器件名称: M74HC4028
功能描述: BCD TO DECIMAL DECODER
文件大小: 283.84KB 共9页
简 介:M74HC4028
BCD TO DECIMAL DECODER
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HIGH SPEED: tPD = 20ns (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 4028
DIP
SOP
TSSOP
ORDER CODES
PACKAGE DIP SOP TSSOP TUBE M74HC4028B1R M74HC4028M1R T&R M74HC4028RM13TR M74HC4028TTR
DESCRIPTION The M74HC4028 is an high speed CMOS BCD TO DECIMAL DECODER fabricated with silicon gate C2MOS technology. A BCD code applied to the four inputs (A to D) provides a high level at the selected one of the decimal decoded outputs. An illegal BCD code such as eleven to fifteen gives a low level at all outputs. The device also can be used as 3 TO 8
LINE DECODER, when D input is assigned as a disable input. The device is useful for code conversion, address decoding, memory selection, demultiplexing, or read out decoding. All inputs are equipped with protection circuits against static discharge and transient excess voltage.
PIN CONNECTION AND IEC LOGIC SYMBOLS
August 2001
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M74HC4028
INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
PIN No 1, 2, 3, 4, 5, 6, 7, 9, 14, 15 10, 11, 12, 13 8 16 SYMBOL Y0 to Y9 NAME AND FUNCTION Decoder Outputs
A to D GND VCC
Data Inputs Ground (0V) Positive Supply Voltage
TRUTH TABLE
INPUTS D L L L L L L L L H H H H C L L L L H H H H……
