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M74HCT161B1R Arkusz danych(PDF) 1 Page - STMicroelectronics |
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M74HCT161B1R Arkusz danych(HTML) 1 Page - STMicroelectronics |
1 / 16 page M54/74HCT160/161 M54/74HCT162/163 October 1993 SYNCHRONOUS PRESETTABLE 4-BIT COUNTER B1R (Plastic Package) ORDER CODES : M54HCTXXXF1R M74HCTXXXM1R M74HCTXXXB1R M74HCTXXXC1R F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) PIN CONNECTIONS (top view) NC = No Inter- nal Con- DESCRIPTION . HIGH SPEED fMAX = 50 MHz (TYP.) AT VCC =5 V . LOW POWER DISSIPATION ICC =4 µA (MAX.) AT 25 °C . OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS . BALANCED PROPAGATION DELAYS tPLH =tPHL . SYMMETRICAL OUTPUT IMPEDANCE IOH =IOL = 4 mA (MIN.) . COMPATIBLE WITH TTL OUTPUTS VIH = 2V (MIN.); VIL = 0.8V (MAX.) . PIN AND FUNCTION COMPATIBLE WITH 54/74LS160 ∼ 163 M54/74HCT160 Decade, Asynchronous Clear M54/74HCT161 Binary, Asynchronous Clear M54/74HCT162 Decade, Synchronous Clear M54/74HCT163 Binary, Synchronous Clear The M54/74HCT160, 161, 162 and 163 are high speed CMOS SYNCHRONOUS PRESETTABLE COUNTERS fabricated with silicon gate C 2MOS technology. They have the same high speed oper- ation similar to equivalent LSTTL while maintaining the CMOS low power dissipation. The M54/74HCT160/162 are BCD Decade counter- s and the M54/74HCT161/163 are 4 bit binary counters. The CLOCK input is active on the rising edge. Both LOAD and CLEAR inputs are active Low. Presetting of all four IC’s is synchronous on the ris- ing edge of the CLOCK. The function on the M54/74HCT162/163 is synchronous to CLOCK, while the M54/74HCT160/161 counters are cleared asynchronously. Two enable inputs (TE and PE) and CARRY output are provided to enable easy cas- cading of counters, which facilities easy implemen- tation of N-bit counters without using external gates. This integrated circuit has input and output charac- teristics that are fully compatible with 54/74 LSTTL logic families. M54/74HCT devices are designed to directly interface HSC 2MOS systems with TTL and NMOS components. They are also plug in replace- ments for LSTTL devices giving a reduction of power consumption. All inputs are equipped with 1/16 |
Podobny numer części - M74HCT161B1R |
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Podobny opis - M74HCT161B1R |
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