74ACTQ574SJX [FAIRCHILD]

Bus Driver, ACT Series, 1-Func, 8-Bit, True Output, CMOS, PDSO20, 5.30 MM, EIAJ TYPE2, SOP-20;
74ACTQ574SJX
型号: 74ACTQ574SJX
厂家: FAIRCHILD SEMICONDUCTOR    FAIRCHILD SEMICONDUCTOR
描述:

Bus Driver, ACT Series, 1-Func, 8-Bit, True Output, CMOS, PDSO20, 5.30 MM, EIAJ TYPE2, SOP-20

总线驱动器 总线收发器 触发器 逻辑集成电路 光电二极管
文件: 总10页 (文件大小:100K)
中文:  中文翻译
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January 1990  
Revised November 1999  
74ACQ574 74ACTQ574  
Quiet Series Octal D-Type Flip-Flop  
with 3-STATE Outputs  
General Description  
Features  
ICC and IOZ reduced by 50%  
The ACQ/ACTQ574 is a high-speed, low-power octal D-  
type flip-flop with a buffered Common Clock (CP) and a  
buffered common Output Enable (OE). The information  
presented to the D inputs is stored in the flip-flops on the  
LOW-to-HIGH clock (CP) transition.  
Guaranteed simultaneous switching noise level and  
dynamic threshold performance  
Guaranteed pin-to-pin skew AC performance  
Inputs and outputs on opposite sides of the package  
allowing easy interface with microprocessors  
ACQ/ACTQ574 utilizes FACT Quiet Series technology to  
guarantee quiet output switching and improve dynamic  
threshold performance. FACT Quiet Series features GTO  
output control and undershoot corrector in addition to a  
split ground bus for superior performance.  
Functionally identical to the ACQ/ACTQ374  
3-STATE outputs drive bus lines or buffer memory  
address registers  
The ACQ/ACTQ574 is functionally identical to the  
ACTQ374 but with different pin-out.  
Outputs source/sink 24 mA  
Faster prop delays than the standard AC/ACT574  
Ordering Code:  
Order Number Package Number  
Package Description  
74ACQ574SC  
74ACQ574SJ  
74ACQ574PC  
74ACTQ574SC  
74ACTQ574SJ  
74ACTQ574PC  
M20B  
M20D  
N20A  
M20B  
M20D  
N20A  
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300Wide Body  
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide  
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300Wide  
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300Wide Body  
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide  
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300Wide  
Device also available in Tape and Reel. Specify by appending suffix “X” to the ordering code.  
Connection Diagram  
Pin Descriptions  
Pin Names  
D0D7  
Description  
Data Inputs  
CP  
Clock Pulse Input  
OE  
3-STATE Output Enable Input  
3-STATE Outputs  
O0O7  
FACT , Quiet Series , FACT Quiet Series and GTO are trademarks of Fairchild Semiconductor Corporation.  
© 1999 Fairchild Semiconductor Corporation  
DS010634  
www.fairchildsemi.com  
Logic Symbols  
Functional Description  
The ACQ/ACTQ574 consists of eight edge-triggered flip-  
flops with individual D-type inputs and 3-STATE true out-  
puts. The buffered clock and buffered Output Enable are  
common to all flip-flops. The eight flip-flops will store the  
state of their individual D-type inputs that meet the setup  
and hold time requirements on the LOW-to-HIGH Clock  
(CP) transition. With the Output Enable (OE) LOW, the  
contents of the eight flip-flops are available at the outputs.  
When OE is HIGH, the outputs go to the high impedance  
state. Operation of the OE input does not affect the state of  
the flip-flops.  
IEEE/IEC  
Function Table  
Inputs  
OE CP  
Internal Outputs  
Function  
D
Q
ON  
H
H
H
H
L
H
H
L
H
L
NC  
NC  
L
Z
Z
Hold  
Hold  
Load  
Load  
Z
H
L
H
Z
L
L
Data Available  
L
H
L
H
H
Data Available  
L
H
H
NC  
NC  
NC  
NC  
No Change in Data  
No Change in Data  
L
H
H = HIGH Voltage Level  
L = LOW Voltage Level  
X = Immaterial  
Z = High Impedance  
= LOW-to-HIGH Transition  
NC = No Change  
Logic Diagram  
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.  
www.fairchildsemi.com  
2
Absolute Maximum Ratings(Note 1)  
Recommended Operating  
Conditions  
Supply Voltage (VCC  
)
0.5V to +7.0V  
DC Input Diode Current (IIK  
VI = −0.5V  
)
Supply Voltage (VCC  
)
20 mA  
+20 mA  
ACQ  
2.0V to 6.0V  
4.5V to 5.5V  
0V to VCC  
VI = VCC + 0.5V  
ACTQ  
DC Input Voltage (VI)  
0.5V to VCC + 0.5V  
Input Voltage (VI)  
Output Voltage (VO)  
DC Output Diode Current (IOK  
)
0V to VCC  
V
V
O = −0.5V  
20 mA  
+20 mA  
Operating Temperature (TA)  
Minimum Input Edge Rate V/t  
ACQ Devices  
40°C to +85°C  
O = VCC + 0.5V  
DC Output Voltage (VO)  
DC Output Source  
0.5V to VCC + 0.5V  
V
IN from 30% to 70% of VCC  
or Sink Current (IO)  
±50 mA  
VCC @ 3.0V, 4.5V, 5.5V  
Minimum Input Edge Rate V/t  
ACTQ Devices  
125 mV/ns  
125 mV/ns  
DC VCC or Ground Current  
per Output Pin (ICC or IGND  
)
±50 mA  
Storage Temperature (TSTG  
DC Latch-Up Source or  
Sink Current  
)
65°C to +150°C  
V
IN from 0.8V to 2.0V  
VCC @ 4.5V, 5.5V  
±300 mA  
140°C  
Note 1: Absolute maximum ratings are those values beyond which damage  
to the device may occur. The databook specifications should be met, with-  
out exception, to ensure that the system design is reliable over its power  
supply, temperature, and output/input loading variables. Fairchild does not  
recommend operation of FACT circuits outside databook specifications.  
Junction Temperature (TJ)  
PDIP  
DC Electrical Characteristics for ACQ  
VCC  
T
A = +25°C  
TA = −40°C to +85°C  
Symbol  
VIH  
Parameter  
Units  
Conditions  
(V)  
3.0  
4.5  
5.5  
3.0  
4.5  
5.5  
3.0  
4.5  
5.5  
Typ  
1.5  
Guaranteed Limits  
Minimum HIGH Level  
Input Voltage  
2.1  
2.1  
3.15  
3.85  
0.9  
V
OUT = 0.1V  
2.25  
2.75  
1.5  
3.15  
3.85  
0.9  
V
or VCC 0.1V  
VIL  
Maximum LOW Level  
Input Voltage  
V
OUT = 0.1V  
2.25  
2.75  
2.99  
4.49  
5.49  
1.35  
1.65  
2.9  
1.35  
1.65  
2.9  
V
V
or VCC 0.1V  
VOH  
Minimum HIGH Level  
Output Voltage  
4.4  
4.4  
IOUT = −50 µA  
5.4  
5.4  
VIN = VIL or VIH  
3.0  
4.5  
5.5  
3.0  
4.5  
5.5  
2.56  
3.86  
4.86  
0.1  
2.46  
3.76  
4.76  
0.1  
I
I
I
OH = −12 mA  
V
V
OH = −24 mA  
OH = −24 mA (Note 2)  
VOL  
Maximum LOW Level  
Output Voltage  
0.002  
0.001  
0.001  
0.1  
0.1  
I
OUT = 50 µA  
0.1  
0.1  
VIN = VIL or VIH  
3.0  
4.5  
5.5  
0.36  
0.36  
0.36  
0.44  
0.44  
0.44  
I
I
I
OL = 12 mA  
V
OL = 24 mA  
OL = 24 mA (Note 2)  
IIN  
Maximum Input  
5.5  
±0.1  
±1.0  
µA  
VI = VCC, GND  
(Note 4)  
IOLD  
Leakage Current  
Minimum Dynamic  
Output Current (Note 3)  
Maximum Quiescent  
Supply Current  
5.5  
5.5  
75  
mA  
mA  
VOLD = 1.65V Max  
VOHD = 3.85V Min  
VIN = VCC  
IOHD  
ICC  
75  
5.5  
4.0  
40.0  
µA  
(Note 4)  
IOZ  
or GND  
Maximum 3-STATE  
Leakage Current  
VI (OE) = VIL, VIH  
VI = VCC, GND  
5.5  
±0.25  
±2.5  
µA  
VO = VCC, GND  
3
www.fairchildsemi.com  
DC Electrical Characteristics for ACQ (Continued)  
VCC  
(V)  
T
A = +25°C  
T
A = −40°C to +85°C  
Symbol  
VOLP  
Parameter  
Quiet Output  
Units  
Conditions  
Typ  
Guaranteed Limits  
Figure 1, Figure 2  
(Note 5)(Note 6)  
Figure 1, Figure 2  
(Note 5)(Note 6)  
5.0  
5.0  
5.0  
5.0  
1.1  
0.6  
3.1  
1.5  
V
V
V
V
Maximum Dynamic VOL  
Quiet Output  
VOLV  
VIHD  
VILD  
1.2  
3.5  
Minimum Dynamic VOL  
Minimum HIGH Level  
Dynamic Input Voltage  
Maximum LOW Level  
Dynamic Input Voltage  
(Note 5)(Note 7)  
(Note 5)(Note 7)  
1.9  
1.5  
Note 2: All 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: DIP package.  
Note 6: Max number of outputs defined as (n). Data inputs are driven 0V to 5V. One output @ GND.  
Note 7: Maximum 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  
VCC  
T
A = +25°C  
TA = −40°C to +85°C  
Symbol  
VIH  
Parameter  
Units  
Conditions  
(V)  
4.5  
5.5  
4.5  
5.5  
4.5  
5.5  
Typ  
1.5  
Guaranteed Limits  
Minimum HIGH Level  
Input Voltage  
2.0  
2.0  
2.0  
0.8  
0.8  
4.4  
5.4  
V
OUT = 0.1V  
or VCC 0.1V  
OUT = 0.1V  
or VCC 0.1V  
V
V
V
1.5  
2.0  
0.8  
0.8  
4.4  
5.4  
VIL  
Maximum LOW Level  
Input Voltage  
1.5  
V
1.5  
VOH  
Minimum HIGH Level  
Output Voltage  
4.49  
5.49  
I
OUT = −50 µA  
IN = VIL or VIH  
V
4.5  
5.5  
4.5  
5.5  
3.85  
4.86  
0.1  
3.76  
4.76  
0.1  
V
V
V
I
I
OH= −24 mA  
OH= −24 mA (Note 8)  
VOL  
Maximum LOW Level  
Output Voltage  
0.001  
0.001  
I
OUT = 50 µA  
0.1  
0.1  
V
IN = VIL or VIH  
4.5  
5.5  
5.5  
0.36  
0.36  
±0.1  
0.44  
0.44  
±1.0  
I
I
OL = 24 mA  
OL = 24 mA (Note 8)  
IIN  
Maximum Input Leakage Current  
Maximum 3-STATE  
Leakage Current  
µA  
µA  
VI = VCC, GND  
VI = VIL, VIH  
IOZ  
5.5  
±0.25  
±2.5  
V
O = VCC, GND  
ICCT  
IOLD  
IOHD  
ICC  
Maximum ICC/Input  
Minimum Dynamic  
5.5  
5.5  
5.5  
0.6  
1.5  
75  
mA  
mA  
mA  
VI = VCC 2.1V  
VOLD = 1.65V Max  
VOHD = 3.85V Min  
VIN = VCC  
Output Current (Note 9)  
Maximum Quiescent  
Supply Current  
75  
5.5  
5.0  
5.0  
5.0  
5.0  
4.0  
1.5  
40.0  
µA  
V
or GND  
VOLP  
VOLV  
VIHD  
VILD  
Quiet Output  
Figure 1, Figure 2  
(Note 10)(Note 11)  
Figure 1, Figure 2  
(Note 10)(Note 11)  
1.1  
0.6  
1.9  
Maximum Dynamic VOL  
Quiet Output  
1.2  
2.2  
V
Minimum Dynamic VOL  
Minimum HIGH Level  
Dynamic Input Voltage  
Maximum LOW Level  
Dynamic Input Voltage  
V
(Note 10)(Note 12)  
(Note 10)(Note 12)  
1.2  
0.8  
V
Note 8: All 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). Data inputs are driven 0V to 3V. One output @ GND.  
www.fairchildsemi.com  
4
DC Electrical Characteristics for ACTQ (Continued)  
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.  
AC Electrical Characteristics for ACQ  
VCC  
T
A = +25°C  
T
A = −40°C to +85°C  
L = 50 pF  
Max  
C
L = 50 pF  
C
Symbol  
Parameter  
(V)  
(Note 13)  
3.3  
Units  
Min  
75  
Typ  
Max  
Min  
fMAX  
Maximum Clock  
70  
85  
MHz  
ns  
Frequency  
5.0  
90  
tPLH  
tPHL  
tPZH  
tPZL  
tPHZ  
tPLZ  
tOSHL  
tOSLH  
Propagation Delay  
CP to On  
3.3  
3.0  
2.0  
9.5  
6.5  
13.0  
8.5  
3.0  
2.0  
13.5  
9.0  
5.0  
Output Enable Time  
3.3  
5.0  
3.3  
5.0  
3.3  
5.0  
3.0  
2.0  
1.0  
1.0  
9.5  
6.5  
9.5  
8.0  
1.0  
0.5  
13.0  
8.5  
3.0  
2.0  
1.0  
1.0  
13.5  
9.0  
ns  
Output Disable Time  
14.5  
9.5  
15.0  
10.0  
1.5  
ns  
Output to Output Skew (Note 14)  
CP to On  
1.5  
ns  
1.0  
1.0  
Note 13: Voltage Range 5.0 is 5.0V ± 0.5V  
Voltage Range 3.3 is 3.3V ± 0.3V  
Note 14: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The  
specification applies to any outputs switching in the same direction, either HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH). Parameter guaranteed by design.  
AC Operating Requirements for ACQ  
VCC  
T
A = +25°C  
L = 50 pF  
T
A = −40°C to +85°C  
C
C
L = 50 pF  
Symbol  
Parameter  
(V)  
(Note 15)  
3.3  
Units  
Typ  
0
Guaranteed Minimum  
tS  
Setup Time, HIGH or LOW  
Dn to CP  
3.0  
3.0  
1.5  
1.5  
4.0  
4.0  
3.0  
3.0  
1.5  
1.5  
4.0  
4.0  
ns  
ns  
ns  
5.0  
0
tH  
Hold Time, HIGH or LOW  
3.3  
0
Dn to CP  
5.0  
0
tW  
CP Pulse Width,  
HIGH or LOW  
3.3  
2.0  
2.0  
5.0  
Note 15: Voltage Range 5.0 is 5.0V ± 0.5V  
Voltage Range 3.3 is 3.3V ± 0.3V  
AC Electrical Characteristics for ACTQ  
VCC  
T
A = +25°C  
T
A = −40°C to +85°C  
L = 50 pF  
Max  
C
L = 50 pF  
C
Symbol  
Parameter  
(V)  
(Note 16)  
5.0  
Units  
Min  
Typ  
Max  
Min  
fMAX  
tPLH  
tPHL  
tPZH  
tPZL  
tPHZ  
tPLZ  
tOSHL  
tOSLH  
Maximum Clock Frequency  
Propagation Delay  
85  
80  
MHz  
ns  
5.0  
5.0  
5.0  
5.0  
2.0  
2.0  
1.0  
7.0  
7.0  
8.0  
0.5  
9.0  
9.0  
2.0  
9.5  
9.5  
CP to On  
Output Enable  
2.0  
1.0  
ns  
ns  
ns  
Time  
Output Disable  
10.0  
1.0  
10.5  
1.0  
Time  
Output to Output Skew (Note 17)  
CP to On  
Note 16: Voltage Range 5.0 is 5.0V ± 0.5V.  
Note 17: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The  
specification applies to any outputs switching in the same direction, either HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH). Parameter guaranteed by design.  
5
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AC Operating Requirements for ACTQ  
VCC  
TA = +25°C  
TA = −40°C to +85°C  
CL = 50 pF  
CL = 50 pF  
Symbol  
Parameter  
(V)  
Units  
(Note 18)  
Typ  
Guaranteed Minimum  
tS  
Setup Time, HIGH or LOW  
Dn to CP  
5.0  
5.0  
5.0  
0
3.0  
1.5  
4.0  
3.0  
ns  
ns  
ns  
tH  
Hold Time, HIGH or LOW  
0
1.5  
4.0  
Dn to CP  
tW  
CP Pulse Width,  
HIGH or LOW  
2.0  
Note 18: Voltage Range 5.0 is 5.0V ± 0.5V  
Capacitance  
Symbol  
Parameter  
Typ  
Units  
Conditions  
CIN  
Input Capacitance  
4.5  
pF  
pF  
V
V
CC = OPEN  
CC = 5.0V  
CPD  
Power Dissipation Capacitance  
40.0  
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6
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.  
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.  
Equipment:  
Hewlett Packard Model 8180A Word Generator  
PC-163A Test Fixture  
Measure VOLP and VOLV on the quiet output during the  
Tektronics Model 7854 Oscilloscope  
Procedure:  
worst case for active and enable transition. Measure  
VOHP and VOHV on the quiet output during the worst  
1. Verify Test Fixture Loading: Standard Load 50 pF,  
case active and enable transition.  
500.  
Verify that the GND reference recorded on the oscillo-  
scope has not drifted to ensure the accuracy and repeat-  
ability of the measurements.  
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.  
V
ILD 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.  
3. Terminate all inputs and outputs to ensure proper load-  
ing of the outputs and that the input levels are at the  
correct voltage.  
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  
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.  
exceed VIH limits. The input LOW voltage level at which  
oscillation occurs is defined as VILD  
.
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.  
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 of the measurements.  
Note 19: VOHV and 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 1. Quiet Output Noise Voltage Waveforms  
FIGURE 2. Simultaneous Switching Test Circuit  
7
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Physical Dimensions inches (millimeters) unless otherwise noted  
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300Wide Body  
Package Number M20B  
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8
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)  
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide  
Package Number M20D  
9
www.fairchildsemi.com  
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)  
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300Wide  
Package Number N20A  
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and  
Fairchild reserves the right at any time without notice to change said circuitry and specifications.  
LIFE SUPPORT POLICY  
FAIRCHILDS PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT  
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD  
SEMICONDUCTOR CORPORATION. As used herein:  
1. Life support devices or systems are devices or systems  
which, (a) are intended for surgical implant into the  
body, or (b) support or sustain life, and (c) whose failure  
to perform when properly used in accordance with  
instructions for use provided in the labeling, can be rea-  
sonably expected to result in a significant injury to the  
user.  
2. A critical component in any component of a life support  
device or system whose failure to perform can be rea-  
sonably expected to cause the failure of the life support  
device or system, or to affect its safety or effectiveness.  
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10  

相关型号:

74ACTQ646

Quiet Series Octal Transceiver/Register with 3-STATE Outputs
ETC

74ACTQ646ASPC

Single 8-bit Bus Transceiver
ETC

74ACTQ646FC

ACT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, CDFP24, CERAMIC, FP-24
TI

74ACTQ646FCX

ACT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, CDFP24, CERAMIC, FP-24
TI

74ACTQ646LC

ACT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, CQCC28, CERAMIC, LCC-28
TI

74ACTQ646LCQR

ACT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, CQCC28, CERAMIC, LCC-28
TI

74ACTQ646PC

ACT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDIP24, PLASTIC, DIP-24
TI

74ACTQ646PCQR

ACT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDIP24, PLASTIC, DIP-24
TI

74ACTQ646QC

暂无描述
TI

74ACTQ646QCQR

ACT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PQCC28, PLASTIC, LCC-28
TI

74ACTQ646QCX

ACT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PQCC28, PLASTIC, LCC-28
TI

74ACTQ646SC

Quiet Series⑩ Octal Transceiver/Register with 3-STATE Outputs
FAIRCHILD