SNJ54ACT240W [TI]
OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS; 八路缓冲器/驱动器，具有三态输出
| 型号： | SNJ54ACT240W |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS |
| 文件： | 总6页 (文件大小：100K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN54ACT240, SN74ACT240
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS515C – JUNE 1995 – REVISED OCTOBER 2002
4.5-V to 5.5-V V
Operation
Max t of 8.5 ns at 5 V
pd
CC
Inputs Accept Voltages to 5.5 V
Inputs Are TTL Compatible
SN54ACT240 . . . J OR W PACKAGE
SN74ACT240 . . . DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
SN54ACT240 . . . FK PACKAGE
(TOP VIEW)
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
V
CC
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
2OE
1Y1
2A4
1Y2
2A3
1Y3
3
2
1
20 19
18
4
5
6
7
8
1Y1
2A4
1Y2
2A3
1Y3
1A2
2Y3
1A3
2Y2
1A4
17
16
15
14
9 10 11 12 13
13 2A2
12
11
1Y4
2A1
description/ordering information
These octal buffers and line drivers are designed specifically to improve the performance and density of 3-state
memory address drivers, clock drivers, and bus-oriented receivers and transmitters.
The ’ACT240 devices are organized as two 4-bit buffers/drivers with separate output-enable (OE) inputs. When
OE is low, the device passes inverted data from the A inputs to the Y outputs. When OE is high, the outputs are
in the high-impedance state.
To ensure the high-impedance state during power up or power down, OE should be tied to V through a pullup
CC
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
PDIP – N
Tube
SN74ACT240N
SN74ACT240N
Tube
SN74ACT240DW
SN74ACT240DWR
SN74ACT240NSR
SN74ACT240DBR
SN74ACT240PWR
SNJ54ACT240J
SOIC – DW
ACT240
Tape and reel
Tape and reel
Tape and reel
Tape and reel
Tube
–40°C to 85°C
SOP – NS
SSOP – DB
TSSOP – PW
CDIP – J
ACT240
AD240
AD240
SNJ54ACT240J
SNJ54ACT240W
SNJ54ACT240FK
–55°C to 125°C
CFP – W
Tube
SNJ54ACT240W
SNJ54ACT240FK
LCCC – FK
Tube
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
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 2002, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
PRODUCTION DATA information is 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
SN54ACT240, SN74ACT240
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS515C – JUNE 1995 – REVISED OCTOBER 2002
FUNCTION TABLE
(each buffer)
INPUTS
OUTPUT
Y
A
OE
L
H
L
L
H
Z
L
H
X
logic diagram (positive logic)
19
1
1OE
2OE
9
7
18
16
11
13
15
17
2
2Y1
2Y2
1Y1
1Y2
2A1
2A2
1A1
4
1A2
5
3
14
12
6
2Y3
2Y4
1Y3
1Y4
2A3
2A4
1A3
8
1A4
†
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
CC
Input voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
+ 0.5 V
+ 0.5 V
I
CC
CC
Output voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
O
Input clamp current, I (V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
IK
I
I
CC
Output clamp current, I
(V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
OK
O O CC
Continuous output current, I (V = 0 to V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Continuous current through V
Package thermal impedance, θ (see Note 2): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70°C/W
O
O
CC
CC
or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±200 mA
JA
DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69°C/W
NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83°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 voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ACT240, SN74ACT240
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS515C – JUNE 1995 – REVISED OCTOBER 2002
recommended operating conditions (see Note 3)
SN54ACT240 SN74ACT240
UNIT
MIN
4.5
2
MAX
MIN
4.5
2
MAX
V
V
V
V
V
Supply voltage
5.5
5.5
V
V
CC
IH
IL
High-level input voltage
Low-level input voltage
Input voltage
0.8
0.8
V
0
0
V
V
0
0
V
V
V
I
CC
CC
Output voltage
V
O
CC
CC
I
High-level output current
Low-level output current
Input transition rise or fall rate
Operating free-air temperature
–24
24
–24
24
8
mA
mA
ns/V
°C
OH
OL
I
∆t/∆v
8
T
–55
125
–40
85
A
NOTE 3: All unused 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.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
T
A
= 25°C
TYP
SN54ACT240 SN74ACT240
PARAMETER
TEST CONDITIONS
V
UNIT
CC
MIN
4.4
MAX
MIN
4.4
MAX
MIN
4.4
MAX
4.5 V
5.5 V
4.5 V
5.5 V
5.5 V
5.5 V
4.5 V
5.5 V
4.5 V
5.5 V
5.5 V
5.5 V
5.5 V
5.5 V
5.5 V
4.49
I
I
= –50 µA
OH
5.4
5.49
5.4
5.4
3.86
4.86
3.7
3.76
4.76
V
OH
= –24 mA
V
OH
4.7
†
†
I
I
= –50 mA
= –75 mA
3.85
OH
3.85
OH
0.001
0.001
0.1
0.1
0.1
0.1
0.1
0.1
I
= 50 µA
OL
OL
0.36
0.36
0.5
0.44
0.44
V
I
I
= 24 mA
V
OL
0.5
†
†
I
I
= 50 mA
1.65
OL
= 75 mA
1.65
±2.5
±1
OL
V
= V
or GND
CC
±0.25
±0.1
4
±5
±1
80
µA
µA
µA
O
OZ
I
I
V = V
or GND
or GND,
I
CC
CC
I
V = V
I = 0
O
40
CC
I
One input at 3.4 V,
Other inputs at GND or V
‡
∆I
CC
5.5 V
0.6
1.6
1.5
mA
CC
C
C
V = V
or GND
or GND
5 V
5 V
2.5
8
pF
pF
i
I
CC
CC
V = V
I
o
†
‡
Not more than one output should be tested at a time, and the duration of the test should not exceed 2 ms.
This is the increase in supply current for each input that is at one of the specified TTL voltage levels, rather than 0 V or V
.
CC
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ACT240, SN74ACT240
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS515C – JUNE 1995 – REVISED OCTOBER 2002
switching characteristics over recommended operating free-air temperature range,
V
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
CC
T = 25°C
A
SN54ACT240 SN74ACT240
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
UNIT
ns
MIN
1.5
1.5
1.5
2
TYP
6
MAX
8.5
7.5
8.5
9.5
9.5
10
MIN
1
MAX
9.5
9
MIN
1.5
1.5
1
MAX
9.5
t
t
PLH
PHL
PZH
A
Y
Y
Y
5.5
7
1
8.5
t
1
10
9.5
ns
OE
OE
t
7
1
11.5
11
1.5
2
10.5
10.5
10.5
PZL
t
2
8
1
PHZ
ns
t
2.5
6.5
1
11.5
2
PLZ
operating characteristics, V
= 5 V, T = 25°C
A
CC
PARAMETER
TEST CONDITIONS
TYP
UNIT
C
Power dissipation capacitance per buffer/driver
C
= 50 pF,
L
f = 1 MHz
45
pF
pd
PARAMETER MEASUREMENT INFORMATION
2 × V
CC
Open
S1
TEST
/t
S1
500 Ω
From Output
Under Test
t
Open
PLH PHL
t
/t
2 × V
CC
Open
PLZ PZL
C
= 50 pF
L
t
/t
500 Ω
PHZ PZH
(see Note A)
LOAD CIRCUIT
Output
Control
(low-level
enabling)
3 V
0 V
1.5 V
1.5 V
t
t
PZL
PLZ
3 V
0 V
Output
Waveform 1
≈V
CC
Input
1.5 V
1.5 V
50% V
CC
V
V
+ 0.3 V
S1 at 2 × V
(see Note B)
OL
CC
V
OL
t
t
PHL
PLH
t
t
PZH
PHZ
Output
Waveform 2
S1 at Open
(see Note B)
V
OH
V
OH
– 0.3 V
OH
50% V
50% V
Output
50% V
CC
CC
CC
V
≈0 V
OL
VOLTAGE WAVEFORMS
VOLTAGE WAVEFORMS
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 ≤ 1 MHz, Z = 50 Ω, t ≤ 2.5 ns, t ≤ 2.5 ns.
O
r
f
D. The outputs are measured one at a time with one input transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PACKAGE OPTION ADDENDUM
www.ti.com
4-Mar-2005
PACKAGING INFORMATION
Orderable Device
Status (1)
Package Package
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
Qty
Type
LCCC
CDIP
CFP
Drawing
5962-8775901M2A
5962-8775901MRA
5962-8775901MSA
SN74ACT240DBLE
SN74ACT240DBR
ACTIVE
ACTIVE
FK
J
20
20
20
20
20
1
1
1
None
None
None
None
Call TI
Call TI
Call TI
Call TI
Level-NC-NC-NC
Level-NC-NC-NC
Level-NC-NC-NC
Call TI
ACTIVE
W
OBSOLETE
ACTIVE
SSOP
SSOP
DB
DB
2000
25
Pb-Free
(RoHS)
CU NIPDAU Level-2-260C-1 YEAR/
Level-1-235C-UNLIM
SN74ACT240DW
SN74ACT240DWR
SN74ACT240N
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
SOIC
SOIC
PDIP
SO
DW
DW
N
20
20
20
20
20
Pb-Free
(RoHS)
CU NIPDAU Level-2-250C-1 YEAR/
Level-1-235C-UNLIM
2000
20
Pb-Free
(RoHS)
CU NIPDAU Level-2-250C-1 YEAR/
Level-1-235C-UNLIM
Pb-Free
(RoHS)
CU NIPDAU Level-NC-NC-NC
SN74ACT240NSR
SN74ACT240PW
NS
PW
2000
70
Pb-Free
(RoHS)
CU NIPDAU Level-2-260C-1 YEAR/
Level-1-235C-UNLIM
TSSOP
Pb-Free
(RoHS)
CU NIPDAU Level-1-250C-UNLIM
SN74ACT240PWLE
SN74ACT240PWR
OBSOLETE TSSOP
PW
PW
20
20
None
Call TI
Call TI
ACTIVE
TSSOP
2000
Pb-Free
(RoHS)
CU NIPDAU Level-1-250C-UNLIM
SNJ54ACT240FK
SNJ54ACT240J
SNJ54ACT240W
ACTIVE
ACTIVE
ACTIVE
LCCC
CDIP
CFP
FK
J
20
20
20
1
1
1
None
None
None
Call TI
Call TI
Call TI
Level-NC-NC-NC
Level-NC-NC-NC
Level-NC-NC-NC
W
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - May not be currently available - please check http://www.ti.com/productcontent for the latest availability information and additional
product content details.
None: Not yet available Lead (Pb-Free).
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean "Pb-Free" and in addition, uses package materials that do not contain halogens,
including bromine (Br) or antimony (Sb) above 0.1% of total product weight.
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDECindustry standard classifications, and peak solder
temperature.
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accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
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information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
Addendum-Page 1
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