Datasheet Summary
M54/M74HC190 M54/M74HC191
4 BIT SYNCHRONOUS UP/DOWN COUNTERS
. HIGH SPEED fMAX = 48 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
. SYMMETRICAL OUTPUT IMPEDANCE IOH = IOL = 4 mA (MIN.)
. BALANCED PROPAGATION DELAYS tPLH = tPHL
. WIDE OPERATING VOLTAGE RANGE VCC (OPR) = 2 V TO 6 V
. PIN AND FUNCTION PATIBLE WITH 54/74LS190/191
B1R (Plastic Package)
F1R (Ceramic Package)
M 1R (Micro Package)
C1R (Chip Carrier)
ORDER CODES : M54HCXXXF1R M74HCXXXM1R M74HCXXXB1R M74HCXXXC1R
PIN CONNECTIONS (top view)
DESCRIPTION
The M54/74HC190/191 are high speed CMOS...
