MOTOROLA CMOS LOGIC DATAMC14024B
100
" #"
The MC14024B is a 7–stage ripple counter with short propagation delays
and high m aximum c lock rates. T he Reset input has standard n oise
immunity, however the Clock input has increased noise immunity due to
Hysteresis. The output of each counter stage is buffered.
• Diode Protection on All Inputs
• Output Transitions Occur on the Falling Edge of the Clock Pulse
• Supply Voltage Range = 3.0 Vdc to 18 Vdc
• Capable of Driving Two Low–power TTL Loads or One Low–power
Schottky TTL Load Over the Rated Temperature Range
• Pin–for–Pin Replacement for CD4024B
MAXIMUM RATINGS* (Voltages Referenced to V
SS
)
Input or Output Voltage (DC or Transient)
Input or Output Current (DC or Transient),
per Pin
Power Dissipation, per Package†
Lead Temperature (8–Second Soldering)
_
C
*Maximum Ratings are those values beyond which damage to the device may occur.
†Temperature Derating:
Plastic “P and D/DW” Packages: – 7.0 mW/_C From 65_C To 125_C
Ceramic “L” Packages: – 12 mW/_C From 100_C To 125_C
LOGIC DIAGRAM
CLOCK
RESET
2
1
12
Q1
11
Q2
4
Q6
3
Q7
Q3 = PIN 9
Q4 = PIN 6
Q5 = PIN 5
C Q
R Q
C Q
R Q
C Q
R Q
C Q
R Q
SEMICONDUCTOR TECHNICAL DATA
Motorola, Inc. 1995
REV 3
1/94
!
!
L SUFFIX
CERAMIC
CASE 632
ORDERING INFORMATION
MC14XXXBCP Plastic
MC14XXXBCL Ceramic
MC14XXXBD SOIC
TA = – 55° to 125°C for all packages.
P SUFFIX
PLASTIC
CASE 646
D SUFFIX
SOIC
CASE 751A
11
12
13
14
8
9
105
4
3
2
1
7
6
NC
Q2
Q1
NC
V
DD
NC
Q3
Q6
Q7
RESET
CLOCK
V
SS
Q4
Q5
PIN ASSIGNMENT
VDD = PIN 14
VSS = PIN 7
NC = NO CONNECTION
MOTOROLA CMOS LOGIC DATA
101
MC14024B
ELECTRICAL CHARACTERISTICS (Voltages Referenced to V
SS
)
“0” Level
(VO = 4.5 or 0.5 Vdc)
(VO = 9.0 or 1.0 Vdc)
(VO = 13.5 or 1.5 Vdc)
“1” Level
(VO = 1.0 or 9.0 Vdc)
(VO = 1.5 or 13.5 Vdc)
Output Drive Current
(VOH = 2.5 Vdc) Source
(VOH = 4.6 Vdc)
(VOH = 9.5 Vdc)
(VOH = 13.5 Vdc)
– 4.2
– 0.88
– 2.25
– 8.8
(VOL = 0.4 Vdc) Sink
(VOL = 0.5 Vdc)
(VOL = 1.5 Vdc)
Input Capacitance
(Vin = 0)
Quiescent Current
(Per Package)
Total Supply Current**†
(Dynamic plus Quiescent,
Per Package)
(CL = 50 pF on all outputs, all
buffers switching)
IT = (0.31 µA/kHz) f + I
DD
IT = (0.60 µA/kHz) f + I
DD
IT = (1.89 µA/kHz) f + I
DD
µAdc
#Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance.
**The formulas given are for the typical characteristics only at 25_C.
†To calculate total supply current at loads other than 50 pF:
IT(CL) = IT(50 pF) + (CL – 50) Vfk
where: IT is in µA (per package), CL in pF, V = (VDD – VSS) in volts, f in kHz is input frequency, and k = 0.001.
This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However,
precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high-impedance
circuit. For proper operation, Vin and V
out
should be constrained to the range VSS ≤ (Vin or V
out
) ≤ VDD.
Unused inputs must always be tied to an appropriate logic voltage level (e.g., either VSS or VDD). Unused outputs must
be left open.
MOTOROLA CMOS LOGIC DATAMC14024B
102
SWITCHING CHARACTERISTICS* (C
L
= 50 pF, TA = 25_C)
Output Rise and Fall Time
t
TLH
, t
THL
= (1.5 ns/pF) CL + 25 ns
t
TLH
, t
THL
= (0.75 ns/pF) CL + 12.5 ns
t
TLH
, t
THL
= (0.55 ns/pF) CL + 9.5 ns
Propagation Delay Time
Clock to Q1
t
PLH
, t
PHL
= (1.7 ns/pF) CL + 295 ns
t
PLH
, t
PHL
= (0.66 ns/pF) CL + 117 ns
t
PLH
, t
PHL
= (0.5 ns/pF) CL + 85 ns
Clock to Q7
t
PLH
, t
PHL
= (1.7 ns/pF) CL + 915 ns
t
PLH
, t
PHL
= (0.66 ns/pF) CL + 367 ns
t
PLH
, t
PHL
= (0.5 ns/pF) CL + 275 ns
Reset to Q
n
t
PLH
, t
PHL
= (1.7 ns/pF) CL + 415 ns
t
PLH
, t
PHL
= (0.66 ns/pF) CL + 217 ns
t
PLH
, t
PHL
= (0.5 ns/pF) CL + 155 ns
ÎÎÎÎ
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5.0
10
15
5.0
10
15
5.0
10
15
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380
150
110
1000
400
300
500
250
180
600
230
175
2000
750
565
800
400
300
Clock Input Rise and Fall Time
MHz
*The formulas given are for the typical characteristics only at 25_C.
#Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance.
TRUTH TABLE
Clock Reset State
0 0 No Change
0 1 All Outputs Low
1 0 No Change
1 1 All Outputs Low
0 No Change
1 All Outputs Low
0 Advance One Count
1 All Outputs Low