MC74AC4040 Datasheet PDF - Motorola


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MC74AC4040
Motorola

Part Number MC74AC4040
Description 12-STAGE BINARY RIPPLE COUNTER
Page 5 Pages

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MC74AC4040
12ĆStage Binary Ripple Counter
The MC74AC4040 consists of 12 master-slave flip-flops. 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 MC74AC4040 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 Q11 Q10 Q8 Q9 RESET CLK Q1
16 15 14 13 12 11 10 9
12-STAGE
BINARY RIPPLE
COUNTER
N SUFFIX
CASE 648-08
PLASTIC
12345678
Q12 Q6 Q5 Q7 Q4 Q3 Q2 GND
FUNCTION TABLE
Clock Reset
L
L
XH
Output State
No Change
Advance to next state
All Outputs are low
D SUFFIX
CASE 751B-05
PLASTIC
LOGIC DIAGRAM
10
CLOCK
11
RESET
PIN 16 = VCC
PIN 8 = GND
9
Q1
7
Q2
6
Q3
5
Q4
3
Q5
2
Q6
4
Q7
13
Q8
12
Q9
14
Q10
15
Q11
1
Q12
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MC74AC4040
MAXIMUM RATINGS*
Symbol
Parameter
VCC
Vin
DC Supply Voltage (Referenced to GND)
DC Input Voltage (Referenced to GND)
Vout
Iin
Iout
ICC
PD
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**
Tstg Storage Temperature
TL Lead Temperature, 1 mm from Case for 10 seconds
(Plastic DIP or SOIC Package)
* Maximum Ratings are those values beyond which damage to the device may occur.
** Derating: Plastic DIP: – 10mW/°C from 65°C to 125°C
SOIC Package: –7.0 mW/°C from 65°C to 125°C
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
VCC
DC Supply Voltage (Referenced to GND)
Vin/Vout
TA
Input Voltage, Output Voltage (Ref. to GND)
Operating Temperature, All Package Types
tr/tf
Input Rise/Fall Time
VCC = 3.0 V
(Figure 1)
VCC = 4.5 V
VCC = 5.5 V
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
Unit
V
V
V
mA
mA
mA
mW
°C
°C
Min Max Unit
2.0 6.0
V
0 VCC
–40 +85
°C
0 150 ns/V
0 40
0 25
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MC74AC4040
DC CHARACTERISTICS (unless otherwise specified)
Symbol
Parameter
Value
ICC Maximum Quiescent Supply Voltage
80
ICC Maximum Quiescent Supply Current
8.0
Unit
Vin = VCC or GND
µA VCC = 5.5 V,
TA = Worst Case
Vin = VCC or GND
µA VCC = 5.5 V,
TA = 25°C
DC CHARACTERISTICS
74AC
74AC
Symbol
Parameter
VCC
(V)
TA = +25°C
TA =
–40°C to +85°C
Unit
Conditions
Typ Guaranteed Limits
VIH Minimum High Level
Input Voltage
3.0 2.1 2.1
VOUT = 0.1 V
4.5
3.15 3.15
V or VCC – 0.1 V
5.5 3.85 3.85
VIL
VOH
Maximum Low Level
Input Voltage
Minimum High Level
Output Voltage
VOL
Maximum Low Level
Output Voltage
3.0 0.9
4.5 1.35
5.5 1.65
3.0 2.99 2.9
4.5 4.49 4.4
5.5 5.49 5.4
3.0 2.56
4.5 3.86
5.5 4.86
3.0 0.002 0.1
4.5 0.001 0.1
5.5 0.001 0.1
0.9
1.35
1.65
2.9
4.4
5.4
2.46
3.76
4.76
0.1
0.1
0.1
VOUT = 0.1 V
V or VCC – 0.1 V
IOUT = –50 µA
V
*VIN = VIL or VIH
V –12 mA
IOH –24 mA
–24 mA
IOUT = 50 µA
V
*VIN = VIL or VIH
3.0
0.36 0.44
V
12 mA
4.5 0.36 0.44
IOL 24 mA
5.5 0.36 0.44
24 mA
IIN Maximum Input
Leakage Current
5.5
±0.1 ±1.0
µA VI = VCC, GND
IOLD
IOHD
Minimum Dynamic
Output Current**
5.5
5.5
* All outputs loaded; thresholds on input associated with output under test.
** Maximum test duration 2.0 ms, one output loaded at a time.
75 mA VOLD = 1.65 V Max
–75 mA VOHD = 3.85 V Min
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MC74AC4040
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
74AC
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
fmax
Maximum Clock
Frequency
nCP to Q1
Qn to Qn +1
MR to Q
tHL
Propagation Delay
nCP to Q1
Propagation Delay
Qn to Qn +1
Propagation Delay
MR to Q
trec
nCP to MR
Recovery Time
tw nCP
Minimum Pulse Width
Clock Pin
tw MR
Minimum Pulse Width
Master Reset
* Voltage Range 3.3 V is 3.3 V ±0.3 V.
Voltage Range 5.0 V is 5.0 V ±0.5 V.
Min Typ Max
3.3 110 120
5.0 130 140
3.3 2.0
5.0 2.0
11
8.0
3.3 0
5.0 0
3.3 3.0
5.0 3.0
5.5
3.5
12
10
3.3 0 –2.5
5.0 0 –1.5
3.3 4.0 3.5
5.0 3.0 2.5
3.3 4.0 3.5
3.0 3.0 2.5
74AC
TA = –40°C
to +85°C
CL = 50 pF
Min Max
100
120
2.0 14
2.0 10
0 6.5
0 4.5
3.0 15
3.0 12
0
0
4.5
3.5
4.5
3.5
Unit
MHz
ns
ns
ns
ns
ns
ns
Fig.
No.
CAPACITANCE
Symbol
Parameter
CIN
CPD
Input Capacitance
Power Dissipation Capacitance
Value
Typ
4.5
50
Unit
pF
pF
Test Conditions
VCC = 5.0 V
VCC = 5.0 V
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