The UT54ACS163 and the UT54ACTS163 are synchronous
presettable 4-bit binary counters that feature internal carry look-
ahead logic for high-speed counting designs. Synchronous op-
eration occurs by having all flip-flops clocked simultaneously
so that the outputs change coincident with each other when in-
structed by the count-enable inputs and internal gating. A buff-
ered clock input triggers the four flip-flops on the rising (posi-
tive-going) edge of the clock input waveform.
The counters are fully programmable (i.e., they may be preset
to any number between 0 and 15). Presetting is synchronous;
applying a low level at the load input disables the counter and
causes the outputs to agree with the load data after the next clock
pulse.
The clear function is synchronous and a low level at the clear
input sets all four of the flip-flop outputs low after the next clock
pulse. This synchronous clear allows the count length to be mod-
ified by decoding the Q outputs for the maximum count desired.
The counters feature a fully independent clock circuit. Changes
at control inputs (ENP, ENT, or LOAD) that modify the operat-
ing mode have no effect on the contents of the counter until
clocking occurs. The function of the counter (whether enabled,
disabled, loading, or counting) will be dictated solely by the
conditions meeting the stable setup and hold times.
The devices are characterized over full military temperature
range of -55°C to +125°C.
1
PINOUTS
16-Pin DIP
Top View
CLR
CLK
A
B
C
D
ENP
V
SS
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
DD
RCO
Q
A
Q
B
Q
C
Q
D
ENT
LOAD
16-Lead Flatpack
Top View
CLR
CLK
A
B
C
D
ENP
V
SS
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
DD
RCO
Q
A
Q
B
Q
C
Q
D
ENT
LOAD
LOGIC SYMBOL
(1)
CLR
(9)
LOAD
ENT
ENP
CLK
A
B
C
D
(10)
(7)
(2)
(3)
(4)
(5)
(6)
CTRDIV 16
5CT=0
M1
M2
3CT = 15
G3
G4
C5/2,3,4+
1,5D
(1)
(2)
(4)
(8)
(14)
(13)
(12)
(11)
Q
A
Q
B
Q
C
Q
D
(15)
RCO
Note:
1. Logic symbol in accordance with ANSI/IEEE Std 91-1984 and IEC Publi-
cation 617-12.
FUNCTION TABLE
Operating Mode
Reset (Clear)
Parallel Load
CLR
l
h
3
h
3
Count
Inhibit
h
3
h
3
h
3
CLK
↑
↑
↑
↑
ENP
X
X
X
h
l
2
X
ENT
X
X
X
h
X
l
2
LOAD
X
l
l
h
h
3
h
3
DATA A,B,C,D
X
l
h
X
X
X
Q
N
L
L
H
Count
Q
N
Q
N
RCO
L
L
1
1
1
X
X
L
H = High voltage level h = High voltage level one setup time prior to the low-to-high clock transition
L = Low voltage level
l
= Low voltage level one setup time prior to the low-to-high clock transition
Notes:
1. The RCO output is high when ENT is high and the counter is at terminal count HHHH.
2. The high-to-low transition of ENP or ENT should only occur while CLK is high for conventional operations.
3. The low-to-high transition of LOAD or CLR should only occur while CLK is high for conventional operations.
LOGIC DIAGRAM
(2)
(1)
D
C
Q
Q
CLK
CLR
(14)
Q
A
(9)
LOAD
(7)
ENP
(10)
ENT
(3)
DATA A
D
C
Q
Q
(13)
Q
B
DATA B
(4)
D
C
Q
Q
(12)
Q
C
DATA C
(5)
D
C
Q
Q
(11) Q
D
DATA D
(6)
(15)
RCO
2
OPERATIONAL ENVIRONMENT
1
PARAMETER
Total Dose
SEU Threshold
2
SEL Threshold
Neutron Fluence
LIMIT
1.0E6
80
120
1.0E14
UNITS
rads(Si)
MeV-cm
2
/mg
MeV-cm
2
/mg
n/cm
2
Notes:
1. Logic will not latchup during radiation exposure within the limits defined in the table.
2. Device storage elements are immune to SEU affects.
ABSOLUTE MAXIMUM RATINGS
SYMBOL
V
DD
V
I/O
T
STG
T
J
T
LS
Θ
JC
I
I
P
D
PARAMETER
Supply voltage
Voltage any pin
Storage Temperature range
Maximum junction temperature
Lead temperature (soldering 5 seconds)
Thermal resistance junction to case
DC input current
Maximum power dissipation
LIMIT
0.3 to 7.0
-.3 to V
DD
+.3
-65 to +150
+175
+300
20
±10
1
UNITS
V
V
°C
°C
°C
°C/W
mA
W
Note:
1. Stresses outside the listed absolute maximum ratings may cause permanent damage to the device. This is a stress rating only, functional operation of the
device at these or any other conditions beyond limits indicated in the operational sections is not recommended. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS
SYMBOL
V
DD
V
IN
T
C
PARAMETER
Supply voltage
Input voltage any pin
Temperature range
LIMIT
4.5 to 5.5
0 to V
DD
-55 to + 125
UNITS
V
V
°C
3
DC ELECTRICAL CHARACTERISTICS
7
(V
DD
= 5.0V
±
10%; V
SS
= 0V
6
, -55°C < T
C
< +125°C); Unless otherwise noted, Tc is per the temperature range ordered.
SYMBOL
V
IL
PARAMETER
Low-level input voltage
1
ACTS
ACS
High-level input voltage
1
ACTS
ACS
Input leakage current
ACTS/ACS
Low-level output voltage
3
ACTS
ACS
High-level output voltage
3
ACTS
ACS
Short-circuit output current
2 ,4
ACTS/ACS
Output current
10
(Sink)
I
OH
Output current
10
(Source)
P
total
I
DDQ
ΔI
DDQ
Power dissipation
2, 8, 9
Quiescent Supply Current
Quiescent Supply Current Delta
ACTS
V
IN
= V
DD
or V
SS
I
OL
= 8.0mA
I
OL
= 100μA
I
OH
= -8.0mA
I
OH
= -100μA
V
O
= V
DD
and V
SS
V
IN
= V
DD
or V
SS
V
OL
= 0.4V
V
IN
= V
DD
or V
SS
V
OH
= V
DD
- 0.4V
C
L
= 50pF
V
DD
= 5.5V
For input under test
V
IN
= V
DD
- 2.1V
For all other inputs
V
IN
= V
DD
or V
SS
V
DD
= 5.5V
C
IN
C
OUT
Input capacitance
5
Output capacitance
5
ƒ
= 1MHz @ 0V
ƒ
= 1MHz @ 0V
15
15
pF
pF
1.9
10
1.6
mW/
MHz
μA
mA
-8
mA
.7V
DD
V
DD
- 0.25
-200
8
200
.5V
DD
.7V
DD
-1
1
CONDITION
MIN
MAX
0.8
.3V
DD
UNIT
V
V
IH
V
I
IN
V
OL
μA
0.40
0.25
V
V
OH
V
I
OS
I
OL
mA
mA
4
Notes:
1. Functional tests are conducted in accordance with MIL-STD-883 with the following input test conditions: V
IH
= V
IH
(min) + 20%, - 0%; V
IL
= V
IL
(max) + 0%, -
50%, as specified herein, for TTL, CMOS, or Schmitt compatible inputs. Devices may be tested using any input voltage within the above specified range, but are
guaranteed to V
IH
(min) and V
IL
(max).
2. Supplied as a design limit but not guaranteed or tested.
3. Per MIL-PRF-38535, for current density
≤
5.0E5 amps/cm
2
, the maximum product of load capacitance (per output buffer) times frequency should not exceed 3,765
pF/MHz.
4. Not more than one output may be shorted at a time for maximum duration of one second.
5. Capacitance measured for initial qualification and when design changes may affect the value. Capacitance is measured between the designated terminal and V
SS
at
frequency of 1MHz and a signal amplitude of 50mV rms maximum.
6. Maximum allowable relative shift equals 50mV.
7. All specifications valid for radiation dose
≤1E6
rads(Si).
8. Power does not include power contribution of any TTL output sink current.
9. Power dissipation specified per switching output.
10. This value is guaranteed based on characterization data, but not tested.
[Be cautious when conducting online transactions. Please understand the other party's credibility and situation on your own. Trading rules: https://bbs.eeworld.com.cn/thread-71680-1-1.html ]September ...
I want to convert a triangle spike wave into a square wave. How should I design the circuit? Especially when the input voltage is 0-1.2v, but the output is 5v, how can I cut the triangle spike wave in...
[i=s] This post was last edited by damiaa on 2015-4-1 22:46[/i]First, let's look at the message buffer structure and data sending related structures in BitCloud: /typedef struct { /** The status of th...
Our unit now has a project that is urgently looking for MCU development talents. The project is to develop something similar to an electric car. Qualified people are welcome to contact us by phone: 13...
When the cc1 channel is configured as input, ic1 is mapped to TI1FP1 and ic1 is mapped to TI2FP1. Does it mean that you can choose CH1 or CH2 to capture the signal of channel 1? What is the difference...
1. Equipment Overview
Shell-and-tube heat exchangers are a common heat exchange device used in chemical evaporation and heating equipment. Currently, the tubesheets of shell-and-tube heat exch...[Details]
EtherCAT (Ethernet for Control Automation Technology) is a real-time industrial fieldbus communication protocol based on an Ethernet-based development framework. EtherCAT is one of the fastest indu...[Details]
"Have you set your calendar reminder?"
On August 24, Nvidia Robotics' official account posted a photo of a black gift box on a social media platform, with an attached greeting card sig...[Details]
On August 22, Lantu Motors officially launched its Lanhai Intelligent Hybrid technology via an online livestream. This intelligent hybrid technology, which integrates a full-range 800V high-voltage...[Details]
Since its invention in the mid-1940s, the microwave oven has evolved from a humble beginning to commercial use, entering homes in the 1960s and rapidly gaining popularity. Its basic functionality a...[Details]
Electric vehicles are now widespread, but they've brought with them a host of problems, the most prominent of which is charging. Small electric vehicles (EVs) are a new form of transportation in a ...[Details]
In the field of intelligent driving, regulations are becoming increasingly stringent, and the technical threshold continues to rise. Especially after the traffic accident in March 2025, the Ministr...[Details]
In daily life, when we purchase a transformer, we are faced with the installation and wiring procedures. Generally speaking, large transformers such as power transformers are equipped with speciali...[Details]
A pure sine wave inverter has a good output waveform with very low distortion, and its output waveform is essentially the same as the AC waveform of the mains power grid. In fact, the AC power prov...[Details]
With growing environmental awareness, the continuous improvement of three-electric technology and the increasing deployment of infrastructure such as charging stations, the electrification of new e...[Details]
introduction
With the development and widespread use of integrated circuits in power electronics design, electronic products are trending towards smaller sizes, more components, and greater fu...[Details]
0 Introduction
Portable terminals integrate a computer and display screen into a single device. Due to limited space in portable devices, previous designs often used a single-chip microcompute...[Details]
Reasons for the wear of the roller press reducer shaft:
1. Since the expansion sleeve is subjected to a large torque, the mating surfaces of the shaft and the sleeve move relative to each other...[Details]
In industrial production, many different controllers are often used, such as those for pressure, flow, electrical parameters, temperature, and sound. However, due to the limitations of the on-site ...[Details]
Naxin Micro releases the NS800RT737x high-performance real-time control MCU (DSP), enabling core control in the industrial and energy sectors.
In power electronics and electric drive...[Details]
Buy&Sell
京公网安备 11010802033920号
EEWORLD
