SN74LVTH652IPWREP [TI]

Enhanced Product 3.3-V Abt Octal Bus Transceivers And Registers With 3-State Outputs 24-TSSOP -40 to 85;
SN74LVTH652IPWREP
型号: SN74LVTH652IPWREP
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

Enhanced Product 3.3-V Abt Octal Bus Transceivers And Registers With 3-State Outputs 24-TSSOP -40 to 85

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SN54LVTH652, SN74LVTH652  
3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS  
WITH 3-STATE OUTPUTS  
SCBS706D – AUGUST 1997 – REVISED APRIL 1999  
SN54LVTH652 . . . JT OR W PACKAGE  
SN74LVTH652 . . . DB, DGV, DW, OR PW PACKAGE  
(TOP VIEW)  
State-of-the-Art Advanced BiCMOS  
Technology (ABT) Design for 3.3-V  
Operation and Low Static-Power  
Dissipation  
1
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
CLKAB  
SAB  
OEAB  
A1  
V
CC  
I
and Power-Up 3-State Support Hot  
2
off  
CLKBA  
SBA  
OEBA  
B1  
Insertion  
3
Bus Hold on Data Inputs Eliminates the  
Need for External Pullup/Pulldown  
Resistors  
4
5
A2  
6
A3  
B2  
7
A4  
B3  
Support Mixed-Mode Signal Operation  
(5-V Input and Output Voltages With  
8
A5  
B4  
9
A6  
B5  
3.3-V V  
)
CC  
10  
11  
12  
A7  
A8  
GND  
B6  
B7  
B8  
Support Unregulated Battery Operation  
Down to 2.7 V  
Typical V  
< 0.8 V at V  
(Output Ground Bounce)  
OLP  
= 3.3 V, T = 25°C  
CC  
A
SN54LVTH652 . . . FK PACKAGE  
(TOP VIEW)  
Latch-Up Performance Exceeds 500 mA Per  
JESD 17  
ESD Protection Exceeds 2000 V Per  
MIL-STD-883, Method 3015; Exceeds 200 V  
Using Machine Model (C = 200 pF, R = 0)  
4
3
2
1
28 27 26  
25  
Package Options Include Plastic  
5
6
7
8
9
A1  
A2  
A3  
NC  
A4  
A5  
A6  
OEBA  
B1  
B2  
NC  
B3  
B4  
Small-Outline (DW), Shrink Small-Outline  
(DB), Thin Shrink Small-Outline (PW), and  
Thin Very Small-Outline (DGV) Packages,  
Ceramic Chip Carriers (FK), Ceramic Flat  
(W) Package, and Ceramic (JT) DIPs  
24  
23  
22  
21  
20  
19  
10  
11  
B5  
description  
12 13 14 15 16 17 18  
These bus transceivers and registers are  
designed specifically for low-voltage (3.3-V) V  
CC  
operation, but with the capability to provide a TTL  
interface to a 5-V system environment.  
NC – No internal connection  
The ’LVTH652 devices consist of bus-transceiver circuits, D-type flip-flops, and control circuitry arranged for  
multiplexed transmission of data directly from the data bus or from the internal storage registers.  
Output-enable (OEAB and OEBA) inputs are provided to control the transceiver functions. Select-control (SAB  
and SBA) inputs are provided to select whether real-time or stored data is transferred. The circuitry used for  
select control eliminates the typical decoding glitch that occurs in a multiplexer during the transition between  
real-time and stored data. A low input selects real-time data and a high input selects stored data. Figure 1  
illustrates the four fundamental bus-management functions that can be performed with the ’LVTH652 devices.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
Copyright 1999, Texas Instruments Incorporated  
UNLESS OTHERWISE NOTED this document contains PRODUCTION  
DATA information current as of publication date. Products conform to  
specifications per the terms of Texas Instruments standard warranty.  
Production processing does not necessarily include testing of all  
parameters.  
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54LVTH652, SN74LVTH652  
3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS  
WITH 3-STATE OUTPUTS  
SCBS706D – AUGUST 1997 – REVISED APRIL 1999  
description (continued)  
Data on the A or B data bus, or both, can be stored in the internal D-type flip-flops by low-to-high transitions at  
the appropriate clock (CLKAB or CLKBA) inputs, regardless of the select- or enable-control pins. When SAB  
and SBA are in the real-time transfer mode, it is possible to store data without using the internal D-type flip-flops  
by simultaneously enabling OEAB and OEBA. In this configuration, each output reinforces its input; therefore,  
when all other data sources to the two sets of bus lines are at high impedance, each set of bus lines remains  
at its last state.  
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.  
When V  
is between 0 and 1.5 V, the device is in the high-impedance state during power up or power down.  
CC  
However, to ensure the high-impedance state above 1.5 V, OE should be tied to V  
through a pullup resistor  
CC  
and OE should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by  
the current-sinking/current-sourcing capability of the driver.  
This device is fully specified for hot-insertion applications using I and power-up 3-state. The I circuitry  
off  
off  
disables the outputs, preventing damaging current backflow through the device when it is powered down. The  
power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down,  
which prevents driver conflict.  
The SN54LVTH652 is characterized for operation over the full military temperature range of –55°C to 125°C.  
The SN74LVTH652 is characterized for operation from –40°C to 85°C.  
FUNCTION TABLE  
DATA I/O  
INPUTS  
OPERATION OR FUNCTION  
OEAB  
OEBA  
CLKAB  
CLKBA  
SAB  
X
SBA  
X
A1–A8  
Input  
B1–B8  
Input  
L
L
H
H
H
H
X
L
H or L  
H or L  
Isolation  
X
X
Input  
Input  
Store A and B data  
X
H
L
H or L  
X
X
Input  
Unspecified  
Output  
Input  
Store A, hold B  
X
X
Input  
Store A in both registers  
Hold A, store B  
H or L  
X
X
Unspecified  
Output  
Output  
Output  
Input  
X
L
X
X
X
X
X
L
Input  
Store B in both registers  
Real-time B data to A bus  
Stored B data to A bus  
Real-time A data to B bus  
Stored A data to B bus  
L
L
L
Input  
L
L
X
H or L  
X
H
X
X
Input  
H
H
H
H
X
Output  
Output  
H or L  
X
H
Input  
Stored A data to B bus and  
stored B data to A bus  
H
L
H or L  
H or L  
H
H
Output  
Output  
The data-output functions can be enabled or disabled by a variety of level combinations at OEAB or OEBA. Data-input functions always are  
enabled; i.e., data at the bus terminals is stored on every low-to-high transition of the clock inputs.  
Select control = L; clocks can occur simultaneously.  
Select control = H; clocks must be staggered to load both registers.  
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54LVTH652, SN74LVTH652  
3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS  
WITH 3-STATE OUTPUTS  
SCBS706D – AUGUST 1997 – REVISED APRIL 1999  
3
21  
1
23  
2
22  
SBA  
L
3
21  
1
23  
2
22  
SBA  
X
CLKAB CLKBA SAB  
CLKAB CLKBA SAB  
OEABOEBA  
L
OEABOEBA  
H
L
X
X
X
H
X
X
L
REAL-TIME TRANSFER  
BUS B TO BUS A  
REAL-TIME TRANSFER  
BUS A TO BUS B  
3
21  
23  
2
22  
3
21  
1
23  
2
22  
SBA  
H
1
CLKAB CLKBA SAB  
SBA  
X
CLKAB CLKBA SAB  
OEAB OEBA  
OEAB OEBA  
H
X
L
L
H
X
H
X
X
X
X
L
H or L  
H or L  
H
X
X
TRANSFER STORED DATA  
TO A AND/OR B  
X
STORAGE FROM  
A, B, OR A AND B  
Pin numbers shown are for the DB, DGV, DW, JT, PW, and W packages.  
Figure 1. Bus-Management Functions  
3
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54LVTH652, SN74LVTH652  
3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS  
WITH 3-STATE OUTPUTS  
SCBS706D – AUGUST 1997 – REVISED APRIL 1999  
logic symbol  
21  
OEBA  
EN1 [BA]  
EN2 [AB]  
3
OEAB  
CLKBA  
SBA  
23  
22  
1
C4  
G5  
CLKAB  
SAB  
C6  
G7  
2
20  
4D  
2
B1  
5
5
1  
4
A1  
1
1
1  
6D  
7
7
1
5
19  
18  
17  
16  
15  
14  
13  
A2  
A3  
A4  
A5  
A6  
A7  
A8  
B2  
B3  
B4  
B5  
B6  
B7  
B8  
6
7
8
9
10  
11  
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.  
Pin numbers shown are for the DB, DGV, DW, JT, PW, and W packages.  
4
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54LVTH652, SN74LVTH652  
3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS  
WITH 3-STATE OUTPUTS  
SCBS706D – AUGUST 1997 – REVISED APRIL 1999  
logic diagram (positive logic)  
21  
OEBA  
3
OEAB  
23  
CLKBA  
22  
SBA  
1
CLKAB  
2
SAB  
One of Eight Channels  
1D  
C1  
4
A1  
20  
B1  
1D  
C1  
To Seven Other Channels  
Pin numbers shown are for the DB, DGV, DW, JT, PW, and W packages.  
5
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54LVTH652, SN74LVTH652  
3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS  
WITH 3-STATE OUTPUTS  
SCBS706D – AUGUST 1997 – REVISED APRIL 1999  
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)  
Supply voltage range, V  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 4.6 V  
CC  
Input voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V  
I
Voltage range applied to any output in the high-impedance  
or power-off state, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V  
O
Voltage range applied to any output in the high state, V (see Note 1) . . . . . . . . . . . . . –0.5 V to V  
+ 0.5 V  
O
CC  
Current into any output in the low state, I : SN54LVTH652 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA  
O
SN74LVTH652 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA  
Current into any output in the high state, I (see Note 2): SN54LVTH652 . . . . . . . . . . . . . . . . . . . . . . . . 48 mA  
O
SN74LVTH652 . . . . . . . . . . . . . . . . . . . . . . . . 64 mA  
Input clamp current, I (V < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA  
IK  
OK  
I
Output clamp current, I  
(V < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA  
O
Package thermal impedance, θ (see Note 3): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104°C/W  
JA  
DGV package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139°C/W  
DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81°C/W  
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120°C/W  
Storage temperature range, T  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C  
stg  
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and  
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not  
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.  
NOTES: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.  
2. This current flows only when the output is in the high state and V > V  
.
CC  
O
3. The package thermal impedance is calculated in accordance with JESD 51.  
recommended operating conditions (see Note 4)  
SN54LVTH652 SN74LVTH652  
UNIT  
MIN  
2.7  
2
MAX  
MIN  
2.7  
2
MAX  
V
V
V
V
Supply voltage  
3.6  
3.6  
V
V
CC  
High-level input voltage  
Low-level input voltage  
Input voltage  
IH  
0.8  
5.5  
–24  
48  
0.8  
5.5  
–32  
64  
V
IL  
V
I
I
I
High-level output current  
Low-level output current  
Input transition rise or fall rate  
Power-up ramp rate  
mA  
mA  
ns/V  
µs/V  
°C  
OH  
OL  
t/v  
t/V  
Outputs enabled  
10  
10  
200  
–55  
200  
–40  
CC  
T
A
Operating free-air temperature  
125  
85  
NOTE 4: All unused control inputs of the device must be held at V  
or GND to ensure proper device operation. Refer to the TI application report,  
CC  
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.  
PRODUCT PREVIEW information concerns products in the formative or  
design phase of development. Characteristic data and other  
specifications are design goals. Texas Instruments reserves the right to  
change or discontinue these products without notice.  
6
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54LVTH652, SN74LVTH652  
3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS  
WITH 3-STATE OUTPUTS  
SCBS706D – AUGUST 1997 – REVISED APRIL 1999  
electrical characteristics over recommended operating free-air temperature range (unless  
otherwise noted)  
SN54LVTH652  
SN74LVTH652  
PARAMETER  
TEST CONDITIONS  
UNIT  
MIN TYP  
MAX  
MIN TYP  
MAX  
V
V
V
V
V
= 2.7 V,  
I = –18 mA  
–1.2  
–1.2  
V
IK  
CC  
CC  
CC  
I
= 2.7 V to 3.6 V,  
= 2.7 V,  
I
I
I
I
I
I
I
I
I
I
= –100 µA  
= –8 mA  
= –24 mA  
= –32 mA  
= 100 µA  
= 24 mA  
= 16 mA  
= 32 mA  
= 48 mA  
= 64 mA  
V
–0.2  
V
–0.2  
OH  
OH  
OH  
OH  
OL  
OL  
OL  
OL  
OL  
OL  
CC  
2.4  
CC  
2.4  
V
V
OH  
2
V
= 3 V  
CC  
CC  
2
0.2  
0.5  
0.2  
0.5  
0.4  
0.5  
V
= 2.7 V  
0.4  
V
OL  
0.5  
V
CC  
= 3 V  
0.55  
0.55  
±1  
V
V
= 3.6 V,  
V = V  
I
or GND  
±1  
10  
20  
1
CC  
CC  
Control inputs  
= 0 or 3.6 V,  
V = 5.5 V  
I
10  
CC  
I
I
V = 5.5 V  
I
20  
µA  
V = V  
I
1
A or B ports  
V
CC  
= 3.6 V  
CC  
V = 0  
I
–5  
–5  
I
I
V
V
= 0,  
V or V = 0 to 4.5 V  
±100  
µA  
µA  
off  
CC  
I
O
V = 0.8 V  
I
75  
75  
= 3 V  
CC  
A or B ports  
V = 2 V  
I
–75  
–75  
I(hold)  
§
V
V
= 3.6 V  
V = 0 to 3.6 V  
I
±500  
±100  
CC  
= 0 to 1.5 V, V = 0.5 to 3 V,  
OE/OE = don’t care  
CC  
O
I
I
±100  
±100  
µA  
µA  
OZPU  
V
= 1.5 V to 0, V = 0.5 to 3 V,  
CC  
OE/OE = don’t care  
O
±100  
OZPD  
Outputs high  
Outputs low  
0.19  
5
0.19  
5
V
= 3.6 V, I = 0,  
O
CC  
V = V  
I
mA  
CC  
or GND  
CC  
I
Outputs disabled  
0.19  
0.19  
V
= 3 V to 3.6 V, One input at V – 0.6 V,  
CC  
CC  
Other inputs at V  
0.2  
0.2  
mA  
I  
CC  
or GND  
CC  
C
C
V = 3 V or 0  
4
9
4
9
pF  
pF  
i
I
V
O
= 3 V or 0  
io  
On products compliant to MIL-PRF-38535, this parameter is not production tested.  
§
All typical values are at V  
= 3.3 V, T = 25°C.  
CC A  
or GND  
Unused terminals at V  
CC  
This is the bus-hold maximum dynamic current. It is the minimum overdrive current required to switch the input from one state to another.  
This is the increase in supply current for each input that is at the specified TTL voltage level rather than V or GND.  
CC  
PRODUCT PREVIEW information concerns products in the formative or  
design phase of development. Characteristic data and other  
specifications are design goals. Texas Instruments reserves the right to  
change or discontinue these products without notice.  
7
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54LVTH652, SN74LVTH652  
3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS  
WITH 3-STATE OUTPUTS  
SCBS706D – AUGUST 1997 – REVISED APRIL 1999  
timing requirements over recommended operating free-air temperature range (unless otherwise  
noted) (see Figure 2)  
SN54LVTH652  
= 3.3 V  
SN74LVTH652  
= 3.3 V  
V
CC  
V
CC  
V
= 2.7 V  
V
= 2.7 V  
UNIT  
CC  
CC  
± 0.3 V  
± 0.3 V  
MIN  
MAX  
MIN  
MAX  
MIN  
MAX  
MIN  
MAX  
f
t
Clock frequency  
150  
150  
150  
150  
MHz  
ns  
clock  
Pulse duration, CLK high or low  
3.3  
1.3  
1.9  
1.2  
3.3  
1.6  
2.6  
1.2  
3.3  
1.2  
1.6  
0.8  
3.3  
1.5  
2.2  
0.8  
w
Data high  
Data low  
Setup time,  
A or B before CLKABor CLKBA↑  
t
ns  
ns  
su  
h
t
Hold time, A or B after CLKABor CLKBA↑  
switching characteristics over recommended operating free-air temperature range, C = 50 pF  
L
(unless otherwise noted) (see Figure 2)  
SN54LVTH652  
= 3.3 V  
SN74LVTH652  
FROM  
(INPUT)  
TO  
(OUTPUT)  
V
V
= 3.3 V  
V
CC  
CC  
V
CC  
= 2.7 V  
= 2.7 V  
MAX  
PARAMETER  
UNIT  
CC  
± 0.3 V  
± 0.3 V  
MIN  
150  
1.7  
1.7  
1.2  
1.2  
1.4  
1.4  
1
MAX  
MIN  
MAX  
MIN TYP  
MAX  
MIN  
f
t
t
t
t
t
t
t
t
t
t
t
t
t
t
150  
150  
150  
MHz  
ns  
max  
PLH  
PHL  
PLH  
PHL  
PLH  
PHL  
PZH  
PZL  
PHZ  
PLZ  
PZH  
PZL  
PHZ  
PLZ  
5
5
5.9  
5.9  
4.3  
4.3  
6.3  
6.3  
6.7  
6.7  
6.5  
6.3  
5.9  
5.9  
7
1.8  
1.8  
1.3  
1.3  
1.5  
1.5  
1.1  
1.1  
2.3  
2.3  
1.3  
1.3  
1.5  
1.5  
3.1  
3.1  
2.3  
2.4  
3.1  
3.4  
2.9  
3.1  
3.5  
3.7  
3
4.7  
4.7  
3.5  
3.5  
4.9  
4.9  
5.2  
5.2  
5.5  
5.5  
4.7  
4.7  
5.6  
5.6  
5.6  
5.6  
4.1  
4.1  
6
CLKBA or  
CLKAB  
A or B  
3.7  
3.7  
5.2  
5.2  
5.4  
5.4  
5.9  
5.9  
4.9  
4.9  
5.8  
5.9  
A or B  
SBA or SAB  
OEBA  
B or A  
ns  
ns  
ns  
ns  
ns  
ns  
A or B  
6
6.5  
6.5  
6.1  
5.9  
5.7  
5.7  
6.7  
6.3  
A
A
B
B
1
2.2  
2.2  
1.2  
1.2  
1.4  
1.4  
OEBA  
OEAB  
3.3  
3.6  
3.7  
OEAB  
6.6  
All typical values are at V  
= 3.3 V, T = 25°C.  
A
CC  
These parameters are measured with the internal output state of the storage register opposite that of the bus input.  
PRODUCT PREVIEW information concerns products in the formative or  
design phase of development. Characteristic data and other  
specifications are design goals. Texas Instruments reserves the right to  
change or discontinue these products without notice.  
8
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54LVTH652, SN74LVTH652  
3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS  
WITH 3-STATE OUTPUTS  
SCBS706D – AUGUST 1997 – REVISED APRIL 1999  
PARAMETER MEASUREMENT INFORMATION  
6 V  
S1  
TEST  
/t  
S1  
Open  
GND  
500 Ω  
From Output  
Under Test  
t
Open  
6 V  
PLH PHL  
t
/t  
PLZ PZL  
C
= 50 pF  
L
t
/t  
GND  
500 Ω  
PHZ PZH  
(see Note A)  
2.7 V  
0 V  
LOAD CIRCUIT  
1.5 V  
Timing Input  
Data Input  
t
w
t
t
h
su  
2.7 V  
0 V  
2.7 V  
0 V  
Input  
1.5 V  
1.5 V  
1.5 V  
1.5 V  
VOLTAGE WAVEFORMS  
PULSE DURATION  
VOLTAGE WAVEFORMS  
SETUP AND HOLD TIMES  
2.7 V  
0 V  
2.7 V  
Output  
Control  
1.5 V  
1.5 V  
1.5 V  
1.5 V  
Input  
0 V  
V
t
t
t
t
t
PLZ  
PLH  
PHL  
PZL  
Output  
Waveform 1  
S1 at 6 V  
3 V  
OH  
1.5 V  
1.5 V  
1.5 V  
1.5 V  
Output  
V
V
+ 0.3 V  
OL  
V
OL  
(see Note B)  
V
OL  
t
t
t
PHL  
PLH  
PZH  
PHZ  
Output  
Waveform 2  
S1 at GND  
V
OH  
V
V
OH  
– 0.3 V  
OH  
1.5 V  
1.5 V  
Output  
0 V  
(see Note B)  
OL  
VOLTAGE WAVEFORMS  
PROPAGATION DELAY TIMES  
INVERTING AND NONINVERTING OUTPUTS  
VOLTAGE WAVEFORMS  
ENABLE AND DISABLE TIMES  
LOW- AND HIGH-LEVEL ENABLING  
NOTES: A.  
C includes probe and jig capacitance.  
L
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.  
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.  
C. All input pulses are supplied by generators having the following characteristics: PRR 10 MHz, Z = 50 , t 2.5 ns, t 2.5 ns.  
O
r
f
D. The outputs are measured one at a time with one transition per measurement.  
Figure 2. Load Circuit and Voltage Waveforms  
9
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
IMPORTANT NOTICE  
Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue  
any product or service without notice, and advise customers to obtain the latest version of relevant information  
to verify, before placing orders, that information being relied on is current and complete. All products are sold  
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those  
pertaining to warranty, patent infringement, and limitation of liability.  
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in  
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent  
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily  
performed, except those mandated by government requirements.  
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF  
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL  
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR  
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER  
CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO  
BE FULLY AT THE CUSTOMER’S RISK.  
In order to minimize risks associated with the customer’s applications, adequate design and operating  
safeguards must be provided by the customer to minimize inherent or procedural hazards.  
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent  
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other  
intellectual property right of TI covering or relating to any combination, machine, or process in which such  
semiconductor products or services might be or are used. TI’s publication of information regarding any third  
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.  
Copyright 1999, Texas Instruments Incorporated  

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