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M74HC192RM13TR Arkusz danych(PDF) 1 Page - STMicroelectronics |
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M74HC192RM13TR Arkusz danych(HTML) 1 Page - STMicroelectronics |
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1 / 14 page  1/14 July 2001 s HIGH SPEED : fMAX = 55 MHz (TYP.) at VCC = 6V s LOW POWER DISSIPATION: ICC =4µA(MAX.) at TA=25°C s HIGH NOISE IMMUNITY: VNIH = VNIL = 28 % VCC (MIN.) s SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4mA (MIN) s BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL s WIDE OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V s PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 192 DESCRIPTION The M74HC192 is an high speed CMOS SYNCRONOUS UP/DOWN DECADE COUNTERS fabricated with silicon gate C2MOS technology. The counter has two separate clock inputs, an UP COUNT input and a DOWN COUNT input. All outputs of the flip-flop are simultaneously triggered on the low to high transition of either clock while the other input is held high. The direction of counting is determined by which input is clocked. This counter may be preset by entering the desired data on the DATA A, DATA B, DATA C, and DATA D input. When the LOAD input is taken low the data is loaded independently of either clock input. This feature allows the counters to be used as divide-by-n counters by modifying the count length with the preset inputs. In addition the counter can also be cleared. This is accomplished by inputting a high on the CLEAR input. All 4 internal stages are set to low independently of either COUNT input. Both a BORROW and CARRY output are provided to enable cascading of both up and down counting functions. The BORROW output produces a negative going pulse when the counter underflows and the CARRY outputs a pulse when the counters overflows. The counter can be cascaded by connection the CARRY and BORROW outputs of one device to the COUNT UP and COUNT DOWN inputs, respectively, of the next device. All inputs are equipped with protection circuits against static discharge and transient excess voltage. M74HC192 SYNCHRONOUS UP/DOWN DECADE COUNTER PIN CONNECTION AND IEC LOGIC SYMBOLS ORDER CODES PACKAGE TUBE T & R DIP M74HC192B1R SOP M74HC192M1R M74HC192RM13TR TSSOP M74HC192TTR TSSOP DIP SOP |
Podobny numer części - M74HC192RM13TR |
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Podobny opis - M74HC192RM13TR |
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