器件名称:
M74HC4040F1R
功能描述:
HC4020 14 STAGE BINARY COUNTER HC4040 12 STAGE BINARY COUNTER
文件大小:
265.92KB 共13页
简 介:
M54/74HC4020 M54/74HC4040 HC4020 14 STAGE BINARY COUNTER HC4040 12 STAGE BINARY COUNTER . . . . . . . . HIGH SPEED fMAX = 73 MHz (TYP.) at VCC = 5 V LOW POWER DISSIPATION o 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 4020B/4040B B1R (Plastic Package) F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) ORDER CODES : M54HCXXXF1R M74HCXXXM1R M74HCXXXB1R M74HCXXXC1R DESCRIPTION The M54/74HC4020/HC4040 are high speed CMOS 14/12-STAGE BINARY COUNTER fabricated in silicon gate C2MOS technology. They have the same high speed performance of LSTTL combined with true CMOS low consumption. A clear input is used to reset the counter to the all low level state. A high level on CLEAR accomplishes the reset function. A negative transition on the CLOCK input increments the counter by one. For HC4020 twelve kind od divided output are provided; 1st and 4th stage to 14th stage. PIN CONNECTION (top view) HC4020 HC4040 HC4020 HC4040 The maximum division available at last stage is 1/16384 x fIN at clock. For HC4040 each division stage has an output; the final frequency is 1/4096 x fIN. All inputs are equipped with protection circuits against static discharge and transient excess voltage. March 1993 1/13 M54/M74HC4020/4040 INPU……
