M54/M74HCT257 M54/M74HCT258 HCT257 QUAD 2 CHANNEL MULTIPLEXER (3-STATE) HCT258 QUAD 2 CHANNEL MULTIPLEXER (3-STATE, INVERTING) . . . . . . . HIGH SPEED tPD = 16 ns (TYP.) at VCC = 5 V LOW POWER DISSIPATION 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 54/74LS257/258 B1R (Plastic Package) F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) ORDER CODES : M54HCTXXXF1R M74HCTXXXM1R M74HCTXXXB1R M74HCTXXXC1R DESCRIPTION The M54/74HCT257 and the M54/74HCT258 are high speed CMOS MULTIPLEXERs fabricated with silicon gate C2MOS technology. They have the same high speed performance of LSTTL combined with true CMOS low power consumption. These IC’s are composed of an independent 2channel multiplexer with common SELECT and ENABLE INPUT. The M54/74HCT258 is an inverting multiplexer while the M54/74HCT257 is a non-inverting multiplexer. When the ENABLE INPUT is held ”High”, outputs of both IC’s become high-impedance state. If SELECT INPUT is held ”Low”, ”A” data is selected, when SELECT INPUT is high ”H”, ”B” data is chosen. PIN CONNECTIONS (top view) HCT257 HCT258 All inputs are equipped with protection circuits against static discharge and transient excess voltage. 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 replace- February 1993 1/12 M54/M74HCT257/258 INPUT AND OUTPUT EQUIVALENT CIRCUIT CHIP CARRIER HCT257 HCT258 NC = No Internal Connection PIN DESCRIPTION (HCT257) PIN No SYMBOL NAME AND FUNCTION 1 SELECT Common Data Select Input 2, 5, 14, 11 3, 6, 13, 10 1A to 4A 1B to 4B 4, 7, 12, 9 1Y to 4Y 15 OE 8 16 GND V CC 2/12 PIN DESCRIPTION (HCT258) PIN No SYMBOL 1 SELECT Common Data Select Input NAME AND FUNCTION Data Input From Source A Data Inputs from Source B 2, 5, 14, 11 3, 6, 13, 10 1A to 4A 1B to 4B Data Input From Source A Data Inputs from Source B 3 State Multiplexer Outputs 4, 7, 12, 9 1Y to 4Y 3 State Multiplexer Outputs 3 State Output Enable Inputs (Active LOW) 15 OE 3 State Output Enable Inputs (Active LOW) Ground (0V) Positive Supply Voltage 8 16 GND VCC Ground (0V) Positive Supply Voltage M54/M74HCT257/258 IEC LOGIC SYMBOL HCT257 HCT258 HCT257 HCT258 LOGIC DIAGRAM TRUTH TABLE INPUTS OUTPUTS OE H SELECT X A X B X Y (257) Z Y (258) Z L L L X L H L L L H H X X L H L L H L H X H H L X = DON’T CARE Z = HIGH IMPEDANCE 3/12 M54/M74HCT257/258 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/M74HCT257/258 DC SPECIFICATIONS Test Conditions Symbol Parameter TA = 25 oC 54HC and 74HC 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 Min. 4.5 4.5 VI = IO= 20 µA VIH or IO= 4.0 mA V IL 3-State Output Off State Current 5.5 Input Leakage Current ICC ∆ICC IOZ II Low Level Output Voltage Max. Min. Max. 2.0 0.8 VI = IO=-20 µA VIH or IO=-4.0 mA V IL VOL Typ. 2.0 Value -40 to 85 oC -55 to 125 oC 74HC 54HC Min. Max. 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 ±0.5 ±5 ±10 µA 5.5 VI = VCC or GND ±0.1 ±1 ±1 µA Quiescent Supply Current 5.5 VI = VCC or GND 1 10 20 µA Additional worst case supply current 5.5 Per Input pin VI = 0.5V or V I = 2.4V Other Inputs at V CC or GND 2.0 2.9 3.0 mA V 5/12 M54/M74HCT257/258 AC ELECTRICAL CHARACTERISTICS (C L = 50 pF, Input t r = tf = 6 ns) Test Conditions o Symbol Parameter VCC (V) tTLH tTHL tPLH tPHL Output Transition Time Propagation Delay Time (A, B - Y) 4.5 tPLH tPHL 4.5 tPZL tPZH Propagation Delay Time (SELECT - Y) Output Enable Time 4.5 tPLZ tPHZ CIN Output Disable Time Input Capacitance 4.5 COUT Output Capacitance Power Dissipation Capacitance CPD (*) 4.5 TA = 25 C 54HC and 74HC Min. Typ. 7 Max. 12 HCT257 19 30 HCT258 17 Value -40 to 85 oC -55 to 125 oC 74HC 54HC Max. 18 ns 38 45 ns 27 34 41 20 30 38 45 ns RL = 1 KΩ 18 30 38 45 ns RL = 1 KΩ 16 30 38 45 ns 5 10 10 10 pF 10 HCT257 HCT258 34 33 Min. Max. 15 Min. Unit 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/4 (per Channel) 6/12 M54/M74HCT257/258 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. ICC ( opr) CPD = fIN × VCC INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF SWITCHING CHARACTERSISTICS TESt. 7/12 M54/M74HCT257/258 Plastic DIP16 (0.25) MECHANICAL DATA mm DIM. MIN. a1 0.51 B 0.77 TYP. inch MAX. MIN. TYP. MAX. 0.020 1.65 0.030 0.065 b 0.5 0.020 b1 0.25 0.010 D 20 0.787 E 8.5 0.335 e 2.54 0.100 e3 17.78 0.700 F 7.1 0.280 I 5.1 0.201 L Z 3.3 0.130 1.27 0.050 P001C 8/12 M54/M74HCT257/258 Ceramic DIP16/1 MECHANICAL DATA mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 20 0.787 B 7 0.276 D E 3.3 0.130 0.38 e3 0.015 17.78 0.700 F 2.29 2.79 0.090 0.110 G 0.4 0.55 0.016 0.022 H 1.17 1.52 0.046 0.060 L 0.22 0.31 0.009 0.012 M 0.51 1.27 0.020 0.050 N P Q 10.3 7.8 8.05 5.08 0.406 0.307 0.317 0.200 P053D 9/12 M54/M74HCT257/258 SO16 (Narrow) MECHANICAL DATA mm DIM. MIN. TYP. A a1 inch MAX. MIN. TYP. 1.75 0.1 0.068 0.2 a2 MAX. 0.004 0.007 1.65 0.064 b 0.35 0.46 0.013 0.018 b1 0.19 0.25 0.007 0.010 C 0.5 0.019 c1 45° (typ.) D 9.8 E 5.8 10 0.385 6.2 0.228 0.393 0.244 e 1.27 0.050 e3 8.89 0.350 F 3.8 4.0 0.149 0.157 G 4.6 5.3 0.181 0.208 L 0.5 1.27 0.019 0.050 M S 0.62 0.024 8° (max.) P013H 10/12 M54/M74HCT257/258 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/M74HCT257/258 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