SN74ABT2241 [TI]
OCTAL BUFFERS AND LINE/MOS DRIVERS WITH 3-STATE OUTPUTS; 八路缓冲器和线路/ MOS具有三态输出驱动程序
| 型号： | SN74ABT2241 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | OCTAL BUFFERS AND LINE/MOS DRIVERS WITH 3-STATE OUTPUTS |
| 文件： | 总7页 (文件大小：118K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN54ABT2241, SN74ABT2241
OCTAL BUFFERS AND LINE/MOS DRIVERS
WITH 3-STATE OUTPUTS
SCBS233B – JANUARY 1991 – REVISED JANUARY 1997
SN54ABT2241 . . . J PACKAGE
SN74ABT2241 . . . DB, DW, N, OR PW PACKAGE
(TOP VIEW)
Output Ports Have Equivalent 25-Ω Series
Resistors, So No External Resistors Are
Required
State-of-the-Art EPIC-ΙΙB BiCMOS Design
Significantly Reduces Power Dissipation
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
Typical V
< 1 V at V
(Output Ground Bounce)
OLP
CC
= 5 V, T = 25°C
A
Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), and Thin Shrink Small-Outline (PW)
Packages, Ceramic Chip Carriers (FK), and
Plastic (N) and Ceramic (J) DIPs
13 2A2
12 1Y4
11
2A1
description
SN54ABT2241 . . . FK PACKAGE
(TOP VIEW)
These octal buffers and line drivers are designed
specifically to improve both the performance and
density of 3-state memory address drivers, clock
drivers, and bus-oriented receivers and
transmitters. Together with the SN54ABT2240,
SN74ABT2240A and ’ABT2244A, these devices
provide the choice of selected combinations of
inverting and noninverting outputs, symmetrical
active-low output-enable (OE) inputs, and
complementaryOEandOEinputs. Thesedevices
feature high fan-out and improved fan-in.
3
2
1
20 19
18
1Y1
2A4
1Y2
2A3
1Y3
1A2
2Y3
1A3
2Y2
1A4
4
5
6
7
8
17
16
15
14
9 10 11 12 13
The outputs, which are designed to sink up to
12 mA, include equivalent 25-Ω series resistors to
reduce overshoot and undershoot.
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. OE
should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by the
current-sourcing capability of the driver.
The SN54ABT2241 is characterized for operation over the full military temperature range of –55°C to 125°C.
The SN74ABT2241 is characterized for operation from –40°C to 85°C.
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.
EPIC-ΙΙB is a trademark of Texas Instruments Incorporated.
Copyright 1997, 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
SN54ABT2241, SN74ABT2241
OCTAL BUFFERS AND LINE/MOS DRIVERS
WITH 3-STATE OUTPUTS
SCBS233B – JANUARY 1991 – REVISED JANUARY 1997
FUNCTION TABLES
INPUTS
OUTPUT
1Y
1OE
1A
H
L
L
H
L
L
H
X
Z
INPUTS
OUTPUT
2Y
2OE
H
2A
H
H
L
H
L
L
X
Z
†
logic symbol
19
1
1OE
2OE
EN
EN
11
13
15
17
9
7
5
3
2
18
16
14
12
1
1
2A1
2A2
2A3
2A4
2Y1
2Y2
2Y3
2Y4
1A1
4
1Y1
1Y2
1Y3
1Y4
1A2
6
1A3
8
1A4
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
1
19
11
1OE
2OE
2A1
2
18
16
14
12
9
7
5
3
1A1
1Y1
1Y2
1Y3
1Y4
2Y1
2Y2
2Y3
2Y4
4
13
15
17
1A2
2A2
2A3
2A4
6
1A3
8
1A4
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ABT2241, SN74ABT2241
OCTAL BUFFERS AND LINE/MOS DRIVERS
WITH 3-STATE OUTPUTS
SCBS233B – JANUARY 1991 – REVISED JANUARY 1997
schematic of Y outputs
V
CC
Output
GND
†
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 7 V
I
Voltage range applied to any output in the high or power-off state, V
. . . . . . . . . . . . . . . . . . . –0.5 V to 5.5 V
O
Current into any output in the low state, I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA
O
Input clamp current, I (V < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –18 mA
IK
I
Output clamp current, I
(V < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA
OK
O
Package thermal impedance, θ (see Note 2): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115°C/W
JA
DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128°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. The package thermal impedance is calculated in accordance with EIA/JEDEC Std JESD51, except for through-hole packages,
which use a trace length of zero.
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ABT2241, SN74ABT2241
OCTAL BUFFERS AND LINE/MOS DRIVERS
WITH 3-STATE OUTPUTS
SCBS233B – JANUARY 1991 – REVISED JANUARY 1997
recommended operating conditions (see Note 3)
SN54ABT2241 SN74ABT2241
UNIT
MIN
4.5
2
MAX
MIN
4.5
2
MAX
V
V
V
V
Supply voltage
5.5
5.5
V
V
CC
High-level input voltage
Low-level input voltage
Input voltage
IH
0.8
0.8
V
IL
0
V
0
V
CC
V
I
CC
I
I
High-level output current
Low-level output current
Input transition rise or fall rate
Operating free-air temperature
–24
12
–32
12
5
mA
mA
ns/V
°C
OH
OL
∆t/∆v
Outputs enabled
5
T
–55
125
–40
85
A
NOTE 3: Unused inputs must be held high or low to prevent them from floating.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
T
= 25°C
SN54ABT2241 SN74ABT2241
A
PARAMETER
TEST CONDITIONS
UNIT
†
MIN TYP
MAX
MIN
MAX
MIN
MAX
V
V
V
V
V
= 4.5 V,
I = –18 mA
–1.2
–1.2
–1.2
V
IK
CC
CC
CC
I
= 4.5 V,
= 5 V,
I
I
I
I
I
= –3 mA
= –3 mA
= –24 mA
= –32 mA
= 12 mA
2.5
3
2.5
3
2.5
3
OH
OH
OH
OH
OL
V
OH
2
2
V
= 4.5 V
= 4.5 V,
CC
CC
2*
2
V
V
V
0.8
0.8
0.8
V
OL
100
mV
µA
µA
µA
µA
hys
I
I
I
I
V
V
V
V
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 0,
V = V or GND
I CC
±1
50
±1
50
±1
50
I
CC
CC
CC
CC
CC
V
= 2.7 V
= 0.5 V
OZH
OZL
off
O
O
V
–50
±100
–50
–50
±100
V or V ≤ 4.5 V
I
O
V
V
= 5.5 V,
= 5.5 V
I
Outputs high
= 2.5 V
50
50
50
µA
CEX
O
‡
I
O
V
CC
= 5.5 V,
V
O
–50
–100 –180
–50
–180
250
30
–50
–180
250
30
mA
µA
Outputs high
Outputs low
1
24
250
30
V
I
= 5.5 V,
= 0,
CC
O
I
mA
µA
CC
V = V
I
or GND
CC
Outputs disabled
0.5
250
250
250
V
= 5.5 V,
CC
Outputs enabled
Outputs disabled
1.5
0.05
1.5
1.5
0.05
1.5
1.5
0.05
1.5
One input at 3.4 V,
Other inputs at
Data inputs
§
∆I
CC
mA
V
CC
or GND
V
CC
= 5.5 V, One input at 3.4 V,
or GND
Control inputs
Other inputs at V
CC
V = 2.5 V or 0.5 V
C
C
C
C
3
pF
pF
i
i
I
V = 2.5 V or 0.5 V
O
8.5
o
o
* On products compliant to MIL-PRF-38535, this parameter does not apply.
†
‡
§
All typical values are at V
= 5 V.
CC
Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
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.
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ABT2241, SN74ABT2241
OCTAL BUFFERS AND LINE/MOS DRIVERS
WITH 3-STATE OUTPUTS
SCBS233B – JANUARY 1991 – REVISED JANUARY 1997
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature, C = 50 pF (unless otherwise noted) (see Figure 1)
L
V
T
= 5 V,
= 25°C
CC
A
SN54ABT2241 SN74ABT2241
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
UNIT
MIN
1
TYP
3
MAX
4.3
5.3
4.8
7.6
5.6
5.8
MIN
1
MAX
4.8
5.7
6.1
8.6
6.7
6.9
MIN
1
MAX
4.7
5.6
5.8
8.4
6.6
6.4
t
t
t
t
t
t
PLH
PHL
PZH
PZL
PHZ
PLZ
A
Y
Y
Y
ns
ns
ns
1
4.3
3.5
6.2
4.2
3.9
1
1
1.1
2.1
1.7
1.7
1.1
2.1
1.7
1.7
1.1
2.1
1.7
1.7
OE or OE
OE or OE
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.
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ABT2241, SN74ABT2241
OCTAL BUFFERS AND LINE/MOS DRIVERS
WITH 3-STATE OUTPUTS
SCBS233B – JANUARY 1991 – REVISED JANUARY 1997
PARAMETER MEASUREMENT INFORMATION
7 V
Open
S1
500 Ω
From Output
Under Test
TEST
S1
GND
t
t
/t
Open
7 V
PLH PHL
/t
C
= 50 pF
L
t
500 Ω
PLZ PZL
/t
(see Note A)
Open
PHZ PZH
LOAD CIRCUIT
3 V
0 V
Timing Input
Data Input
1.5 V
t
w
t
t
h
su
3 V
0 V
3 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
3 V
0 V
3 V
0 V
Output
Control
1.5 V
1.5 V
1.5 V
1.5 V
Input
t
PZL
t
t
PHL
PLH
t
PLZ
Output
Waveform 1
S1 at 7 V
V
V
3.5 V
OH
1.5 V
1.5 V
1.5 V
1.5 V
Output
V
V
+ 0.3 V
– 0.3 V
OL
V
OL
OL
(see Note B)
t
PHZ
t
PLH
t
t
PZH
PHL
Output
Waveform 2
S1 at Open
(see Note B)
V
OH
V
V
OH
OH
1.5 V
1.5 V
Output
≈ 0 V
OL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
NOTES: A. includes probe and jig capacitance.
C
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 Ω, 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 1. Load Circuit and Voltage Waveforms
6
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 1998, Texas Instruments Incorporated
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