1
Data sheet acquired from Harris Semiconductor
SCHS221D
Features
Synchronous or Asynchronous Preset
Cascadable in Synchronous or Ripple Mode
Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
Wide Operating Temperature Range . . . -55
o
C to 125
o
C
Balanced Propagation Delay and Transition Times
Significant Power Reduction Compared to LSTTL
Logic ICs
HC Types
- 2V to 6V Operation
- High Noise Immunity: N
IL
= 30%, N
IH
= 30% of V
CC
at V
CC
= 5V
HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
V
IL
= 0.8V (Max), V
IH
= 2V (Min)
- CMOS Input Compatibility, I
l
1
A at V
OL
, V
OH
Description
The 'HC40103 and CD74HCT40103 are manufactured with
high speed silicon gate technology and consist of an 8-stage
synchronous down counter with a single output which is
active when the internal count is zero. The 40103 contains a
single 8-bit binary counter. Each has control inputs for
enabling or disabling the clock, for clearing the counter to its
maximum count, and for presetting the counter either
synchronously or asynchronously. All control inputs and the
TC output are active-low logic.
In normal operation, the counter is decremented by one
count on each positive transition of the CLOCK (CP).
Counting is inhibited when the TE input is high. The TC
output goes low when the count reaches zero if the TE input
is low, and remains low for one full clock period.
When the PE input is low, data at the P0-P7 inputs are
clocked into the counter on the next positive clock transition
regardless of the state of the TE input. When the PL input is
low, data at the P0-P7 inputs are asynchronously forced into
the counter regardless of the state of the PE, TE, or CLOCK
inputs. Input P0-P7 represent a single 8-bit binary word for
the 40103. When the MR input is low, the counter is
asynchronously cleared to its maximum count of 255
10
,
regardless of the state of any other input. The precedence
relationship between control inputs is indicated in the truth
table.
If all control inputs except TE are high at the time of zero
count, the counters will jump to the maximum count, giving a
counting sequence of 100
16
or 256
10
clock pulses long.
The 40103 may be cascaded using the TE input and the TC
output, in either a synchronous or ripple mode. These
circuits possess the low power consumption usually
associated
with
CMOS
circuitry,
yet
have
speeds
comparable to low power Schottky TTL circuits and can drive
up to 10 LSTTL loads.
Ordering Information
PART NUMBER
TEMP. RANGE
(
o
C)
PACKAGE
CD54HC40103F3A
-55 to 125
16 Ld CERDIP
CD74HC40103E
-55 to 125
16 Ld PDIP
CD74HC40103M
-55 to 125
16 Ld SOIC
CD74HC40103MT
-55 to 125
16 Ld SOIC
CD74HC40103M96
-55 to 125
16 Ld SOIC
CD74HCT40103E
-55 to 125
16 Ld PDIP
CD74HCT40103M
-55 to 125
16 Ld SOIC
CD74HCT40103MT
-55 to 125
16 Ld SOIC
CD74HCT40103M96
-55 to 125
16 Ld SOIC
NOTE: When ordering, use the entire part number. The suffix 96
denotes tape and reel. The suffix T denotes a small-quantity reel
of 250.
November 1997 - Revised October 2003
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
2003, Texas Instruments Incorporated
CD54HC40103, CD74HC40103,
CD74HCT40103
High-Speed CMOS Logic
8-Stage Synchronous Down Counters
[ /Title
(CD74H
C40103,
CD74H
CT4010
3)
/Sub-
ject
(High
Speed
CMOS
Logic 8-
2
Pinout
CD54HC40103
(CERDIP)
CD74HC40103, CD74HCT40103
(PDIP, SOIC)
TOP VIEW
Functional Diagram
TRUTH TABLE
CONTROL INPUTS
PRESET MODE
ACTION
MR
PL
PE
TE
1
1
1
1
Synchronous
Inhibit Counter
1
1
1
0
Count Down
1
1
0
X
Preset On Next Positive Clock Transition
1
0
X
X
Asynchronously
Preset Asychronously
0
X
X
X
Clear to Maximum Count
1 = High Level.
0 = Low Level.
X = Don't Care.
Clock connected to clock input.
Synchronous Operation: changes occur on negative-to-positive clock transitions.
Load Inputs: MSB = P7, LSB = P0.
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
CP
MR
TE
P0
P1
P2
GND
P3
V
CC
TC
P7
P6
P5
P4
PL (ASYNC)
PE (SYNC)
7
10
11
12
13
GND
4
5
6
P3
P4
P5
P6
P7
P0
P1
P2
CP
MR
PE
PL
TE
V
CC
TC
15
9
3
1
2
16
8
14
CD54HC40103, CD74HC40103, CD74HCT40103
3
Absolute Maximum Ratings
Thermal Information
DC Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V
DC Input Diode Current, I
IK
For V
I
< -0.5V or V
I
> V
CC
+ 0.5V
. . . . . . . . . . . . . . . . . . . . . .
20mA
DC Output Diode Current, I
OK
For V
O
< -0.5V or V
O
> V
CC
+ 0.5V
. . . . . . . . . . . . . . . . . . . .
20mA
DC Output Source or Sink Current per Output Pin, I
O
For V
O
> -0.5V or V
O
< V
CC
+ 0.5V
. . . . . . . . . . . . . . . . . . . .
25mA
DC V
CC
or Ground Current, I
CC
. . . . . . . . . . . . . . . . . . . . . . . . .
50mA
Operating Conditions
Temperature Range, T
A
. . . . . . . . . . . . . . . . . . . . . . -55
o
C to 125
o
C
Supply Voltage Range, V
CC
HC Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2V to 6V
HCT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V
DC Input or Output Voltage, V
I
, V
O
. . . . . . . . . . . . . . . . . 0V to V
CC
Input Rise and Fall Time
2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000ns (Max)
4.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500ns (Max)
6V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400ns (Max)
Thermal Resistance (Typical, Note 1)
JA
(
o
C/W)
E (PDIP) Package . . . . . . . . . . . . . . . . . . . . . . . . . .
67
M (SOIC) Package. . . . . . . . . . . . . . . . . . . . . . . . . .
73
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150
o
C
Maximum Storage Temperature Range . . . . . . . . . .-65
o
C to 150
o
C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300
o
C
(SOIC - Lead Tips Only)
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1. The package thermal impedance is calculated in accordance with JESD 51-7.
DC Electrical Specifications
PARAMETER
SYMBOL
TEST
CONDITIONS
V
CC
(V)
25
o
C
-40
o
C TO 85
o
C -55
o
C TO 125
o
C
UNITS
V
I
(V)
I
O
(mA)
MIN
TYP
MAX
MIN
MAX
MIN
MAX
HC TYPES
High Level Input
Voltage
V
IH
-
-
2
1.5
-
-
1.5
-
1.5
-
V
4.5
3.15
-
-
3.15
-
3.15
-
V
6
4.2
-
-
4.2
-
4.2
-
V
Low Level Input
Voltage
V
IL
-
-
2
-
-
0.5
-
0.5
-
0.5
V
4.5
-
-
1.35
-
1.35
-
1.35
V
6
-
-
1.8
-
1.8
-
1.8
V
High Level Output
Voltage
CMOS Loads
V
OH
V
IH
or V
IL
-0.02
2
1.9
-
-
1.9
-
1.9
-
V
-0.02
4.5
4.4
-
-
4.4
-
4.4
-
V
-0.02
6
5.9
-
-
5.9
-
5.9
-
V
High Level Output
Voltage
TTL Loads
-
-
-
-
-
-
-
-
-
V
-4
4.5
3.98
-
-
3.84
-
3.7
-
V
-5.2
6
5.48
-
-
5.34
-
5.2
-
V
Low Level Output
Voltage
CMOS Loads
V
OL
V
IH
or V
IL
0.02
2
-
-
0.1
-
0.1
-
0.1
V
0.02
4.5
-
-
0.1
-
0.1
-
0.1
V
0.02
6
-
-
0.1
-
0.1
-
0.1
V
Low Level Output
Voltage
TTL Loads
-
-
-
-
-
-
-
-
-
V
4
4.5
-
-
0.26
-
0.33
-
0.4
V
5.2
6
-
-
0.26
-
0.33
-
0.4
V
Input Leakage
Current
I
I
V
CC
or
GND
-
6
-
-
0.1
-
1
-
1
A
Quiescent Device
Current
I
CC
V
CC
or
GND
0
6
-
-
8
-
80
-
160
A
CD54HC40103, CD74HC40103, CD74HCT40103
4
HCT TYPES
High Level Input
Voltage
V
IH
-
-
4.5 to
5.5
2
-
-
2
-
2
-
V
Low Level Input
Voltage
V
IL
-
-
4.5 to
5.5
-
-
0.8
-
0.8
-
0.8
V
High Level Output
Voltage
CMOS Loads
V
OH
V
IH
or V
IL
-0.02
4.5
4.4
-
-
4.4
-
4.4
-
V
High Level Output
Voltage
TTL Loads
-4
4.5
3.98
-
-
3.84
-
3.7
-
V
Low Level Output
Voltage
CMOS Loads
V
OL
V
IH
or V
IL
0.02
4.5
-
-
0.1
-
0.1
-
0.1
V
Low Level Output
Voltage
TTL Loads
4
4.5
-
-
0.26
-
0.33
-
0.4
V
Input Leakage
Current
I
I
V
CC
and
GND
0
5.5
-
-
0.1
-
1
-
1
A
Quiescent Device
Current
I
CC
V
CC
or
GND
0
5.5
-
-
8
-
80
-
160
A
Additional Quiescent
Device Current Per
Input Pin: 1 Unit Load
I
CC
(Note 2)
V
CC
-2.1
-
4.5 to
5.5
-
100
360
-
450
-
490
A
NOTE:
2. For dual-supply systems theoretical worst case (V
I
= 2.4V, V
CC
= 5.5V) specification is 1.8mA.
DC Electrical Specifications
(Continued)
PARAMETER
SYMBOL
TEST
CONDITIONS
V
CC
(V)
25
o
C
-40
o
C TO 85
o
C -55
o
C TO 125
o
C
UNITS
V
I
(V)
I
O
(mA)
MIN
TYP
MAX
MIN
MAX
MIN
MAX
HCT Input Loading Table
INPUT
UNIT LOADS (NOTE)
P0-P7
0.20
TE, MR
0.40
CP
0.60
PE
0.80
PL
1.35
NOTE: Unit Load is
I
CC
limit specified in DC Electrical Table, e.g.,
360
A max at 25
o
C.
Prerequisite for Switching Specifications
PARAMETER
SYMBOL
V
CC
(V)
25
o
C
-40
o
C TO 85
o
C
-55
o
C TO 125
o
C
UNITS
MIN
TYP
MAX
MIN
MAX
MIN
MAX
HC TYPES
CP Pulse Width
t
W
2
165
-
-
205
-
250
-
ns
4.5
33
-
-
41
-
50
-
ns
6
28
-
-
35
-
43
-
ns
PL Pulse Width
t
W
2
125
-
-
155
-
190
-
ns
4.5
25
-
-
31
-
38
-
ns
6
21
-
-
26
-
32
-
ns
CD54HC40103, CD74HC40103, CD74HCT40103
5
MR Pulse Width
t
W
2
125
-
-
135
-
190
-
ns
4.5
25
-
-
31
-
38
-
ns
6
21
-
-
26
-
32
-
ns
CP Max. Frequency
(Note 3)
f
CP(MAX)
2
3
-
-
2
-
2
-
MHz
4.5
15
-
-
12
-
10
-
MHz
6
18
-
-
14
-
12
-
MHz
P to CP Set-up Time
t
SU
2
100
-
-
125
-
150
-
ns
4.5
20
-
-
25
-
30
-
ns
6
17
-
-
21
-
26
-
ns
PE to CP Set-up Time
t
SU
2
75
-
-
95
-
110
-
ns
4.5
15
-
-
19
-
22
-
ns
6
13
-
-
16
-
19
-
ns
TE to CP Set-up Time
t
SU
2
150
-
-
190
-
225
-
ns
4.5
30
-
-
38
-
45
-
ns
6
26
-
-
33
-
38
-
ns
P to CP Hold Time
t
H
2
5
-
-
5
-
5
-
ns
4.5
5
-
-
5
-
5
-
ns
6
5
-
-
5
-
5
-
ns
TE to CP Hold Time
t
H
2
0
-
-
0
-
0
-
ns
4.5
0
-
-
0
-
0
-
ns
6
0
-
-
0
-
0
-
ns
MR to CP Removal Time
t
REM
2
50
-
-
65
-
75
-
ns
4.5
10
-
-
13
-
15
-
ns
6
9
-
-
11
-
13
-
ns
PE to CP Hold Time
t
H
2
2
-
-
2
-
2
-
ns
4.5
2
-
-
2
-
2
-
ns
6
2
-
-
2
-
2
-
ns
HCT TYPES
CP Pulse Width
t
W
4.5
35
-
-
44
-
53
-
ns
PL Pulse Width
t
W
4.5
43
-
-
54
-
65
-
ns
MR Pulse Width
t
W
4.5
35
-
-
44
-
53
-
ns
CP Max. Frequency
(Note 3)
f
CP(MAX)
4.5
14
-
-
11
-
9
-
MHz
P to CP Set-up Time
t
SU
4.5
24
-
-
30
-
36
-
ns
PE to CP Set-up Time
t
SU
4.5
20
-
-
25
-
30
-
ns
TE to CP Set-up Time
t
SU
4.5
40
-
-
50
-
60
-
ns
P to CP Hold Time
t
H
4.5
5
-
-
5
-
5
-
ns
TE to CP Hold Time
t
H
4.5
0
-
-
0
-
0
-
ns
MR to CP Removal Time
t
REM
4.5
10
-
-
13
-
15
-
ns
PE to CP Hold Time
tH
4.5
2
-
-
2
-
2
-
ns
Prerequisite for Switching Specifications
(Continued)
PARAMETER
SYMBOL
V
CC
(V)
25
o
C
-40
o
C TO 85
o
C
-55
o
C TO 125
o
C
UNITS
MIN
TYP
MAX
MIN
MAX
MIN
MAX
CD54HC40103, CD74HC40103, CD74HCT40103
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