器件名称:
M74HC42M1R
功能描述:
BCD TO DECIMAL DECODER
文件大小:
308.14KB 共9页
简 介:
M74HC42 BCD TO DECIMAL DECODER s s s s s s s HIGH SPEED : tPD = 14ns (TYP.) at VCC = 6V LOW POWER DISSIPATION: ICC =4A(MAX.) at TA=25°C HIGH NOISE IMMUNITY: VNIH = V NIL = 28 % VCC (MIN.) SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4mA (MIN) BALANCED PROPAGATION DELAYS: tPLH tPHL WIDE OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 42 DIP SOP TSSOP ORDER CODES PACKAGE DIP SOP TSSOP TUBE M74HC42B1R M74HC42M1R T&R M74HC42RM13TR M74HC42TTR DESCRIPTION The M74HC42 is an high speed CMOS BCD TO DECIMAL DECODER fabricated with silicon gate C2MOS technology. 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 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. PIN CONNECTION AND IEC LOGIC SYMBOLS July 2001 1/9 M74HC42 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No 15, 14, 13, 12 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 8 16 SYMBOL A, B, C, D Y0 TO Y9 GND Vcc NAME AND FUNCTION Data Inputs Multiplexer Outputs Ground (0V) Positive Supply Voltage FUNCTIONAL TABLE BCD INPUTS CODE No D 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 L L L L L L L L H H H H H H H H C L L L L H ……
