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부품번호 74ACTQ543SPC 기능
기능 Quiet Series Octal Registered Transceiver with 3-STATE Outputs
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74ACTQ543SPC 데이터시트, 핀배열, 회로
www.DataSheet4U.com
January 1990
Revised August 2000
74ACQ54374ACTQ543
Quiet SeriesOctal Registered Transceiver
with 3-STATE Outputs
General Description
The ACQ/ACTQ543 is a non-inverting octal transceiver
containing two sets of D-type registers for temporary stor-
age of data flowing in either direction. Separate Latch
Enable and Output Enable inputs are provided for each
register to permit independent input and output control in
either direction of data flow.
The ACQ/ACTQ utilizes Fairchild Quiet Seriestechnol-
ogy to guarantee quiet output switching and improved
dynamic threshold performance FACT Quiet Seriesfea-
tures GTOoutput control and undershoot corrector in
addition to a split ground bus for superior performance.
Features
s Guaranteed simultaneous switching noise level and
dynamic threshold performance
s Guaranteed pin-to-pin skew AC performance
s 8-bit octal latched transceiver
s Separate controls for data flow in each direction
s Back-to-back registers for storage
s Outputs source/sink 24 mA
s 300 mil slim PDIP/SOIC
Ordering Code:
Order Number Package Number
Package Description
74ACQ543SC
M24B
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74ACQ543SPC
N24C
24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
74ACTQ543SC
M24B
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74ACTQ543QSC
MQA24
24-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150 Wide
74ACTQ543SPC
N24C
24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the order code.
Connection Diagram
Pin Descriptions
Pin Names
Description
OEAB
OEBA
CEAB
CEBA
LEAB
LEBA
A0A7
B0B7
A-to-B Output Enable Input (Active LOW)
B-to-A Output Enable Input (Active LOW)
A-to-B Enable Input (Active LOW)
B-to-A Enable Input (Active LOW)
A-to-B Latch Enable Input (Active LOW)
B-to-A Latch Enable Input (Active LOW)
A-to-B Data Inputs or
B-to-A 3-STATE Outputs
B-to-A Data Inputs or
A-to-B 3-STATE Outputs
FACT, Quiet Series, FACT Quiet Seriesand GTOare trademarks of Fairchild Semiconductor Corporation.
© 2000 Fairchild Semiconductor Corporation DS010154
www.fairchildsemi.com




74ACTQ543SPC pdf, 반도체, 판매, 대치품
DC Electrical Characteristics for ACQ (Continued)
Symbol
Parameter
VCC
TA = +25°C
TA = −40°C to +85°C
Units
(V) Typ
Guaranteed Limits
Conditions
VOLP
VOLV
VIHD
Quiet Output
Maximum Dynamic VOL
Quiet Output
Minimum Dynamic VOL
Minimum HIGH Level
Dynamic Input Voltage
5.0 1.1 1.5
5.0 0.6 1.2
5.0 3.1 3.5
Figures 1, 2
V
(Note 5)(Note 6)
Figures 1, 2
V
(Note 5)(Note 6)
V (Note 5)(Note 7)
VILD
Maximum LOW Level
Dynamic Input Voltage
5.0 1.9 1.5
V (Note 5)(Note 7)
Note 2: Maximum of 8 outputs loaded; thresholds on input associated with output under test.
Note 3: Maximum test duration 2.0 ms, one output loaded at a time.
Note 4: IIN and ICC @ 3.0V are guaranteed to be less than or equal to the respective limit @ 5.5V VCC.
Note 5: Plastic DIP package.
Note 6: Max number of outputs defined as (n). Data Inputs are driven 0V to 5V. One output @ GND.
Note 7: Max number of Data Inputs (n) switching. (n1) Inputs switching 0V to 5V (ACQ). Input-under-test switching: 5V to threshold (VILD),
0V to threshold (VIHD), f = 1 MHz.
DC Electrical Characteristics for ACTQ
Symbol
Parameter
VCC
TA = +25°C
TA = −40°C to +85°C
Units
(V) Typ
Guaranteed Limits
Conditions
Minimum HIGH Level
VIH Input Voltage
Maximum LOW Level
VIL Input Voltage
Minimum HIGH Level
Output Voltage
4.5 1.5 2.0
5.5 1.5 2.0
4.5 1.5 0.8
5.5 1.5 0.8
4.5 4.49 4.4
5.5 5.49 5.4
2.0
2.0
0.8
0.8
4.4
5.4
V VOUT = 0.1V
or VCC 0.1V
V VOUT = 0.1V
or VCC 0.1V
V IOUT = −50 µA
VOH
Maximum LOW Level
Output Voltage
4.5 3.86
5.5 4.86
4.5 0.001 0.1
5.5 0.001 0.1
3.76
4.76
0.1
0.1
VIN = VIL or VIH
V IOH = 24 mA
IOH = 24 mA (Note 8)
V IOUT = 50 µA
VOL
IIN
IOZT
ICCT
IOLD
IOHD
ICC
VOLP
VOLV
VIHD
Maximum Input Leakage Current
Maximum I/O
Leakage Current
Maximum ICC/Input
Minimum Dynamic
Output Current (Note 9)
Maximum Quiescent Supply Current
Quiet Output
Maximum Dynamic VOL
Quiet Output
Minimum Dynamic VOL
Minimum HIGH Level Dynamic
Input Voltage
4.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
5.0
5.0
5.0
0.36
0.36
± 0.1
±0.6
0.6
1.1
0.6
1.9
8.0
1.5
1.2
2.2
0.44
0.44
± 1.0
6.0
1.5
75
75
80.0
VIN = VIL or VIH
V IOL = 24 mA
IOL = 24 mA (Note 8)
µA VI = VCC, GND
µA V(OE) = VIL, VIH
VO = VCC, GND
mA VI = VCC 2.1V
mA VOLD = 1.65V Max
mA VOHD = 3.85V Min
µA VIN = VCC or GND
Figures 1, 2
V
(Note 10)(Note 11)
Figures 1, 2
V
(Note 10)(Note 11)
V (Note 10)(Note 12)
VILD
Maximum LOW Level Dynamic
Input Voltage
5.0 1.2 0.8
V (Note 10)(Note 12)
Note 8: Maximum of 8 outputs loaded; thresholds on input associated with output under test.
Note 9: Maximum test duration 2.0 ms, one output loaded at a time.
Note 10: DIP package
Note 11: Max number of outputs defined as (n). (n1) Data Inputs are driven 0V to 3V, one output @ GND.
Note 12: Max number of Data Inputs (n) switching. (n1) Inputs switching 0V to 3V (ACTQ). Input-under-test switching: 3V to threshold (VILD),
0V to threshold (VIHD), f =1 MHz.
www.fairchildsemi.com
4

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74ACTQ543SPC 전자부품, 판매, 대치품
FACT Noise Characteristics
The setup of a noise characteristics measurement is critical
to the accuracy and repeatability of the tests. The following
is a brief description of the setup used to measure the
noise characteristics of FACT.
Equipment:
Hewlett Packard Model 8180A Word Generator
PC-163A Test Fixture
Tektronics Model 7854 Oscilloscope
Procedure:
1. Verify Test Fixture Loading: Standard Load 50 pF,
500.
2. Deskew the HFS generator so that no two channels
have greater than 150 ps skew between them. This
requires that the oscilloscope be deskewed first. It is
important to deskew the HFS generator channels
before testing. This will ensure that the outputs switch
simultaneously.
3. Terminate all inputs and outputs to ensure proper load-
ing of the outputs and that the input levels are at the
correct voltage.
4. Set the HFS generator to toggle all but one output at a
frequency of 1 MHz. Greater frequencies will increase
DUT heating and effect the results of the measure-
ment.
5. Set the HFS generator input levels at 0V LOW and 3V
HIGH for ACT devices and 0V LOW and 5V HIGH for
AC devices. Verify levels with an oscilloscope.
VOLP/VOLV and VOHP/VOHV:
Determine the quiet output pin that demonstrates the
greatest noise levels. The worst case pin will usually be
the furthest from the ground pin. Monitor the output volt-
ages using a 50coaxial cable plugged into a standard
SMB type connector on the test fixture. Do not use an
active FET probe.
Measure VOLP and VOLV on the quiet output during the
worst case transition for active and enable. Measure
VOHP and VOHV on the quiet output during the worst
case active and enable transition.
Verify that the GND reference recorded on the oscillo-
scope has not drifted to ensure the accuracy and repeat-
ability of the measurements.
VILD and VIHD:
Monitor one of the switching outputs using a 50coaxial
cable plugged into a standard SMB type connector on
the test fixture. Do not use an active FET probe.
First increase the input LOW voltage level, VIL, until the
output begins to oscillate or steps out a min of 2 ns.
Oscillation is defined as noise on the output LOW level
that exceeds VIL limits, or on output HIGH levels that
exceed VIH limits. The input LOW voltage level at which
oscillation occurs is defined as VILD.
Next decrease the input HIGH voltage level, VIH, until
the output begins to oscillate or steps out a min of 2 ns.
Oscillation is defined as noise on the output LOW level
that exceeds VIL limits, or on output HIGH levels that
exceed VIH limits. The input HIGH voltage level at which
oscillation occurs is defined as VIHD
Verify that the GND reference recorded on the oscillo-
scope has not drifted to ensure the accuracy and repeat-
ability on the measurements.
FIGURE 1. Quiet Output Noise Voltage Waveforms
Note 19: VOHVand VOLP are measured with respect to ground reference.
Note 20: Input pulses have the following characteristics: f = 1 MHz,
tr = 3 ns, tf = 3 ns, skew < 150 ps.
FIGURE 2. Simultaneous Switching Test Circuit
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부품번호상세설명 및 기능제조사
74ACTQ543SPC

Quiet Series Octal Registered Transceiver with 3-STATE Outputs

Fairchild Semiconductor
Fairchild Semiconductor

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