SDAS153E − DECEMBER 1982 − REVISED AUGUST 1995
•
•
SN54ALS241C, SN54AS241A . . . J PACKAGE
SN74ALS241C, SN74AS241A . . . DW OR N PACKAGE
(TOP VIEW)
3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
pnp Inputs Reduce dc Loading
Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), and Standard Plastic (N)
and Ceramic (J) 300-mil DIPs
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
description
These octal buffers/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 designer has a choice of
selected combinations of inverting and
noninverting outputs, symmetrical active-low
output-enable (OE) inputs, and complementary
OE and OE inputs. These devices feature high
fan-out and improved fan-in.
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
VCC
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
2Y4
1A1
1OE
VCC
SN54ALS241C, SN54AS241A . . . FK PACKAGE
(TOP VIEW)
1A2
2Y3
1A3
2Y2
1A4
The -1 version of SN74ALS241C is identical to the
standard version, except that the recommended
maximum IOL of the -1 version is 48 mA. There is
no -1 version of the SN54ALS241C.
4
3 2 1 20 19
18
5
17
6
16
7
15
8
14
9 10 11 12 13
1Y1
2A4
1Y2
2A3
1Y3
2Y1
GND
2A1
1Y4
2A2
The SN54ALS241C and SN54AS241A are
characterized for operation over the full military
temperature range of − 55°C to 125°C. The
SN74ALS241C
and
SN74AS241A
are
characterized for operation from 0°C to 70°C.
2OE
•
FUNCTION TABLES
INPUTS
1OE
1A
OUTPUT
1Y
L
H
H
L
L
L
H
X
Z
INPUTS
2OE
2A
OUTPUT
2Y
H
H
H
H
L
L
L
X
Z
Copyright 1995, Texas Instruments Incorporated
!"#$%! & '("")% $& ! *(+,'$%! -$%).
"!-('%& '!!"# %! &*)''$%!& *)" %/) %)"#& ! )0$& &%"(#)%&
&%$-$"- 1$""$%2. "!-('%! *"!')&&3 -!)& !% )')&&$",2 ',(-)
%)&%3 ! $,, *$"$#)%)"&.
• DALLAS, TEXAS 75265
• HOUSTON, TEXAS 77251−1443
POST OFFICE BOX 655303
POST OFFICE BOX 1443
1
SDAS153E − DECEMBER 1982 − REVISED AUGUST 1995
logic symbol†
1OE
1A1
1A2
1A3
1A4
1
logic diagram (positive logic)
1
1OE
EN
2
18
4
16
6
14
8
12
1A1
1Y1
2OE
2A1
2A2
2A3
2A4
18
4
16
6
14
8
12
1Y1
1Y2
1Y3
1A2
1Y2
1Y4
1A3
19
2
1Y3
EN
11
9
13
7
15
5
17
3
1A4
1Y4
2Y1
2Y2
19
2Y3
2OE
2Y4
2A1
† This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
2A2
2A3
2A4
11
9
13
7
15
5
17
3
2Y1
2Y2
2Y3
2Y4
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡
Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Voltage applied to a disabled 3-state output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Operating free-air temperature range, TA: SN54ALS241C . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 125°C
SN74ALS241C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
‡ 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.
2
•
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
SDAS153E − DECEMBER 1982 − REVISED AUGUST 1995
recommended operating conditions
SN54ALS241C
SN74ALS241C
MIN
NOM
MAX
MIN
NOM
MAX
4.5
5
5.5
4.5
5
5.5
UNIT
VCC
VIH
Supply voltage
VIL
IOH
Low-level input voltage
0.7
0.8
V
High-level output current
−12
−15
mA
12
IOL
Low-level output current
24
48†
mA
70
°C
High-level input voltage
2
TA
Operating free-air temperature
† Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V
2
−55
125
V
V
0
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
VIK
VOH
SN54ALS241C
TYP‡
MAX
TEST CONDITIONS
VCC = 4.5 V,
VCC = 4.5 V to 5.5 V,
II = − 18 mA
IOH = − 0.4 mA
VCC = 4.5 V
IOH = − 3 mA
IOH = − 12 mA
MIN
−1.2
VCC − 2
2.4
VCC = 4.5 V
−1.2
VCC − 2
2.4
3.2
VCC = 5.5 V,
VCC = 5.5 V,
VO = 2.7 V
VO = 0.4 V
II
IIH
VCC = 5.5 V,
VCC = 5.5 V,
VI = 7 V
VI = 2.7 V
IIL
IO§
VCC = 5.5 V,
VCC = 5.5 V,
VI = 0.4 V
VO = 2.25 V
ICC
VCC = 5.5 V
V
V
2
0.25
0.4
IOL = 24 mA
IOL = 48 mA (-1 version)
IOZH
IOZL
UNIT
3.2
2
IOH = − 15 mA
IOL = 12 mA
VOL
SN74ALS241C
TYP‡
MAX
MIN
0.25
0.4
0.35
0.5
0.35
0.5
µA
20
20
−20
−20
µA
0.1
0.1
mA
20
20
µA
−0.1
mA
−112
mA
−0.1
−20
V
−112
−30
Outputs high
9
17
9
18
Outputs low
15
28
15
26
Outputs disabled
17
32
17
30
mA
‡ All typical values are at VCC = 5 V, TA = 25°C.
§ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
•
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
3
SDAS153E − DECEMBER 1982 − REVISED AUGUST 1995
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
R1 = 500 Ω,
R2 = 500 Ω,
TA = MIN to MAX†
SN54ALS241C SN74ALS241C
TO
(OUTPUT)
tPLH
tPHL
A
Y
tPZH
tPZL
1OE
Y
tPHZ
tPLZ
1OE
Y
tPZH
tPZL
2OE
Y
tPHZ
tPLZ
2OE
Y
MIN
MAX
MIN
MAX
3
31
2
11
1
17
3
10
3
33
3
21
3
27
4
21
2
17
1
10
2
32
2
15
3
38
4
21
3
30
5
21
2
17
2
10
3
35
3
15
UNIT
ns
ns
ns
ns
ns
† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡
Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Voltage applied to a disabled 3-state output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Operating free-air temperature range, TA: SN54AS241A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 125°C
SN74AS241A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
‡ 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.
recommended operating conditions
SN54AS241A
SN74AS241A
MIN
NOM
MAX
MIN
NOM
MAX
4.5
5
5.5
4.5
5
5.5
UNIT
VCC
VIH
Supply voltage
VIL
IOH
Low-level input voltage
0.8
0.8
V
High-level output current
−12
−15
mA
IOL
TA
Low-level output current
64
mA
70
°C
4
High-level input voltage
2
2
48
Operating free-air temperature
−55
•
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
125
0
V
V
SDAS153E − DECEMBER 1982 − REVISED AUGUST 1995
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
VIK
VOH
SN54AS241A
TYP†
MAX
TEST CONDITIONS
MIN
VCC = 4.5 V,
VCC = 4.5 V to 5.5 V,
II = − 18 mA
IOH = − 2 mA
VCC = 4.5 V
IOH = − 3 mA
IOH = − 12 mA
VOL
VCC = 4.5 V
IOZH
IOZL
VCC = 5.5 V,
VCC = 5.5 V,
II
IIH
VCC = 5.5 V,
VCC = 5.5 V,
IIL
IO‡
VCC = 5.5 V,
VCC = 5.5 V,
ICC
VCC = 5.5 V
SN74AS241A
TYP†
MAX
MIN
−1.2
VCC − 2
2.4
−1.2
VCC − 2
2.4
3.4
V
3.4
V
2.4
IOH = − 15 mA
IOL = 48 mA
UNIT
2.4
0.27
IOL = 64 mA
VO = 2.7 V
0.55
0.31
0.55
V
µA
50
50
VO = 0.4 V
VI = 7 V
−50
−50
µA
0.1
0.1
mA
VI = 2.7 V
VI = 0.4 V
20
20
µA
−1
mA
−150
mA
−1
VO = 2.25 V
Outputs high
−50
−150
−50
22
35
22
35
Outputs low
61
90
61
90
Outputs disabled
35
56
35
56
mA
† All typical values are at VCC = 5 V, TA = 25°C.
‡ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
tPLH
tPHL
A
Y
tPZH
tPZL
1OE
Y
tPHZ
tPLZ
1OE
Y
tPZH
tPZL
2OE
Y
tPHZ
tPLZ
2OE
Y
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
R1 = 500 Ω,
R2 = 500 Ω,
TA = MIN to MAX§
SN54AS241A SN74AS241A
MIN
MAX
MIN
MAX
2
9
2
6.2
1
7
1
6.2
1
10
1
9
2
8
2
7.5
1
6.5
1
6
1
10.5
1
9
2
11
2
10.5
3
9.5
3
8.5
1
7
1
7
2
12
2
12
UNIT
ns
ns
ns
ns
ns
§ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
•
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POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
5
SDAS153E − DECEMBER 1982 − REVISED AUGUST 1995
PARAMETER MEASUREMENT INFORMATION
SERIES 54ALS/74ALS AND 54AS/74AS DEVICES
7V
RL = R1 = R2
VCC
S1
RL
R1
Test
Point
From Output
Under Test
CL
(see Note A)
From Output
Under Test
RL
Test
Point
CL
(see Note A)
CL
(see Note A)
LOAD CIRCUIT FOR
BI-STATE
TOTEM-POLE OUTPUTS
3.5 V
High-Level
Pulse
1.3 V
R2
LOAD CIRCUIT
FOR 3-STATE OUTPUTS
LOAD CIRCUIT
FOR OPEN-COLLECTOR OUTPUTS
3.5 V
Timing
Input
Test
Point
From Output
Under Test
1.3 V
1.3 V
0.3 V
0.3 V
tsu
Data
Input
tw
th
3.5 V
1.3 V
3.5 V
Low-Level
Pulse
1.3 V
0.3 V
1.3 V
0.3 V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VOLTAGE WAVEFORMS
PULSE DURATIONS
3.5 V
Output
Control
(low-level
enabling)
1.3 V
1.3 V
0.3 V
tPZL
Waveform 1
S1 Closed
(see Note B)
tPLZ
3.5 V
Input
tPHZ
1.3 V
0.3 V
tPHL
tPLH
VOH
In-Phase
Output
VOL
0.3 V
1.3 V
1.3 V
VOL
tPLH
tPHL
VOH
1.3 V
1.3 V
[3.5 V
1.3 V
tPZH
Waveform 2
S1 Open
(see Note B)
1.3 V
VOH
Out-of-Phase
Output
(see Note C)
0.3 V
[0 V
1.3 V
1.3 V
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
NOTES: A. CL includes probe and jig capacitance.
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. When measuring propagation delay items of 3-state outputs, switch S1 is open.
D. All input pulses have the following characteristics: PRR ≤ 1 MHz, tr = tf = 2 ns, duty cycle = 50%.
E. The outputs are measured one at a time with one transition per measurement.
Figure 1. Load Circuits and Voltage Waveforms
6
•
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POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
PACKAGE OPTION ADDENDUM
www.ti.com
15-Dec-2022
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
Samples
(4/5)
(6)
JM38510/38302BRA
ACTIVE
CDIP
J
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
JM38510/
38302BRA
Samples
M38510/38302BRA
ACTIVE
CDIP
J
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
JM38510/
38302BRA
Samples
SN54ALS241CJ
ACTIVE
CDIP
J
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
SN54ALS241CJ
Samples
SN54AS241AJ
ACTIVE
CDIP
J
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
SN54AS241AJ
Samples
SN74ALS241CDW
ACTIVE
SOIC
DW
20
25
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
ALS241C
Samples
SN74ALS241CDWR
ACTIVE
SOIC
DW
20
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
ALS241C
Samples
SN74ALS241CN
ACTIVE
PDIP
N
20
20
RoHS & Green
NIPDAU
N / A for Pkg Type
0 to 70
SN74ALS241CN
Samples
SN74AS241AN
ACTIVE
PDIP
N
20
20
RoHS &
Non-Green
NIPDAU
N / A for Pkg Type
0 to 70
SN74AS241AN
Samples
SNJ54ALS241CFK
ACTIVE
LCCC
FK
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
SNJ54
ALS241CFK
Samples
SNJ54ALS241CJ
ACTIVE
CDIP
J
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
SNJ54ALS241CJ
Samples
SNJ54AS241AJ
ACTIVE
CDIP
J
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
SNJ54AS241AJ
Samples
(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)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of