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| M54/74HCT125 M54/74HCT126 QUAD BUS BUFFERS (3-STATE) .HI .LOWPOWERDI .OUTPUTDRI .BALANCEDPROPAGATI .SYMMETRI .COMPATI .PI DESCRIPTION GH SPEED tPD = 12 ns (TYP.) AT VCC = 5 V SSIPATION ICC = 4 A (MAX.) AT 25 C VE CAPABILITY 15 LSTTL LOADS ON DELAYS tPLH = tPHL CAL OUTPUT IMPEDANCE IOL = IOH = 6 mA (MIN.) BLE WITH TTL OUTPUTS VIH = 2V (MIN.) VIL = 0.8V (MAX) N AND FUNCTION COMPATIBLE WITH 54/74LS125/126 B1R (Plastic Package) F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) ORDER CODES : M54HCTXXXF1R M74HCTXXXM1R M74HCTXXXB1R M74HCTXXXC1R The M54/74HCT125/126 are high speed CMOS QUAD BUS BUFFER (3-STATE) FABRICATED IN SILICON GATE C2MOS technology. They have the same high speed performance of LSTTL combined with true CMOS low power consumption. These devices require the same 3-STATE control input G to be taken high to make the output go into the high impedance state.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. All inputs are equipped with protection circuits against static discharge and transient excess voltage. INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN CONNECTIONS (top view) HCT125 HCT126 NC = No Internal Connection October 1993 1/10 M54/M74HCT125/126 CHIP CARRIER HCT125 HCT126 TRUTH TABLE (HCT125) A X L H G H L L Y Z L H TRUTH TABLE (HCT126) A X L H G L H H Y Z L H PIN DESCRIPTION (HCT125) PIN No 1, 4, 10, 13 2, 5, 9, 12 3, 6, 8, 11 7 14 SYMBOL G1 to G4 A1 to A4 Y1 to Y4 GND VCC NAME AND FUNCTION Output Enable Input Data Inputs Data Outputs Ground (0V) Positive Supply Voltage PIN DESCRIPTION (HCT126) PIN No 1, 4, 10, 13 2, 5, 9, 12 3, 6, 8, 11 7 14 SYMBOL G1 to G4 A1 to A4 Y1 to Y4 GND VCC NAME AND FUNCTION Output Enable Input Data Inputs Data Outputs Ground (0V) Positive Supply Voltage IEC LOGIC SYMBOLS HCT125 HCT126 2/10 M54/M74HCT125/126 CIRCUIT DIAGRAM HCT125 HCT126 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 35 70 500 (*) -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 tothe device may occur. Functional operation under these conditions is not implied. (*) 500 mW: 65 oC derate to 300 mW by 10mW/oC: 65 oC to 85 oC 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 (VCC = 4.5 to 5.5V) Parameter Value 4.5 to 5.5 0 to VCC 0 to VCC -55 to +125 -40 to +85 0 to 500 Unit V V V o o C C ns 3/10 M54/M74HCT125/126 DC SPECIFICATIONS Test Conditions Symbol Parameter VCC (V) 4.5 to 5.5 4.5 to 5.5 4.5 VI = IO=-20 A VIH or IO=-6.0 mA V IL VI = IO= 20 A VIH or IO= 6.0 mA V IL VI = VCC or GND VI = VCC or GND VI = VIH or VIL VO = VCC or GND Per Input pin VI = 0.5V or V I = 2.4V Other Inputs at V CC or GND IO= 0 4.4 4.18 4.5 4.31 0.0 0.17 0.1 0.26 0.1 4 0.5 2.0 TA = 25 oC 54HC and 74HC Min. Typ. Max. 2.0 Value -40 to 85 oC -55 to 125 oC 74HC 54HC Min. Max. Min. Max. 2.0 2.0 Unit VIH High Level Input Voltage Low Level Input Voltage High Level Output Voltage V V IL 0.8 0.8 0.8 V V OH 4.4 4.13 0.1 0.33 1 40 5 2.9 4.4 4.10 0.1 V 0.4 1 80 10 3.0 A A A mA V VOL Low Level Output Voltage 4.5 II ICC IOZ ICC Input Leakage Current Quiescent Supply Current 3 State Output Off State Current Additional worst case supply current 5.5 5.5 6.0 5.5 AC ELECTRICAL CHARACTERISTICS (Input t r = t f = 6 ns) Test Conditions Symbol Parameter VCC (V) 4.5 4.5 4.5 4.5 4.5 4.5 CL (pF) 50 50 150 50 150 50 TA = 25 oC 54HC and 74HC Min. Typ. Max. 7 12 13 17 15 19 17 5 56 21 27 24 30 24 10 Value -40 to 85 oC -55 to 125 oC 74HC 54HC Min. Max. Min. Max. 15 18 26 34 30 38 30 10 32 41 36 45 36 10 Unit tTLH tTHL tPLH tPHL tPZL tPZH tPLZ tPHZ CIN CPD (*) Output Transition Time Propagation Delay Time 3 State Output Enable Time 3 State Output Disable Time Input Capacitance Power Dissipation Capacitance ns ns ns ns ns ns pF pF RL = 1 K RL = 1 K RL = 1 K (*) 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 4/10 M54/M74HCT125/126 TEST CIRCUIT ICC (Opr.) HCT125 HCT126 THE OTHER INPUTS ARE CONNECTED TO VCC LINE OR GND LINE SWITCHING CHARACTERISTICS TEST WAVEFORM HCT125 HCT126 5/10 M54/M74HCT125/126 Plastic DIP14 MECHANICAL DATA mm MIN. a1 B b b1 D E e e3 F I L Z 1.27 3.3 2.54 0.050 8.5 2.54 15.24 7.1 5.1 0.130 0.100 0.51 1.39 0.5 0.25 20 0.335 0.100 0.600 0.280 0.201 1.65 TYP. MAX. MIN. 0.020 0.055 0.020 0.010 0.787 0.065 inch TYP. MAX. DIM. P001A 6/10 M54/M74HCT125/126 Ceramic DIP14/1 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 1.52 0.38 15.24 2.79 0.55 1.52 0.31 2.54 10.3 8.05 5.08 0.307 0.090 0.016 0.046 0.009 0.060 3.3 0.015 0.600 0.110 0.022 0.060 0.012 0.100 0.406 0.317 0.200 TYP. MAX. 20 7.0 0.130 MIN. inch TYP. MAX. 0.787 0.276 DIM. P053C 7/10 M54/M74HCT125/126 SO14 MECHANICAL DATA DIM. MIN. A a1 a2 b b1 C c1 D E e e3 F G L M S 3.8 4.6 0.5 8.55 5.8 1.27 7.62 4.0 5.3 1.27 0.68 8 (max.) 0.149 0.181 0.019 8.75 6.2 0.35 0.19 0.5 45 (typ.) 0.336 0.228 0.050 0.300 0.157 0.208 0.050 0.026 0.344 0.244 0.1 mm TYP. MAX. 1.75 0.2 1.65 0.46 0.25 0.013 0.007 0.019 0.003 MIN. inch TYP. MAX. 0.068 0.007 0.064 0.018 0.010 P013G 8/10 M54/M74HCT125/126 PLCC20 MECHANICAL DATA mm MIN. A B D d1 d2 E e e3 F G M M1 1.27 1.14 7.37 1.27 5.08 0.38 0.101 0.050 0.045 9.78 8.89 4.2 2.54 0.56 8.38 0.290 0.050 0.200 0.015 0.004 TYP. MAX. 10.03 9.04 4.57 MIN. 0.385 0.350 0.165 0.100 0.022 0.330 inch TYP. MAX. 0.395 0.356 0.180 DIM. P027A 9/10 M54/M74HCT125/126 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. (c) 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 10/10 |
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