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MC74AC4020 14 Stage Binary Ripple Counter
The MC74AC4020 consists of 14 master-slave flip-flops with 12 stages brought out to pins. The output of each flip-flop feeds the next and the frequency at each output is half that of the preceding one. The state of the counter advances on the negative-going edge of the Clock input. Reset is asynchronous and active-high. State changes of the Q outputs do not occur simultaneously because of internal ripple delays. Therefore, decoded output signals are subject to decoding spikes and may have to be gated with the Clock of the MC74AC4020 for some designs. * * * * 140 MHz Typ. Clock Outputs Source/Sink 24 mA Operating Voltage Range: 2.0 to 6.0 V High Noise Immunity
VCC 16 Q11 15 Q10 14 Q8 13 Q9 12 RESET CLK 11 10 Q1 9
14-STAGE BINARY RIPPLE COUNTER
N SUFFIX CASE 648-08 PLASTIC
1 Q12
2 Q13
3 Q14
4 Q6
5 Q5
6 Q7
7 Q4
8 GND
D SUFFIX CASE 751B-05 PLASTIC
FUNCTION TABLE
Clock Reset L L X H Output State No Change Advance to next state All Outputs are low CLOCK
LOGIC DIAGRAM
9 7 5 4 10 6 13 12 14 15 1 2 3 11 Q1 Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q11 Q12 Q13 Q14
RESET
PIN 16 = VCC PIN 8 = GND
FACT DATA 5-1
MC74AC4020
MAXIMUM RATINGS*
Symbol VCC Vin Vout Iin Iout ICC PD Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage (Referenced to GND) DC Output Voltage (Referenced to GND) DC Input Current, per Pin DC Output Current, per Pin DC VCC or GND Current per Output Pin Power Dissipation in Still Air Plastic** SOIC Package** Storage Temperature Lead Temperature, 1 mm from Case for 10 seconds (Plastic DIP or SOIC Package) Value -0.5 to +7.0 -0.5 to VCC +0.5 -0.5 to VCC +0.5 20 50 50 750 500 -65 to +150 260 C C Unit V V V mA mA mA mW
Tstg TL
* Maximum Ratings are those values beyond which damage to the device may occur. ** Derating: Plastic DIP: - 10mW/C from 65C to 125C SOIC Package: -7.0 mW/C from 65C to 125C
RECOMMENDED OPERATING CONDITIONS
Symbol VCC Vin/Vout TA tr/tf Parameter DC Supply Voltage (Referenced to GND) Input Voltage, Output Voltage (Ref. to GND) Operating Temperature, All Package Types Input Rise/Fall Time (Figure 1) VCC = 3.0 V VCC = 4.5 V VCC = 5.5 V Min 2.0 0 -40 0 0 0 Max 6.0 VCC +85 150 40 25 C ns/V Unit V
FACT DATA 5-2
MC74AC4020
DC CHARACTERISTICS (unless otherwise specified)
Symbol ICC Parameter Maximum Quiescent Supply Voltage Value 80 Unit A Vin = VCC or GND VCC = 5.5 V, TA = Worst Case Vin = VCC or GND VCC = 5.5 V, TA = 25C
ICC
Maximum Quiescent Supply Current
8.0
A
DC CHARACTERISTICS
74AC Symbol Parameter VCC (V) TA = +25C Typ VIH Minimum High Level Input Voltage 3.0 4.5 5.5 3.0 4.5 5.5 3.0 4.5 5.5 3.0 4.5 5.5 VOL Maximum Low Level Output Voltage 3.0 4.5 5.5 3.0 4.5 5.5 IIN IOLD IOHD Maximum Input Leakage Current Minimum Dynamic Output Current** 5.5 5.5 5.5 0.002 0.001 0.001 2.99 4.49 5.49 74AC TA = -40C to +85C Unit Conditions
Guaranteed Limits 2.1 3.15 3.85 0.9 1.35 1.65 2.9 4.4 5.4 2.56 3.86 4.86 0.1 0.1 0.1 0.36 0.36 0.36 0.1 2.1 3.15 3.85 0.9 1.35 1.65 2.9 4.4 5.4 2.46 3.76 4.76 0.1 0.1 0.1 0.44 0.44 0.44 1.0 75 -75 V VOUT = 0.1 V or VCC - 0.1 V VOUT = 0.1 V or VCC - 0.1 V IOUT = -50 A V *VIN = VIL or VIH -12 mA IOH -24 mA -24 mA IOUT = 50 A V *VIN = VIL or VIH 12 mA IOL 24 mA 24 mA VI = VCC, GND VOLD = 1.65 V Max VOHD = 3.85 V Min
VIL
Maximum Low Level Input Voltage
V
VOH
Minimum High Level Output Voltage
V
V
A mA mA
* All outputs loaded; thresholds on input associated with output under test. ** Maximum test duration 2.0 ms, one output loaded at a time.
FACT DATA 5-3
MC74AC4020
AC CHARACTERISTICS (For Figures and Waveforms -- See Section 3)
74AC Symbol Parameter VCC* (V) Min fmax tPLH tPHL tPLH tPHL tPHL tPHL tPHL trec MR to CP tw CP tw MR Maximum Clock Frequency Propagation Delay CP to Q1 Propagation Delay CP to Q1 Propagation Delay CP to Q4 Propagation Delay CP to Q4 Propagation Delay Reset to any Q Propagation Delay On to Qn +1 Propagation Delay On to Qn +1 Recovery Time Minimum Pulse Width Clock Pin Minimum Pulse Width Master Reset 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 110 130 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 3.0 3.0 0 0 0 0 0 0 4.0 3.0 4.0 3.0 -2.5 -1.5 3.5 2.5 3.5 2.5 TA = +25C CL = 50 pF Typ 0 140 11 8.0 11 8.0 18 13 18 13 12 10 5.5 3.5 5.5 3.5 Max 74AC TA = -40C to +85C CL = 50 pF Min 100 120 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 3.0 3.0 0 0 0 0 0 0 4.5 3.5 4.5 3.5 14 10 14 10 21 16 21 16 15 12 6.5 4.5 6.5 4.5 Max MHz ns ns ns ns ns ns ns ns ns ns Unit Fig. No.
* Voltage Range 3.3 V is 3.3 V 0.3 V. Voltage Range 5.0 V is 5.0 V 0.5 V.
CAPACITANCE
Symbol CIN CPD Input Capacitance Power Dissipation Capacitance Parameter Value Typ 4.5 50 Unit pF pF Test Conditions VCC = 5.0 V VCC = 5.0 V
FACT DATA 5-4
MC74AC4020
OUTLINE DIMENSIONS
N SUFFIX PLASTIC DIP PACKAGE CASE 648-08 ISSUE R
9
-A-
16
B
1 8
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. 5. ROUNDED CORNERS OPTIONAL. DIM A B C D F G H J K L M S INCHES MIN MAX 0.740 0.770 0.250 0.270 0.145 0.175 0.015 0.021 0.040 0.70 0.100 BSC 0.050 BSC 0.008 0.015 0.110 0.130 0.295 0.305 0_ 10 _ 0.020 0.040 MILLIMETERS MIN MAX 18.80 19.55 6.35 6.85 3.69 4.44 0.39 0.53 1.02 1.77 2.54 BSC 1.27 BSC 0.21 0.38 2.80 3.30 7.50 7.74 0_ 10 _ 0.51 1.01
F S
C
L
-T- H G D
16 PL
SEATING PLANE
K
J TA
M
M
0.25 (0.010)
M
-A-
D SUFFIX PLASTIC SOIC PACKAGE CASE 751B-05 ISSUE J
9
16
-B-
1 8
P
8 PL
0.25 (0.010)
M
B
S
G F
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. MILLIMETERS MIN MAX 9.80 10.00 3.80 4.00 1.35 1.75 0.35 0.49 0.40 1.25 1.27 BSC 0.19 0.25 0.10 0.25 0_ 7_ 5.80 6.20 0.25 0.50 INCHES MIN MAX 0.386 0.393 0.150 0.157 0.054 0.068 0.014 0.019 0.016 0.049 0.050 BSC 0.008 0.009 0.004 0.009 0_ 7_ 0.229 0.244 0.010 0.019
K C -T-
SEATING PLANE
R
X 45 _
M D
16 PL M
J
0.25 (0.010)
TB
S
A
S
DIM A B C D F G J K M P R
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JAPAN: Nippon Motorola Ltd.; Tatsumi-SPD-JLDC, Toshikatsu Otsuki, 6F Seibu-Butsuryu-Center, 3-14-2 Tatsumi Koto-Ku, Tokyo 135, Japan. 03-3521-8315 HONG KONG: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852-26629298
FACT DATA 5-5
*MC74AC4020/D*
MC74AC4020/D

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