Fairchild DM74ALS05A service manual
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DM74ALS05A
Hex Inverter with Open Collector Outputs
DM74ALS05A Hex Inverter with Open Collector Outputs
September 1986
Revised February 2000
General Description
This device contain s six i ndepe ndent gates, each o f w hich
performs the logic INVERT function. The open-collector
outputs require exter nal pull-up r esistors for pr oper logical
operation.
Pull-Up Resistor Equations
Where: N
N
(IOH) = total maximum output HIGH current
1
for all outputs tied to pull-up resistor
(IIH) = total maximum input HIGH current
2
for all inputs tied to pull-up resistor
(IIL) = total maximum input LOW current for
N
3
all inputs tied to pull-up resistor
Features
■ Switching specifications at 50 pF
■ Switching specifications guaranteed over full tempera-
ture and V
■ Advanced oxide-isolated, ion-implanted Schottky TTL
process
■ Functionally and pin for pin compatible with Schottky
and low power Schottky TTL counterpart
■ Improved AC performance over Scho ttky and low power
Schottky counterparts
CC
range
Ordering Code:
Order Number Package Number Package Description
DM74ALS05AM M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
DM74ALS05AN N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also availab le in Tape and Reel. Specify by appending th e s uffix let t er “X” to the ordering cod e.
Connection Diagram Function Table
Y = A
Input Output
AY
LH
HL
H = HIGH Logic Level
L = LOW Logic Level
© 2000 Fairchild Semiconductor Corporation DS006178 www.fairchildsemi.com
Absolute Maximum Ratings(Note 1)
Supply Voltage 7V
Input Voltage 7V
HIGH Level Output Voltage 7V
Operating Free Air Temperature Range 0°C to +70°C
DM74ALS05A
Storage Temperature Range −65°C to +150°C
Typical θ
JA
N Package 88.0°C/W
Note 1: The “Absolute Maximum Ratin gs” are those v alues beyon d which
the safety of the dev ice cannot be guaranteed. T he device sh ould not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Recommend ed O peratin g Cond itions” t able w ill defin e the c ondit ions
for actual device operation.
M Package 118.5°C/W
Recommended Operating Conditions
Symbol Parameter Min Nom Max Units
V
CC
V
IH
V
IL
V
OH
I
OL
T
A
Supply Voltage 4.5 5 5.5 V
HIGH Level Input Voltage 2 V
LOW Level Input Voltage 0.8 V
HIGH Level Output Voltage 5.5 V
LOW Level Output Current 8 mA
Free Air Operating Temperature 0 70 °C
Electrical Characteristics
over recommended operating free air temperature range. All typical values are measured at VCC = 5V, TA = 25°C.
Symbol Parameter Conditions Min Typ Max Units
V
IK
I
OH
V
OL
I
I
I
IH
I
IL
I
CC
Input Clamp Voltage VCC = 4.5V, II = −18 mA −1.5 V
HIGH Level Output Current VCC = 4.5V, VOH = 5.5V 100 µA
LOW Level VCC = 4.5V IOL =4 mA 0.25 0.4 V
Output Voltage IOL = 8 mA 0.35 0.5 V
Input Current @ Max
Input Voltage
HIGH Level Input Current VCC = 5.5V, VIH = 2.7V 20 µA
LOW Level Input Current VCC = 5.5V, VIL = 0.4V −0.1 mA
Supply Current VCC = 5.5V Outputs HIGH 0.65 1.1 mA
VCC = 5.5V, VIH = 7V 0.1 mA
Outputs LOW 2.4 4.2 mA
Switching Characteristics
over recommended operating free air temperature range
Symbol Parameter Conditions Min Max Units
t
PLH
t
PHL
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Propagation Delay Time VCC = 4.5V to 5.5V
LOW-to-HIGH Level Output RL = 2 kΩ, CL = 50 pF
Propagation Delay Time
HIGH-to-LOW Level Output
23 54 ns
414ns
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