SN54F38, SN74F38
QUADRUPLE 2-INPUT POSITIVE-NAND BUFFERS
WITH OPEN-COLLECTOR OUTPUTS
SDFS013A – MARCH 1987 – REVISED OCT OBER 1993
Copyright 1993, Texas Instruments Incorporated
2–1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
• Package Options Include Plastic
Small-Outline Packages, Ceramic Chip
Carriers, and Standard Plastic and Ceramic
300-mil DIPs
description
These devices contain four independent 2-input
NAND buffer gates with open-collector outputs.
They perform the Boolean functions Y = A
• B or
Y = A
+ B in positive logic.
The open-collector outputs require pullup
resistors to perform correctly. They may be
connected to other open-collector outputs to
implement active-low wired-OR or active-high
wired-AND functions. Open-collector devices are
often used to generate higher V
OH
levels.
The SN54F38 is characterized for operation over
the full military temperature range of –55°C to
125°C. The SN74F38 is characterized for
operation from 0°C to 70°C.
FUNCTION TABLE
(each gate)
INPUTS
OUTPUT
A B
Y
H H L
L XH
XLH
logic symbol
†
logic diagram (positive logic)
1
1A
2
1B
4
2A
5
2B
9
3A
10
3B
12
4A
13
4B
&
1Y
3
2Y
6
3Y
8
4Y
11
1Y
3
1
1A
2
1B
2Y
6
4
2A
5
2B
3Y
8
9
3A
10
3B
4Y
11
12
4A
13
4B
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
Pin numbers shown are for the D, J, and N packages.
SN54F38 ...J PACKAGE
SN74F38 ...D OR N PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
14
13
12
11
10
9
8
1A
1B
1Y
2A
2B
2Y
GND
V
CC
4B
4A
4Y
3B
3A
3Y
SN54F38 . . . FK PACKAGE
(TOP VIEW)
3212019
910111213
4
5
6
7
8
18
17
16
15
14
4A
NC
4Y
NC
3B
1Y
NC
2A
NC
2B
1B1ANC
3Y
3A
V
4B
2Y
GND
NC
CC
NC – No internal connection
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.
SN54F38, SN74F38
QUADRUPLE 2-INPUT POSITIVE-NAND BUFFERS
WITH OPEN-COLLECTOR OUTPUTS
SDFS013A – MARCH 1987 – REVISED OCT OBER 1993
2–2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage range, V
CC
–0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, V
I
(see Note 1) –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input current range –30 mA to 5 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high state –0.5 V to V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current into any output in the low state 128 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range: SN54F38 –55°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74F38 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.
NOTE 1: The input voltage ratings may be exceeded provided the input current ratings are observed.
recommended operating conditions
SN54F38 SN74F38
MIN NOM MAX MIN NOM MAX
UNIT
V
CC
Supply voltage 4.5 5 5.5 4.5 5 5.5 V
V
IH
High-level input voltage 2 2 V
V
IL
Low-level input voltage 0.8 0.8 V
I
IK
Input clamp current –18 –18 mA
V
OH
High-level output voltage 4.5 4.5 V
I
OL
Low-level output current 48 64 mA
T
A
Operating free-air temperature –55 125 0 70 °C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54F38 SN74F38
PARAMETER
TEST CONDITIONS
MIN TYP‡MAX MIN TYP‡MAX
UNIT
V
IK
VCC = 4.5 V, II = –18 mA –0.73 –1.2 –1.2 V
VCC = 4.5 V, IOL = 48 mA 0.3 0.5 0.3 0.5
V
OL
VCC = 4.5 V, IOL = 64 mA 0.3 0.5 0.3 0.5
V
I
I
VCC = 5.5 V, VI = 7 V 0.1 0.1 mA
I
IH
VCC = 5.5 V, VI = 2.7 V 20 20 µA
I
IL
VCC = 5.5 V, VI = 0.5 V – 0.6 – 0.6 mA
I
OH
VCC = 4.5 V 250 250 µA
I
CCH
VCC = 5.5 V, VI = 0 4 7 4 7 mA
I
CCL
VCC = 5.5 V, VI = 4.5 V 22 30 22 30 mA
‡
All typical values are at VCC = 5 V, TA = 25°C.
SN54F38, SN74F38
QUADRUPLE 2-INPUT POSITIVE-NAND BUFFERS
WITH OPEN-COLLECTOR OUTPUTS
SDFS013A – MARCH 1987 – REVISED OCTOBER 1993
2–3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics (see Note 2)
PARAMETER
FROM
(
INPUT
)
TO
(
OUTPUT
)
VCC = 5 V,
CL = 50 pF,
RL = 500 Ω,
TA = 25°C
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500Ω,
TA = MIN to MAX
†
UNIT
(INPUT)
(OUTPUT)
′F38 SN54F38 SN74F38
MIN TYP MAX MIN MAX MIN MAX
t
PLH
6.7 9.6 12.5 6.2 14 6.7 13
t
PHL
A or B
Y
1 2.6 5 1 6.5 1 5.5
ns
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
NOTE 2: Load circuits and waveforms are shown in Section 1.
SN54F38, SN74F38
QUADRUPLE 2-INPUT POSITIVE-NAND BUFFERS
WITH OPEN-COLLECTOR OUTPUTS
SDFS013A – MARCH 1987 – REVISED OCT OBER 1993
2–4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
IMPORTANT NOTICE
T exas 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.
CERT AIN 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 APPLICA TIONS IS UNDERST OOD 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
Loading...