage Current Typ. 4.5 6.0 II Value TA = 25 oC 54HC and 74HC V µA M54/M74HC245/640/643 AC ELECTRICAL CHARACTERISTICS (C L = 50 pF, Input t r = tf = 6 ns) Test Conditions o Symbol Parameter VCC (V) CL (pF) tTLH tTHL Output Transition Time 2.0 4.5 50 Propagation Delay Time 6.0 2.0 4.5 6.0 tPLH tPHL tPZL tPZH tPLZ tPHZ Output Enable Time Output Disable Time 2.0 4.5 6.0 2.0 4.5 TA = 25 C 54HC and 74HC Min. 50 150 50 RL = 1KΩ 6.0 2.0 4.5 6.0 150 RL = 1KΩ 2.0 4.5 6.0 50 RL = 1KΩ Value -40 to 85 oC -55 to 125 oC 74HC 54HC Typ. 25 7 Max. 60 12 6 33 12 10 10 90 18 15 13 115 23 20 15 135 27 23 48 16 14 48 16 120 24 20 150 30 150 30 26 190 38 180 36 31 225 45 14 63 21 18 26 180 36 31 32 225 45 38 38 270 54 46 ns 37 17 15 150 30 26 190 38 32 225 45 38 ns 10 10 10 pF CIN CI/OUT Input Capacitance Output Capacitance DIR, G An, Bn 5 13 CPD (*) Power Dissipation Capacitance HC245 HC640/643 39 37 Min. Max. 75 19 Min. Max. 90 18 Unit ns ns ns ns pF 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) 5/11 M54/M74HC245/640/643 SWITCHING CHARACTERISTICS TEST WAVEFORM TEST CIRCUIT ICC (Opr.) C PD CALCULATION CPD is to be calculated with the following formula by using the measured value of ICC (Opr.) in the test circuit opposite. I CC (Opr.) CPD = f IN x VCC 6/11 M54/M74HC245/640/643 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 7/11 M54/M74HC245/640/643 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 8/11 M54/M74HC245/640/643 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 9/11 M54/M74HC245/640/643 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 10/11 M54/M74HC245/640/643 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 11/11