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74als38a
DATASHEETS (Philips)
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Datasheet 74als38a DATASHEETS (Philips)

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Page 1
INTEGRATED CIRCUITS
74ALS38A
Quad 2-Input NAND buffer (open collector)
Product specification 1991 Feb 08 IC05 Data Handbook
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Page 2
74ALS38AQuad 2-input NAND buffer (open collector)

PIN CONFIGURATION

TYPE
TYPICAL
PROPAGATION DELAY
TYPICAL
SUPPLY CURRENT
(TOTAL)
74ALS38A 7.0ns 3.5mA

ORDERING INFORMATION

ORDER CODE
DESCRIPTION COMMERCIAL RANGE
V
= 5V ±10%,
CC
T
= 0°C to +70°C
amb
DRAWING
NUMBER
GND 3Y
14-pin plastic DIP 74ALS38AN SOT27-1
14-pin plastic SO 74ALS38AD SOT108-1

INPUT AND OUTPUT LOADING AND FAN-OUT TABLE

PINS DESCRIPTION
nA, nB Data inputs 1.0/1.0 20µA/0.1mA
nY Data outputs 20/80 0.4mA/8mA
NOTE: One (1.0) ALS unit load is defined as: 20µA in the High state and 0.1mA in the Low state.

LOGIC SYMBOL

IEC/IEEE SYMBOL

74ALS (U.L.)
HIGH/LOW
11A 2
1B
3
1Y
4
2A
5
2B
6
2Y
14
V
CC
13
4B
12
4A
11
4Y
10
3B
9
3A
87
SC00001
LOAD VALUE
HIGH/LOW
1A 1B 2A 2B 3A 3B 4A 4B
VCC = Pin 14 GND = Pin 7

LOGIC DIAGRAM

VCC = Pin 14 GND = Pin 7
12459101213
1Y 2Y 3Y 4Y
36811
1
1A
2
1B
4
2A
5
2B
9
3A
10
3B
12
4A
13
4B
3
1Y
6
2Y
8
3Y
11
4Y
SC00002
SC00035
1 2
4 5
9
10
12 13
&

FUNCTION TABLE

INPUTS OUTPUT
nA nB nY
L L H
L H H H L H H H L
H = High voltage level L = Low voltage level X = Don’t care
3
6
8
11
SC00034
1991 Feb 08 853–1305 01670
2
Page 3
SYMBOL
PARAMETER
UNIT
SYMBOL
PARAMETER
TEST CONDITIONS
1
UNIT
VOLLow-level output voltage
CC
,
IL
,
ICCSupply current (total)
74ALS38AQuad 2-input NAND buffer (open collector)

ABSOLUTE MAXIMUM RATINGS

(Operation beyond the limit set forth in this table may impair the useful life of the device. Unless otherwise noted these limits are over the operating free-air temperature range.)
SYMBOL
V
V
V
I
OUT
I
OUT
T
amb
T
Supply voltage –0.5 to +7.0 V
CC
Input voltage –0.5 to +7.0 V
IN
Input current –30 to +5 mA
IN
Voltage applied to output in High output state –0.5 to V Current applied to output in Low output state 48 mA Operating free-air temperature range 0 to +70 °C Storage temperature range –65 to +150 ° C
stg

RECOMMENDED OPERATING CONDITIONS

V
V
V
I
V
I
OL
T
amb
Supply voltage 4.5 5.0 5.5 V
CC
High-level input voltage 2.0 V
IH
Low-level input voltage 0.8 V
IL
Input clamp current –18 mA
Ik
High-level output voltage 5.5 V
OH
Low-level output current 24 mA Operating free-air temperature range 0 +70 °C
PARAMETER RATING UNIT
CC
V
LIMITS
MIN NOM MAX

DC ELECTRICAL CHARACTERISTICS

(Over recommended operating free-air temperature range unless otherwise noted.)
LIMITS
MIN TYP2MAX
I
OH
V
I I
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type.
2. All typical values are at V
High-level output current VCC = MIN, VIL = MAX, VIH = MIN, VOH = MAX 100 µA
I
= 12mA 0.25 0.40 V
p
Input clamp voltage VCC = MIN, II = I
IK
I
Input current at maximum input voltage VCC = MAX, VI = 7.0V 0.1 mA
I
High-level input current VCC = MAX, VI = 2.7V 20 µA
IH
Low-level input current VCC = MAX, VI = 0.5V –0.1 mA
IL
pp
CC
= 5V, T
amb
= 25°C.
VCC = MIN, VIL = MAX, VIH = MIN
I
CCHVCC
I
CCL
= MAX VI = GND 0.65 1.6 mA
IK
OL
I
= 24mA 0.35 0.50 V
OL
–0.73 –1.5 V
VI = 4.5V 6.5 9.0 mA
1991 Feb 08
3
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74ALS38AQuad 2-input NAND buffer (open collector)

AC ELECTRICAL CHARACTERISTICS

LIMITS
T
= 0°C to +70°C
amb
V
SYMBOL PARAMETER TEST CONDITION
t t
PLH PHL
Propagation delay nA or nB to nY
Waveform 1

AC WAVEFORMS

For all waveforms, VM = 1.3V.
= +5.0V ± 10%
CC
C
= 50pF, RL = 500Ω
L
MIN MAX
3.0
3.0
11.0
11.0
UNIT
ns
nA, nB
nY
V
M
t
PHL
V
M
t
PLH
V
V
M
Waveform 1. Propagation Delay for Data to Output

TEST CIRCUIT AND WAVEFORMS

V
CC
V
PULSE
GENERATOR
IN
R
T
Test Circuit for Open Collector Outputs
DEFINITIONS:
R
= Load resistor;
L
see AC electrical characteristics for value.
= Load capacitance includes jig and probe capacitance;
C
L
see AC electrical characteristics for value.
R
= Termination resistance should be equal to Z
T
pulse generators.
D.U.T.
V
OUT
C
L
M
SC00004
7.0V NEGATIVE
R
L
R
L
PULSE
POSITIVE PULSE
90%
10%
V
M
10%
t
THL (tf
t
TLH (tr
90%
V
M
t
w
V
M
10%
)
f
)
t
)
TLH (tr
t
)
THL (tf
90%
V
M
t
w
90%
10%
AMP (V)
0.3V
AMP (V)
0.3V
Input Pulse Definition
INPUT PULSE REQUIREMENTS
V
Rep.Rate
M
3.5V
1.3V
1MHz
t
w
500ns
t
TLHtTHL
2.0ns 2.0ns
SC00036
OUT
of
Family
Amplitude
74ALS
1991 Feb 08
4
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74ALS38AQuad 2-input NAND buffer (open collector)

DIP14: plastic dual in-line package; 14 leads (300 mil) SOT27-1

1991 Feb 08
5
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74ALS38AQuad 2-input NAND buffer (open collector)

SO14: plastic small outline package; 14 leads; body width 3.9 mm SOT108-1

1991 Feb 08
6
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74ALS38AQuad 2-input NAND buffer (open collector)

DEFINITIONS

Data Sheet Identification Product Status Definition
Objective Specification
Preliminary Specification
Product Specification
Formative or in Design
Preproduction Product
Full Production
Philips Semiconductors and Philips Electronics North America Corporation reserve the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification.
LIFE SUPPORT APPLICA TIONS Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices, or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected
to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale.
Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088–3409 Telephone 800-234-7381
This data sheet contains the design target or goal specifications for product development. Specifications may change in any manner without notice.
This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product.
This data sheet contains Final Specifications. Philips Semiconductors reserves the right to make changes at any time without notice, in order to improve design and supply the best possible product.
Copyright Philips Electronics North America Corporation 1997
All rights reserved. Printed in U.S.A.
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1991 Feb 08
7
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