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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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M54HC423AB1R датащи(PDF) 1 Page - STMicroelectronics |
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M54HC423AB1R датащи(HTML) 1 Page - STMicroelectronics |
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1 / 14 page  M54HC423/423A M74HC423/423A October 1993 DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR B1R (Plastic Package) ORDER CODES : M54HCXXXF1R M74HCXXXM1R M74HCXXXB1R M74HCXXXC1R F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) PIN CONNECTIONS (top view) NC = No Internal Connection . HIGH SPEED tPD = 25 ns (TYP) at VCC =5V . LOW POWER DISSIPATION STANDBY STATE ICC=4 µA (MAX.) AT TA=25°C ACTIVE STATE ICC = 700 µA (MAX.)AT VCC=5V . 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 . WIDE OUTPUT PULSE WIDTH RANGE tWOUT = 120 ns ∼ 60 s OVER AT VCC = 4.5 V . PIN AND FUNCTION COMPATIBLE WITH 54/74LS423 The M54/74HC423/423A are high speed CMOS MONOSTABLE multivibrators fabricated with silicon gate C 2MOS technology. They achieve the high speed operation similar to equivalent LSTTL while maintaining the CMOS low power dissipation. There are two trigger inputs, A INPUT (negative edge) and B INPUT (positive edge). These inputs are valid for rising/falling signals, (tr –tf – 1 sec). After triggering the output maintains the MONOSTABLE state for the time period determined by the external resistor Rx and capacitor Cx. Two different pulse width constant are available: K ≅ 0.46 for HC423 K ≅ 1 for HC423A. Taking CLR low breaks this MONOSTABLE STATE. If the next trigger pulse occurs during the MONOSTABLEperiod it makes the MONOSTABLE period longer. Limit for values of Cx and Rx : Cx : NO LIMIT Rx : VCC < 3.0 V 5 K Ω to 1 M Ω VCC ≥ 3.0 V 1 K Ω to 1 M Ω All inputs are equipped with protection circuits against static discharge and transient excess voltage. DESCRIPTION 1/14 |
Аналогичный номер детали - M54HC423AB1R |
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Аналогичное описание - M54HC423AB1R |
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