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M74HC273

ST Microelectronics
Part Number M74HC273
Manufacturer ST Microelectronics
Description OCTAL D-TYPE FLIP-FLOP
Published May 6, 2005
Detailed Description M54HC273 M74HC273 OCTAL D TYPE FLIP FLOP WITH CLEAR . . . . . . . . HIGH SPEED fMAX = 67 MHz (TYP.) AT VCC = 5 V LOW P...
Datasheet PDF File M74HC273 PDF File

M74HC273
M74HC273

Overview
M54HC273 M74HC273 OCTAL D TYPE FLIP FLOP WITH CLEAR .
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HIGH SPEED fMAX = 67 MHz (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 54/74LS273 B1R (Plastic Package) F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) ORDER CODES : M54HC273F1R M74HC273M1R M74HC273B1R M74HC273C1R DESCRIPTION The M54/74HC273 is a high speed CMOS OCTAL D-TYPE FLIP FLOP WITH CLEAR fabricated in silicon gate C2MOS technology.
It has the same high speed performance of LSTTL combined with true CMOS low power consumption.
Information signals applied to D inputs are transferred to the Q outputs on the positive-going edge of the clock pulse.
When the CLEAR input is held low, the Q output are in the low logic level independent of the other inputs.
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 October 1992 1/11 M54/M74HC273 PIN DESCRIPTION PIN No 1 2, 5, 6, 9, 12, 15, 16, 19 3, 4, 7, 8, 13, 14, 17, 18 11 10 20 SYMBOL CLEAR Q0 to Q7 NAME AND FUNCTION Master Reset Input (Active LOW) Flip Flop Outputs IEC LOGIC SYMBOL D0 to D7 Data Inputs CLOCK GND V CC Clock Input (LOW to HIGH, Edge Triggered) Ground (0V) Positive Supply Voltage TRUTH TABLE CLEAR L H H H X: Don’t Care INPUTS CLOCK X D X L H X OUTPUS Q L L H Qn FUNCTION CLEAR NO CHANGE LOGIC DIAGRAM 2/11 M54/M74HC273 ABSOLUTE MAXIMUM RATINGS Symbol VCC VI VO IIK IOK IO ICC or IGND PD Tstg TL Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Source Sink Current Per Output Pin DC VCC or Ground Current Power Dissipat...


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