TC74HC4020,4040AP/AF
2014-03-01
1
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74HC4020AP, TC74HC4020AF
TC74HC4040AP, TC74HC4040AF
TC74HC4020AP/AF 14-Stage Binary Counter
TC74HC4040AP/AF 12-Stage Binary Counter
The TC74HC4020A/TC74HC4040A are high speed CMOS
BINARY COUNTER/DIVIDERs fabricated with silicon gate
C
2
MOS technology.
They achieve the high speed operetion similar to equivalent
LSTTL while maintaining the CMOS dissipation.
The TC74HC4020A is a 14-STAGE BINARY COUNTER, and
the TC74HC4040A is a 12-STAGE BINARY COUNTER.
Setting CLR to high resets the counter to low.
A negative transition on the CK input brings one increment
into the counter.
The TC74HC4020A provides 12 divided outputs: 1’st stage and
stage 4 thru stage 14. At Q14, a 1/16384 divided frequency will
be output.
The TC74HC4040A provides all divided output stages, and at
Q12, a 1/4096 divided frequency will be output.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
Features
• High speed: f
max
= 73 MHz (typ.) at V
CC
= 5 V
• Low power dissipation: I
CC
= 4 μA (max) at Ta = 25°C
• High noise immunity: V
NIH
= V
NIL
= 28% V
CC
(min)
• Output drive capability: 10 LSTTL loads
• Symmetrical output impedance: |I
OH
| = I
OL
= 4 mA (min)
• Balanced propagation delays: t
pLH
∼
−
t
pHL
• Wide operating voltage range: V
CC
(opr) = 2 to 6 V
• Pin and function compatible with 4020B/4040B
TC74HC4020AP, TC74HC4040AP
TC74HC4020AF, TC74HC4040AF
Weight
DIP16-P-300-2.54A : 1.00 g (typ.)
SOP16-P-300-1.27A : 0.18 g (typ.)
Start of commercial production
1988-05
