Document
TC74HC4020,4040AP/AF
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74HC4020AP, TC74HC4020AF TC74HC4040AP, TC74HC4040AF
TC74HC4020AP/AF TC74HC4040AP/AF
14-Stage Binary Counter 12-Stage Binary Counter
The TC74HC4020A/TC74HC4040A are high speed CMOS BINARY COUNTER/DIVIDERs fabricated with silicon gate C2MOS 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: fmax = 73 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 to 6 V • Pin and function compatible with 4020B/4040B
TC74HC4020AP, TC74HC4040AP TC74HC4020AF, TC74HC4040AF
Weight DIP16-P-300-2.54A SOP16-P-300-1.27A
: 1.00 g (typ.) : 0.18 g (typ.)
Start of commercial production
1988-05
1
2014-03-01
Pin Assignment
TC74HC4020A
TC74HC4020,4040AP/AF
TC74HC4040A
IEC Logic Symbol
TC74HC4020A
TC74HC4040A
Truth Table
CK CLR
Output State
X
H
L
L
All Output = “L” No Change
Adovance to Next State
X: Don’t care
2
2014-03-01
System Diagram
TC74HC4020A
TC74HC4020,4040AP/AF
TC74HC4040A
3
2014-03-01
TC74HC4020,4040AP/AF
Absolute Maximum Ratings (Note 1)
Characteristics
Symbol
Rating
Unit
Supply voltage range DC input voltage DC output voltage Input diode current Output diode current DC output current DC VCC/ground current Power dissipation Storage temperature
VCC VIN VOUT IIK IOK IOUT ICC PD Tstg
−0.5 to 7
V
−0.5 to VCC + 0.5
V
−0.5 to VCC + 0.5
V
±20
mA
±20
mA
±25
mA
±50
mA
500 (DIP) (Note 2)/180 (SOP)
mW
−65 to 150
°C
Note 1:
Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or even destruction. Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum ratings and the operating ranges. Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook (“Handling Precautions”/“Derating Co.