DESCRIPTION

The M54/74HC590 is a high speed CMOS 8-BIT BINARY COUNTER REGISTER (3-STATE) fabricated in silicon gate C2MOS technology. It has the same high speed performance of LSTTL combined with true CMOS low power consumption.

■ HIGH SPEED fMAX = 62 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 (for RCO) 15 LSTTL LOADS (for QA ～ QH)

■ SYMMETRICAL OUTPUT IMPEDANCE |IOH| = |IOL| = 6 mA (MIN.)FORQA~ QHOUTPUT |IOH| = |IOL| = 4 mA (MIN.) FOR RCO OUTPUT

■ BALANCED PROPAGATION DELAYS tPLH = tPHL

■ WIDE OPERATING VOLTAGE RANGE VCC (OPR) = 2 V TO 6 V

■ PIN AND FUNCTION COMPATIBLE WITH 54/74LS590

M74HC590TTR屬于集成電路（IC） > 計數(shù)器，除法器。意法半導體（ST）集團制造生產(chǎn)的M74HC590TTR計數(shù)器，除法器計數(shù)器和除法器 IC 是數(shù)字邏輯器件，可對輸入發(fā)生的邏輯轉(zhuǎn)換進行計數(shù)，然后使用多個并行輸出重新發(fā)送累加的計數(shù)，和/或生成單個輸出信號轉(zhuǎn)換，從而對應用某些整數(shù)數(shù)量輸入信號轉(zhuǎn)換進行響應。除了簡單的事件計數(shù)，它們還可用于各種頻率合成應用。