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DM74ALS38AM

P1-P3P4-P4
© 2000 Fairchild Semiconductor Corporation DS006193 www.fairchildsemi.com
September 1986
Revised February 2000
DM74ALS38A Quadruple 2-Input NAND Buffer with Open-Collector Outputs
DM74ALS38A
Quadruple 2-Input NAND Buffer
with Open-Collector Outputs
General Description
This device contains four independent gates, each of which
performs the logic NAND function. The open-collector out-
puts require external pull-up resistors for proper logical
operation.
Pull-Up Resistor Equations
Where: N
1
(I
OH
) = total maximum output HIGH current
for all outputs tied to pull-up resistor
N
2
(I
IH
) = total maximum input HIGH current
for all inputs tied to pull-up resistor
N
3
(I
IL
) = total maximum input LOW current for
all inputs tied to pull-up resistor
Features
■ Switching specifications at 50 pF
■ Switching specifications guaranteed over full tempera-
ture and V
CC
range
■ Advanced oxide-isolated, ion-implanted Schottky TTL
process
■ Functionally and pin for pin compatible with LS TTL
counterpart
■ Improved AC performance over LS38
■ Improved line receiving characteristics
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram Function Table
Y = AB
H = HIGH Logic Level
L = LOW Logic Level
Order Number Package Number Package Description
DM74ALS38AM M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
DM74ALS38AN N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Inputs Output
ABY
LLH
LHH
HLH
HHL
www.fairchildsemi.com 2
DM74ALS38A
Absolute Maximum Ratings(Note 1)
Note 1: The “Absolute Maximum Ratings” are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions
for actual device operation.
Recommended Operating Conditions
Electrical Characteristics
over recommended operating free air temperature range. All typical values are measured at V
CC
= 5V, T
A
= 25°C.
Switching Characteristics
over recommended operating free air temperature range
Supply Voltage 7V
Input Voltage 7V
High Level Output Voltage 7V
Operating Free Air Temperature Range 0°C to +70°C
Storage Temperature Range −65°C to +150°C
Typical θ
JA
N Package 83.0°C/W
M Package 114.0°C/W
Symbol Parameter Min Nom Max Units
V
CC
Supply Voltage 4.5 5 5.5 V
V
IH
HIGH Level Input Voltage 2 V
V
IL
LOW Level Input Voltage 0.8 V
V
OH
HIGH Level Output Voltage 5.5 V
I
OL
LOW Level Output Current 24 mA
T
A
Free Air Operating Temperature 0 70 °C
Symbol Parameter Conditions Min Typ Max Units
V
IK
Input Clamp Voltage V
CC
= 4.5V, I
I
= −18 mA −1.5 V
I
OH
HIGH Level Output Current V
CC
= 4.5V, V
OH
= 5.5V 100 µA
V
OL
LOW Level V
CC
= 4.5V
I
OL
= 24 mA 0.35 0.5 V
Output Voltage V
IH
= 2V
I
I
Input Current at Maximum
V
CC
= 5.5V, V
IH
= 7V 0.1 mA
Input Voltage
I
IH
HIGH Level Input Current V
CC
= 5.5V, V
IH
= 2.7V 20 µA
I
IL
LOW Level Input Current V
CC
= 5.5V, V
IL
= 0.4V −0.1 mA
I
CCH
Supply Current with
V
CC
= 5.5V, V
I
= 0V 0.86 1.6 mA
Outputs HIGH
I
CCL
Supply Current with
V
CC
= 5.5V, V
I
= 4.5V 4.0 7.8 mA
Outputs LOW
Symbol Parameter Conditions Min Max Units
t
PLH
Propagation Delay Time V
CC
= 4.5V to 5.5V
10 33 ns
LOW-to-HIGH Level Output R
L
= 500Ω
t
PHL
Propagation Delay Time C
L
= 50 pF
212ns
HIGH-to-LOW Level Output
3 www.fairchildsemi.com
DM74ALS38A
Physical Dimensions inches (millimeters) unless otherwise noted
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
Package Number M14A
P1-P3P4-P4

DM74ALS38AM

Mfr. #:
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Manufacturer:
ON Semiconductor / Fairchild
Description:
Logic Gates Qdrpl 2-Inp NAND Buf
Lifecycle:
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