器件名称:
M74HC42B1R
功能描述:
BCD TO DECIMAL DECODER
文件大小:
246.59KB 共10页
简 介:
M54HC42 M74HC42 BCD TO DECIMAL DECODER . . . . . . . . HIGH SPEED tPD = 13 ns (TYP.) AT VCC = 5 V LOW POWER DISSIPATION ICC = 4 A (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 B1R (Plastic Package) F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) ORDER CODES : M54HC42F1R M74HC42M1R M74HC42B1R M74HC42C1R DESCRIPTION The M54/74HC42 is a high speed CMOS BCD-TODECIMAL DECODER fabricated in silicon gate C2MOS 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 device is useful for code conversion, address decoding, memory selection, demultiplexing, or readout decoding. All inputs are equipped with protection circuits against static discharge and transient excess voltage. INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN CONNECTIONS (top view) NC = No Internal Connection December 1992 1/10 M54/M74HC42 PIN DESCRIPTION PIN No 15, 14, 13, 12 1, 2, 3, 4, 5, 6, 7, 9, 10, 11 8 16 SYMBOL A, B, C, D Y0 to Y9 NAME AND FUNC……
