Three-state outputs drive bus lines or buffer memory address
registers
radiation-hardened CMOS
- Latchup immune
High speed
Low power consumption
Single 5 volt supply
Available QML Q or V processes
Flexible package
- 20-pin DIP
- 20-lead flatpack
DESCRIPTION
The UT54ACS244 and the UT54ACTS244 are non-inverting
octal buffer and line drivers which improve the performance and
density of three-state memory address drivers, clock drivers,
and bus-oriented receivers and transmitters.
The devices are characterized over full military temperature
range of -55 C to +125 C.
FUNCTION TABLE
INPUTS
1G, 2G
L
L
H
A
L
H
X
OUTPUT
Y
L
H
Z
PINOUTS
20-Pin DIP
Top View
1G
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
V
SS
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
DD
2G
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
20-Lead Flatpack
Top View
1G
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
V
SS
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
DD
2G
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
LOGIC SYMBOL
1G
1A1
(1)
(2)
EN
(18)
(16)
(14)
(12)
1Y1
1Y2
1Y3
1Y4
(4)
1A2
(6)
1A3
(8)
1A4
(19)
(11)
2G
2A1
EN
(9)
(7)
(5)
(3)
2Y1
2Y2
2Y3
2Y4
(13)
2A2
(15)
2A3
(17)
2A4
Note:
1. Logic symbol in accordance with ANSI/IEEE Std 91-1984 and IEC
Publication 617-12.
159
RadHard MSI Logic
UT54ACS244/UT54ACTS244
LOGIC DIAGRAM
1G (1)
2G (19)
1A1
(2)
(18)
1Y1
2A1
(11)
(9)
2Y1
1A2
(4)
(16)
1Y2
2A2
(13)
(7)
2Y2
1A3
(6)
(14)
1Y3
2A3
(15)
(5)
2Y3
1A4
(8)
(12)
1Y4
2A4
(17)
(3)
2Y4
RADIATION HARDNESS SPECIFICATIONS
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
JC
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
I
I
P
D
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.
RadHard MSI Logic
160
UT54ACS244/UT54ACTS244
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
161
RadHard MSI Logic
UT54ACS244/UT54ACTS244
DC ELECTRICAL CHARACTERISTICS
7
(V
DD
= 5.0V 10%; V
SS
= 0V
6
, -55 C < T
C
< +125 C)
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
Output current
10
(Sink)
I
OH
Output current
10
(Source)
I
OZ
I
OS
P
total
I
DDQ
I
DDQ
Three-state output leakage current
Short-circuit output current
2 ,4
ACTS/ACS
Power dissipation
2,8,9
Quiescent Supply Current
Quiescent Supply Current Delta
ACTS
V
IN
= V
DD
or V
SS
I
OL
= 12.0mA
I
OL
= 100 A
I
OH
= -12.0mA
I
OH
= -100 A
V
IN
= V
DD
or V
SS
V
OL
= 0.4V
V
IN
= V
DD
or V
SS
V
OH
= V
DD
- 0.4V
V
O
= V
DD
and V
SS
V
O
= V
DD
and V
SS
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
= 1MHz @ 0V
= 1MHz @ 0V
15
15
pF
pF
-30
-300
30
300
2.0
10
1.6
A
mA
mW/
MHz
A
mA
-12
mA
.7V
DD
V
DD
- 0.25
12
.5V
DD
.7V
DD
-1
1
0.40
0.25
CONDITION
MIN
MAX
0.8
.3V
DD
UNIT
V
V
IH
V
I
IN
V
OL
A
V
V
OH
V
I
OL
mA
RadHard MSI Logic
162
UT54ACS244/UT54ACTS244
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.
Recruiting WAP Alliance Operations Director and Marketing Director WAP Alliance Operations Director and Marketing Director (2 positions) Minimum education: College degree or above Work experience: 3 y...
I use TP4056 to charge a lithium battery. The interface uses a 6-pin USB-TYPE-C female socket. How should I connect the power and ground wires? Which wires do I need to connect?...
Wireless LAN card I don't know the agent of this product. I want an industrial grade one. Please recommend one. If you are an agent, you can also contact me! MSN: shibj2039@msn.cn...
I am also a programmer, but I always hear seniors in the company say that people who work on MPEG video algorithms are great people. I wonder if they mean that salaries in this field are relatively hi...
I use the DISPIC33F chip qei to locate the axis and calculate the speed. I set QEI to use index reset. I put the position data in two parameters A and B, A is the current position, B is the previous p...
Emergency hand-held lamps powered by 6V maintenance-free batteries are widely used in rural areas. The charger used is a transformer step-down and single diode half-wave rectifier, and the charging...[Details]
At present, the development of wireless power supply technology for electric vehicles (EVs) is becoming more and more active. In 2012, Volvo of Sweden established Volvo Technology Japan in Tokyo as...[Details]
Today's computer peripherals are pursuing high speed and high versatility. In order to meet user needs, seven companies led by Intel launched the USB (Universal Serial Bus) bus protocol in 1994, wh...[Details]
In early 2002, I started to write a working program for an IC card prepaid electricity meter. The meter used Philips' 8-bit 51-expanded single-chip microcomputer
87LPC764
, and wa...[Details]
introduction
Since the beginning of the 21st century, the world of information has changed rapidly. Maybe a high-tech product will be released today and a better similar product will be releas...[Details]
1. Introduction
RFID (radio frequency identification) is a non-contact automatic identification technology that emerged in the 1990s. It uses the characteristics of radio frequency signal prop...[Details]
Automotive applications are particularly sensitive to EMI events, which are unavoidable in a noisy electrical environment consisting of a central battery, bundled wiring harnesses, various inductiv...[Details]
Analog engineers have traditionally struggled with complexity when designing power supplies that required multiple outputs, dynamic load sharing, hot-swap, or extensive fault-handling capabilities....[Details]
In order to highlight the concept of "energy saving and environmental protection" of intelligent buildings, solar street lights are designed for intelligent communities. The inclination and capacit...[Details]
The reason for the light decay of white LEDs: the decline of phosphor performance
So far, the rapid decline of the luminous performance of white light LEDs, especially low-power white light LE...[Details]
Electronic systems are located at different points on the automotive power bus and therefore often need to operate under very stringent power requirements. These include load dump, cold crank, very lo...[Details]
The solidification and modularization of intelligent video analysis algorithms are the current trends in the application of intelligent video analysis technology. It perfectly combines intelligent ...[Details]
Although it is relatively easy to check the stability of a simple amplifier at lower frequencies, it may be much more difficult to evaluate the stability of a more complex circuit. This artic...[Details]
Vertical cavity surface emitting lasers (VCSELs) are gradually replacing traditional edge emitting lasers, especially in low bandwidth and short-distance communication systems where cost factors ar...[Details]
1. Introduction to CIF Board
Fieldbus integration based on PC system
Whether it is a master or a slave, fieldbus has won unanimous praise in the field of PC-based automation. For more...[Details]
Recruitment
京公网安备 11010802033920号
EEWORLD
