M54HC593

HIGH SPEED f_MAX = 80 MHz (TYP.) AT V_CC = 5 V
LOWPOWER DISSIPATION I_CC = 4 mA (MAX.) AT T_A = 25 °C
OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS FOR RCO 15 LSTTL LOADS FOR Qn
BALANCEDPROPAGATION DELAYS t_PLH = t_PHL
SYMMETRICAL OUTPUT IMPEDANCE 
    I_OL = I_OH = 6 mA (MIN.) for Qn
    I_OL = I_OH = 4 mA (MIN.) for RCO
HIGH NOISE IMMUNITY V_NIH = V_NIL = 28 % V_CC (MIN.)
WIDE OPERATING VOLTAGE RANGE V_CC (OPR) = 2 V TO 6 V
PIN AND FUNCTION COMPATIBLE WITH 54/74LS593

The M54/74HC593 is a high speed CMOS 8 BIT REGISTER COUNTER (3 STATE) fabricated with silicon gate C²MOS technology. It has the same high speed performance of LSTTL combined with true CMOS low power consumption.

The M54/74HC593 consists of a parallel input, 8 bit storage register feeding an 8bitbinary counter. Both the register and the counter have individual positive edge-triggered clock. Inaddition, the counter has direct load and clear functions.Expansion is easily accomplished by connecting RCO of first stage to the count enable CCKEN, of the second stage etc.

The M54/74HC593 comes in a 20 pin package and has 3 state I/O, which provides parallel counter outputs.

All inputs are equipped with protection circuits against static discharge and transient excess voltage.