BCD TO DECIMAL DECODER
M74HC42
BCD TO DECIMAL DECODER
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HIGH SPEED : tPD = 14ns (TYP.) at VCC = 6V LOW POWER DISSIPATION: IC...
Description
M74HC42
BCD TO DECIMAL DECODER
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HIGH SPEED : tPD = 14ns (TYP.) at VCC = 6V LOW POWER DISSIPATION: ICC =4µA(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...
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