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Datasheet> All Categories > logic> logic> SN54ALS138FK
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SN54ALS138FK

Description
Decoder/Driver, ALS Series, Inverted Output, TTL, CQCC20, CERAMIC, LCC-20
Categorylogic    logic   
File Size83KB，5 Pages
ManufacturerRochester Electronics
Websitehttps://www.rocelec.com/
Download Datasheet Parametric Compare View All

SN54ALS138FK Overview

Decoder/Driver, ALS Series, Inverted Output, TTL, CQCC20, CERAMIC, LCC-20

SN54ALS138FK Parametric

Parameter NameAttribute value
MakerRochester Electronics
package instructionQCCN,
Reach Compliance Codeunknown
ECCN codeEAR99
seriesALS
Input adjustmentSTANDARD
JESD-30 codeS-CQCC-N20
length8.89 mm
Logic integrated circuit typeOTHER DECODER/DRIVER
Number of functions1
Number of terminals20
Maximum operating temperature125 °C
Minimum operating temperature-55 °C
Output polarityINVERTED
Package body materialCERAMIC, METAL-SEALED COFIRED
encapsulated codeQCCN
Package shapeSQUARE
Package formCHIP CARRIER
propagation delay (tpd)28 ns
Maximum seat height2.03 mm
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)4.5 V
Nominal supply voltage (Vsup)5 V
surface mountYES
technologyTTL
Temperature levelMILITARY
Terminal formNO LEAD
Terminal pitch1.27 mm
Terminal locationQUAD
width8.89 mm

SN54ALS138FK Preview

SN54ALS138, SN54AS138, SN74ALS138A, SN74AS138
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SDAS055C – APRIL 1982 – REVISED FEBRUARY 1994
•
•
•
Designed Specifically for High-Speed
Memory Decoders and Data Transmission
Systems
Incorporates 3 Enable inputs to Simplify
Cascading and/or Data Reception
Package Options include Plastic Small-
Outline Packages, Ceramic Chip Carriers,
and Standard Plastic and Ceramic 300-mil
DIPs
SN54ALS138, SN54AS138 . . . J PACKAGE
SN74ALS138A, SN74AS138 . . . D OR N PACKAGE
(TOP VIEW)
description
The 54ALS138, 74ALS138A, and
′AS138
circuits
are designed to be used in high-performance
memory-decoding or data-routing applications
requiring very short propagation delay times. In
high-performance memory systems, this decoder
can be used to minimize the effects of system
decoding. When employed with high-speed
memories with a fast enable circuit, the delay
times of this decoder and the enable time of the
memory are usually less than the typical access
time of the memory. This means that the effective
system delay introduced by the Schottky-clamped
system decoder is negligible.
The conditions at the binary select inputs and the
three enable inputs select one of eight input lines.
Two active-low and one active-high enable inputs
reduce the need for external gates or inverters
when expanding. A 24-line decoder can be
implemented without external inverters and a
32-line decoder requires only one inverter. An
enable input can be used as a data input for
demultiplexing applications.
A
B
C
OE2A
OE2B
OE1
Y7
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
Y0
Y1
Y2
Y3
Y4
Y5
Y6
SN54ALS138, SN54AS138 . . . FK PACKAGE
(TOP VIEW)
C
OE2A
NC
OE2B
OEI
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
B
A
NC
V CC
Y0
Y1
Y2
NC
Y3
Y4
NC – No internal connection
The SN54ALS138 and SN54AS138 are characterized for operation over the full military temperature range of
– 55°C to 125°C. The SN74ALS138A and SN74AS138 are characterized for operation from 0°C to 70°C.
logic symbols (alternatives)
†
A
B
C
1
2
3
BIN/OCT
1
2
4
0
1
2
3
OE1
OE2A
OE2B
6
4
5
EN
&
4
5
6
7
15
14
13
12
11
10
9
7
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
OE1
OE2A
OE2B
6
4
5
&
A
B
C
1
2
3
2
DMUX
0
G0
7
0
1
2
3
4
5
6
7
15
14
13
12
11
10
9
7
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
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.
Copyright
©
1994, Texas Instruments Incorporated
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
Y7
GND
NC
Y6
Y5
1
SN54ALS138, SN54AS138, SN74ALS138A, SN74AS138
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SDAS055C – APRIL 1982 – REVISED FEBRUARY 1994
logic diagram (positive logic)
15
1
A
14
Y1
Y0
13
Select
Inputs
2
B
12
Y2
Y3
Data
Outputs
Y4
11
3
C
10
Y5
9
Y6
Enable
Inputs
OE2A
OE2B
OE1
4
5
6
7
Y7
† These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the D, J, and N packages.
FUNCTION TABLE
ENABLE
INPUTS
OE1
X
X
L
H
H
H
H
H
H
H
H
OE2A
H
X
X
L
L
L
L
L
L
L
L
OE2B
X
H
X
L
L
L
L
L
L
L
L
C
X
X
X
L
L
L
L
H
H
H
H
SELECT
INPUTS
B
X
X
X
L
L
H
H
L
L
H
H
A
X
X
X
L
H
L
H
L
H
L
H
Y0
H
H
H
L
H
H
H
H
H
H
H
Y1
H
H
H
H
L
H
H
H
H
H
H
Y2
H
H
H
H
H
L
H
H
H
H
H
OUTPUTS
Y3
H
H
H
H
H
H
L
H
H
H
H
Y4
H
H
H
H
H
H
H
L
H
H
H
Y5
H
H
H
H
H
H
H
H
L
H
H
Y6
H
H
H
H
H
H
H
H
H
L
H
Y7
H
H
H
H
H
H
H
H
H
H
L
2
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
SN54ALS138, SN54AS138, SN74ALS138A, SN74AS138
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SDAS055C – APRIL 1982 – REVISED FEBRUARY 1994
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage, V
I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Operating free-air temperature range: SN54ALS138, SN54AS138 . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C
SN74ALS138A, SN74AS138 . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
recommended operating conditions
SN54ALS138
MIN
VCC
VIH
VIL
IOH
IOL
TA
Supply voltage
High-level input voltage
Low-level input voltage
High-level output current
Low-level output current
Operating free-air temperature
– 55
4.5
2
0.7
– 0.4
4
125
0
NOM
5
MAX
5.5
SN74ALS138A
MIN
4.5
2
0.8
– 0.4
8
70
NOM
5
MAX
5.5
UNIT
V
V
V
mA
mA
°C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
VIK
VOH
VOL
II
IIH
IIL
IO‡
VCC = 4.5 V,
VCC = 4.5 V,
VCC = 4.5 V,
VCC = 4.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
TEST CONDITIONS
II = – 18 mA
IOH = – 0.4 mA
IOL = 4 mA
IOL = 8 mA
VI = 7 V
VI = 2.7 V
VI = 0.4 V
VO = 2.25 V
– 30
SN54ALS138
MIN
TYP†
MAX
– 1.5
VCC –2
0.25
0.4
0.1
20
– 0.1
–112
– 30
VCC –2
0.25
0.35
0.4
0.5
0.1
20
– 0.1
–112
SN74ALS138A
MIN
TYP†
MAX
– 1.5
UNIT
V
V
V
mA
µA
mA
mA
ICC
VCC = 5.5 V
5
10
5
10
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 Note 1)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500
Ω
,
TA = MIN to MAX
SN54ALS138
MIN
tPLH
tPHL
tPLH
tPHL
NOTE 1:
A B C
A, B,
Any OE or OE
Any Y
Any Y
2
6
2
4
MAX
28
22
22
21
SN74ALS138
MIN
5
6
3
4
MAX
22
18
17
17
ns
ns
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
UNIT
Load circuit and voltage waveforms are shown in Section 1 of ASL/AS Logic Data Book, 1986.
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
3
SN54ALS138, SN54AS138, SN74ALS138A, SN74AS138
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SDAS055C – APRIL 1982 – REVISED FEBRUARY 1994
recommended operating conditions
SN54AS138
MIN
VCC
VIH
VIL
IOH
IOL
TA
Supply voltage
High-level input voltage
Low-level input voltage
High-level output current
Low-level output current
Operating free-air temperature
– 55
4.5
2
0.8
–2
20
125
0
NOM
5
MAX
5.5
SN74AS138
MIN
4.5
2
0.8
–2
20
70
NOM
5
MAX
5.5
UNIT
V
V
V
mA
mA
°C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
VIK
VOH
VOL
II
IIH
IIL
IO‡
ICCH
ICCL
TEST CONDITIONS
VCC = 4.5 V,
VCC = 4.5 V to 5.5 V,
VCC = 4.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V
II = – 18 mA
IOH = – 2 mA
IOL = 20 mA
VI = 7 V
VI = 2.7 V
VI = 0.4 V
VO = 2.25 V
– 30
12
SN54AS138
MIN
TYP† MAX
– 1.2
VCC – 2
0.35
0.5
0.1
20
– 0.5
– 112
17.5
– 30
12
VCC – 2
0.35
0.5
0.1
20
– 0.5
– 112
17.5
SN74AS138
MIN
TYP† MAX
– 1.2
UNIT
V
V
V
mA
µA
mA
mA
mA
VCC = 5.5 V
14
20
14
20
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 Note 1)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500
Ω
,
TA = MIN to MAX
SN54AS138
MIN
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
NOTE 1:
A, B,
A B C
OE1
OE2
Any Y
Any Y
Any Y
2
2
2
2
2
2
MAX
11
11
11.5
11
9
10
SN74AS138
MIN
2
2
2
2
2
2
MAX
10
9.5
10
10
7.5
8.5
ns
ns
ns
PARAMETER
FROM
(
)
(INPUT)
TO
(
)
(OUTPUT)
UNIT
Load circuit and voltage waveforms are shown in Section 1.
4
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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SN54ALS138FK Related Products

SN54ALS138FK SNJ54ALS138FK
Description Decoder/Driver, ALS Series, Inverted Output, TTL, CQCC20, CERAMIC, LCC-20 Decoder/Driver, ALS Series, Inverted Output, TTL, CQCC20, CERAMIC, LCC-20
Maker Rochester Electronics Rochester Electronics
package instruction QCCN, QCCN,
Reach Compliance Code unknown unknown
ECCN code EAR99 EAR99
series ALS ALS
Input adjustment STANDARD STANDARD
JESD-30 code S-CQCC-N20 S-CQCC-N20
length 8.89 mm 8.89 mm
Logic integrated circuit type OTHER DECODER/DRIVER OTHER DECODER/DRIVER
Number of functions 1 1
Number of terminals 20 20
Maximum operating temperature 125 °C 125 °C
Minimum operating temperature -55 °C -55 °C
Output polarity INVERTED INVERTED
Package body material CERAMIC, METAL-SEALED COFIRED CERAMIC, METAL-SEALED COFIRED
encapsulated code QCCN QCCN
Package shape SQUARE SQUARE
Package form CHIP CARRIER CHIP CARRIER
propagation delay (tpd) 28 ns 28 ns
Maximum seat height 2.03 mm 2.03 mm
Maximum supply voltage (Vsup) 5.5 V 5.5 V
Minimum supply voltage (Vsup) 4.5 V 4.5 V
Nominal supply voltage (Vsup) 5 V 5 V
surface mount YES YES
technology TTL TTL
Temperature level MILITARY MILITARY
Terminal form NO LEAD NO LEAD
Terminal pitch 1.27 mm 1.27 mm
Terminal location QUAD QUAD
width 8.89 mm 8.89 mm

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