HC4020 14 STAGE BINARY COUNTER
HC4040 12 STAGE BINARY COUNTER
. HIGH SPEED
fMAX = 73 MHz (TYP.) at VCC = 5 V
. LOW POWER DISSIPATION
ICC = 4 µA (MAX.) at TA = 25 oC
. 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 COMPATIBLE WITH
ORDER CODES :
The M54/74HC4020/HC4040 are high speed
CMOS 14/12-STAGE BINARY COUNTER
fabricated in silicon gate C2MOS technology. They
have the same high speed performance of LSTTL
combined with true CMOS low consumption.
A clear input is used to reset the counter to the all
low level state. A high level on CLEAR accomplishes
the reset function. A negative transition on the
CLOCK input increments the counter by one.
The maximum division available at last stage is
1/16384 x fIN at clock.
For HC4040 each division stage has an output; the
final frequency is 1/4096 x fIN.
All inputs are equipped with protection circuits
against static discharge and transient excess
For HC4020 twelve kind od divided output are
provided; 1st and 4th stage to 14th stage.
PIN CONNECTION (top view)