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M74HC42C1R Folha de dados(PDF) 1 Page - STMicroelectronics |
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M74HC42C1R Folha de dados(HTML) 1 Page - STMicroelectronics |
1 / 10 page M54HC42 M74HC42 December 1992 BCD TO DECIMAL DECODER B1R (Plastic Package) ORDER CODES : M54HC42F1R M74HC42M1R M74HC42B1R M74HC42C1R F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) PIN CONNECTIONS (top view) NC = No Internal Connection INPUT AND OUTPUT EQUIVALENT CIRCUIT DESCRIPTION . HIGH SPEED tPD = 13 ns (TYP.) AT VCC =5 V . LOW POWER DISSIPATION ICC =4 µA (MAX.) AT TA =25 °C . HIGH NOISE IMMUNITY VNIH =VNIL =28 % VCC (MIN.) . OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS . SYMMETRICAL OUTPUT IMPEDANCE |IOH|= IOL = 4 mA (MIN.) . BALANCED PROPAGATION DELAYS tPLH =tPHL . WIDE OPERATING VOLTAGE RANGE VCC (OPR) = 2 V TO 6 V . PIN AND FUNCTION COMPATIBLE WITH 54/74LS42 The M54/74HC42 is a high speed CMOS BCD-TO- DECIMAL DECODER fabricated in silicon gate C 2MOS technology. It has the same high speed performance of LSTTL combined with true CMOS low power consumption. A BCD code applied to the four inputs A-D selects one of ten decimal outputs Y0-Y9, which goes low to fifteen gives a high level at all outputs. This device also can be used as a 3-to-8 LINE DECODER, when the D input is assigned as a disable input. This de- vice is useful for code conversion, address decod- ing, memory selection, demultiplexing, or readout decoding. All inputs are equipped with protection circuits against static discharge and transient excess voltage. 1/10 |
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