M54/M74HC4518
M54/M74HC4520
HC4518 DUAL DECADE COUNTER
HC4520 DUAL 4 BIT BINARY COUNTER
.
.
.
.
.
.
.
.
HIGH SPEED
fMAX = 55 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 V TO 6 V
PIN AND FUNCTION COMPATIBLE WITH
4520B/4518B
B1R
(Plastic Package)
F1R
(Ceramic Package)
M1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HCXXXXF1R
M74HCXXXXM1R
M74HCXXXXB1R
M74HCXXXXC1R
PIN CONNECTIONS (top view)
DESCRIPTION
The M54/74HC4518/4520 are high speed CMOS
DUAL 4 BIT BINARY COUNTERS fabricated in sili2
con gate C MOS technology. They have the same
high speed performance of LSTTL combined with
true CMOS low power consumption.
They consists of two identical internally synchronous 4-stage counters. The counter stages are
D-type flip-flops having interchangeable Clock and
ENABLE inputs for incrementing on either the positive-going or negative-going transition.
For single-unit operation the ENABLE input is maintained ”high” and the counter advances on each
positive-going transition of the CLOCK. The
counters are cleared by high levels on their clear
lines. The counter can be cascaded in the ripple
mode by connecting Q4 to the enable input of the
subsequent counter while the clock input of the latter
is held permanently low.
All inputs are equipped with protection circuits
against static discharge and transient excess voltage.
March 1993
NC =
No Internal
Connection
1/13
M54/M74HC4518/4520
LOGIC DIAGRAM (1/2 HC4518)
LOGIC DIAGRAM (1/2 HC4520)
2/13
M54/M74HC4518/4520
TIMING CHART (HC4518)
TIMING CHART (HC4520)
3/13
M54/M74HC4518/4520
TRUTH TABLE
INPUTS
CLOCK
ENABLE
H
INCREMENT COUNTER
L
INCREMENT COUNTER
X
L
L
NO CHANGE
NO CHANGE
L
L
NO CHANGE
L
NO CHANGE
H
Q0 THRU Q3 = L
L
X
H
X
FUNCTION
CLEAR
L
X
X: Don’t Care Z: High Impedance
PIN DESCRIPTION
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN No
SYMBOL
NAME AND FUNCTION
1, 9
1CLOCK,
2CLOCK
Clock Inputs (LOW to
HIGH, Edge-triggered)
2, 10
1ENABLE,
2ENABLE
Clock Enable Inputs
3, 4, 5, 6
7, 15
1Q0 to 1Q3
1CLEAR,
2CLEAR
2Q0 to 2Q3
Data Outputs
Asynchronous Reset
Inputs (Active LOW)
Data Outputs
11, 12, 13,
14
8
GND
Ground (0V)
16
V CC
Positive Supply Voltage
IEC LOGIC SYMBOLS
HC4518
4/13
HC4520
M54/M74HC4518/4520
ABSOLUTE MAXIMUM RATINGS
Symbol
Value
Unit
VCC
VI
Supply Voltage
DC Input Voltage
-0.5 to +7
-0.5 to VCC + 0.5
V
V
VO
DC Output Voltage
-0.5 to VCC + 0.5
V
IIK
IOK
DC Input Diode Current
DC Output Diode Current
± 20
± 20
mA
mA
IO
DC Output Source Sink Current Per Output Pin
± 25
mA
DC VCC or Ground Current
± 50
mA
500 (*)
mW
ICC or IGND
Parameter
PD
Power Dissipation
Tstg
TL
Storage Temperature
Lead Temperature (10 sec)
-65 to +150
300
o
o
C
C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition isnotimplied.
(*) 500 mW: ≅ 65 oC derate to 300 mW by 10mW/oC: 65 oC to 85 oC
RECOMMENDED OPERATING CONDITIONS
Symbol
VCC
Parameter
Supply Voltage
VI
Input Voltage
VO
Top
Output Voltage
Operating Temperature: M54HC Series
M74HC Series
Input Rise and Fall Time
tr, tf
VCC = 2 V
Value
2 to 6
Unit
V
0 to VCC
V
0 to VCC
-55 to +125
-40 to +85
0 to 1000
V
C
o
C
ns
VCC = 4.5 V
0 to 500
VCC = 6 V
0 to 400
o
5/13
M54/M74HC4518/4520
DC SPECIFICATIONS
Test Conditions
Symbol
VIH
V IL
Parameter
High Level Input
Voltage
Low Level Input
Voltage
Value
VCC
(V)
TA = 25 oC
54HC and 74HC
Min. Typ. Max.
2.0
1.5
1.5
1.5
4.5
6.0
3.15
4.2
3.15
4.2
3.15
4.2
High Level
Output Voltage
0.5
0.5
0.5
4.5
1.35
1.35
1.35
2.0
4.5
6.0
4.5
VOL
Low Level Output
Voltage
6.0
2.0
4.5
6.0
4.5
6.0
II
ICC
6/13
Input Leakage
Current
Quiescent Supply
Current
6.0
6.0
1.8
1.8
Unit
V
2.0
6.0
V OH
-40 to 85 oC -55 to 125 oC
74HC
54HC
Min. Max. Min. Max.
V
1.8
1.9
2.0
1.9
1.9
VI =
IO=-20 µA
VIH
or
V IL IO=-4.0 mA
4.4
5.9
4.5
6.0
4.4
5.9
4.4
5.9
4.18
4.31
4.13
4.10
IO=-5.2 mA
5.68
5.8
0.0
5.63
5.60
V
VI =
IO= 20 µA
VIH
or
V IL IO= 4.0 mA
0.1
0.1
0.1
0.0
0.1
0.1
0.1
0.0
0.17
0.1
0.26
0.1
0.37
0.1
0.40
IO= 5.2 mA
0.18
V
0.26
0.37
0.40
VI = VCC or GND
±0.1
±1
±1
µA
VI = VCC or GND
4
40
80
µA
M54/M74HC4518/4520
AC ELECTRICAL CHARACTERISTICS (C L = 50 pF, Input t r = tf = 6 ns)
Test Conditions
Symbol
Parameter
tTLH
tTHL
Output Transition
Time
tPLH
tPHL
Propagation
Delay Time
(CK, CE - Qn)
tPHL
fMAX
Propagation
Delay Time
(CLR - Qn)
Maximum Clock
Frequency
tW(H)
tW(L)
Minimum Pulse
Width
(CK, CE)
tW(L)
Minimum Pulse
Width
(CLR)
tREM
CIN
CPD (*)
Minimum
Removal Time
(CLR)
Input Capacitance
Power Dissipation
Capacitance
Value
o
VCC
(V)
TA = 25 C
54HC and 74HC
Min. Typ. Max.
-40 to 85 oC -55 to 125 oC
74HC
54HC
Min. Max. Min. Max.
2.0
30
75
95
110
4.5
6.0
8
7
15
13
19
16
22
19
2.0
72
160
200
240
4.5
22
32
40
48
6.0
18
27
34
41
2.0
65
150
190
225
4.5
6.0
20
16
30
26
38
33
45
38
2.0
6
23
4.8
4
4.5
6.0
30
35
51
60
24
28
20
24
Unit
ns
ns
ns
MHz
2.0
25
75
95
4.5
6.0
6
5
15
13
19
16
2.0
20
75
95
110
4.5
6.0
5
4
15
13
19
16
22
19
2.0
21
50
60
75
4.5
6.0
3
3
10
9
12
11
15
13
ns
5
38
32
10
10
10
pF
for HC4518
for HC4520
ns
ns
pF
(*) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load.
(Refer to Test Circuit). Average operting current can be obtained by the following equation. ICC(opr) = CPD •VCC •fIN + ICC/2 (per COUNTER)
7/13
M54/M74HC4518/4520
SWITCHING CHARACTERISTICS TEST WAVEFORMS
TEST CIRCUIT ICC (Opr.)
INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF SWITCHING CHARACTERISTICS TESTS.
8/13
M54/M74HC4518/4520
Plastic DIP16 (0.25) MECHANICAL DATA
mm
DIM.
MIN.
a1
0.51
B
0.77
TYP.
inch
MAX.
MIN.
TYP.
MAX.
0.020
1.65
0.030
0.065
b
0.5
0.020
b1
0.25
0.010
D
20
0.787
E
8.5
0.335
e
2.54
0.100
e3
17.78
0.700
F
7.1
0.280
I
5.1
0.201
L
Z
3.3
0.130
1.27
0.050
P001C
9/13
M54/M74HC4518/4520
Ceramic DIP16/1 MECHANICAL DATA
mm
DIM.
MIN.
TYP.
inch
MAX.
MIN.
TYP.
MAX.
A
20
0.787
B
7
0.276
D
E
3.3
0.130
0.38
e3
0.015
17.78
0.700
F
2.29
2.79
0.090
0.110
G
0.4
0.55
0.016
0.022
H
1.17
1.52
0.046
0.060
L
0.22
0.31
0.009
0.012
M
0.51
1.27
0.020
0.050
N
P
Q
10.3
7.8
8.05
5.08
0.406
0.307
0.317
0.200
P053D
10/13
M54/M74HC4518/4520
SO16 (Narrow) MECHANICAL DATA
mm
DIM.
MIN.
TYP.
A
a1
inch
MAX.
MIN.
TYP.
1.75
0.1
0.068
0.2
a2
MAX.
0.004
0.007
1.65
0.064
b
0.35
0.46
0.013
0.018
b1
0.19
0.25
0.007
0.010
C
0.5
0.019
c1
45° (typ.)
D
9.8
E
5.8
10
0.385
6.2
0.228
0.393
0.244
e
1.27
0.050
e3
8.89
0.350
F
3.8
4.0
0.149
0.157
G
4.6
5.3
0.181
0.208
L
0.5
1.27
0.019
0.050
M
S
0.62
0.024
8° (max.)
P013H
11/13
M54/M74HC4518/4520
PLCC20 MECHANICAL DATA
mm
DIM.
MIN.
TYP.
inch
MAX.
MIN.
TYP.
MAX.
A
9.78
10.03
0.385
0.395
B
8.89
9.04
0.350
0.356
D
4.2
4.57
0.165
0.180
d1
2.54
0.100
d2
0.56
0.022
E
7.37
8.38
0.290
0.330
e
1.27
0.050
e3
5.08
0.200
F
0.38
0.015
G
0.101
0.004
M
1.27
0.050
M1
1.14
0.045
P027A
12/13
M54/M74HC4518/4520
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No
license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronics products are not authorized for use ascritical components in life support devices or systems without express
written approval of SGS-THOMSON Microelectonics.
 1994 SGS-THOMSON Microelectronics - All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES
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13/13