Page 1
Hex Schmitt-Trigger Inverter
High-Speed Silicon-Gate CMOS
The IN74AC14 is identical in pinout to the LS/ALS14, HC/HCT14.
The device inputs are compatible with standard CMOS outputs; with
pullup resistors, they are compatible with LS/ALS outputs.
The IN74AC14 is useful to “square up” slow input rise and fall
times. Due to the hysteresis voltage of the Schmitt trigger, the
IN74AC14 finds applications in noisy environments.
•
Outputs Directly Interface to CMOS, NMOS, and TTL
•
Operating Voltage Range: 2.0 to 6.0 V
•
Low Input Current: 1.0 µA; 0.1 µA @ 25°C
•
High Noise Immunity Characteristic of CMOS Devices
•
Outputs Source/Sink 24 mA
TECHNICAL DATA
IN74AC14
ORDERING INFORMATION
IN74AC14N Plastic
IN74AC14D SOIC
TA = -40° to 85° C for all
packages
LOGIC DIAGRAM
PIN ASSIGNMENT
FUNCTION TABLE
Inputs Output
AY
LH
HL
PIN 14 =V
PIN 7 = GND
CC
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IN74AC14
MAXIMUM RATINGS
*
Symbol Parameter Value Unit
V
CC
V
V
OUT
I
IN
I
OUT
I
CC
P
DC Supply Voltage (Referenced to GND) -0.5 to +7.0 V
DC Input Voltage (Referenced to GND) -0.5 to VCC +0.5 V
IN
DC Output Voltage (Referenced to GND) -0.5 to VCC +0.5 V
DC Input Current, per Pin
DC Output Sink/Source Current, per Pin
DC Supply Current, VCC and GND Pins
Power Dissipation in Still Air, Plastic DIP+
D
SOIC Package+
±
20
±
50
±
50
750
500
Tstg Storage Temperature -65 to +150
T
Lead Temperature, 1 mm from Case for 10 Seconds
L
260
(Plastic DIP or SOIC Package)
*
Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the Recommended Operating Conditions.
+Derating - Plastic DIP: - 10 mW/°C from 65° to 125°C
SOIC Package: : - 7 mW/°C from 65° to 125°C
mA
mA
mA
mW
°
C
°
C
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Min Max Unit
V
CC
VIN, V
T
J
T
A
I
OH
I
OL
tr, t
f
*
VIN from 30% to 70% V
This device c ontains p rote ction ci rcuitr y to guard a gainst damage d ue to high st atic voltages or electr ic
fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated
voltages to this high-impedance circuit. For proper operation, V
GND≤(V
Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or V
Unused outputs must be left open.
DC Supply Voltage (Referenced to GND) 2.0 6.0 V
DC Input Voltage, Output Voltage (Referenced to GND) 0 V
OUT
Junction Temperature (PDIP) 140
Operating Temperature, All Package Types -40 +85
Output Current - High -24 mA
Output Current - Low 24 mA
Input Rise and Fall Time
(except Schmitt Inputs)
IN
or V
OUT
)≤VCC.
CC
*
V
V
V
=3.0 V
CC
=4.5 V
CC
=5.5 V
CC
and V
IN
0
0
0
should be constrained to the range
OUT
CC
150
40
25
V
°
C
°
C
ns/V
CC
).
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IN74AC14
DC ELECTRICAL CHARACTERISTICS
(Voltages Referenced to GND)
Symbol Parameter Test Conditions V
V
OH
Minimum High-Level
I
OUT
≤ -50 µA
Output Voltage
*
VIN ≤ VT - min
I
=-12 mA
OH
I
=-24 mA
OH
I
=-24 mA
OH
V
OL
Maximum Low- Level
I
OUT
≤ 50 µA
Output Voltage
*
VIN=≥ VT +max
I
=12 mA
OL
I
=24 mA
OL
I
=24 mA
OL
VT +max Maximum Positive-
Going Input Threshold
V
=0.1 V
OUT
T
= Worst Case
A
Voltage
VT - min Minimum Negative-
Going Input Threshold
V
= VCC - 0.1 V
OUT
T
= Worst Case
A
Voltage
VH max Maximum Hysteresis
Voltage
VH min Minimum Hysteresis
Voltage
I
IN
Maximum Input
V
=0.1 V or VCC - 0.1 V
OUT
T
= Worst Case
A
V
=0.1 V or VCC - 0.1 V
OUT
T
= Worst Case
A
VIN=VCC or GND 5.5
Leakage Current
I
OLD
+Minimum Dynamic
V
=1.65 V Max 5.5 75 mA
OLD
Output Current
I
OHD
+Minimum Dynamic
V
=3.85 V Min 5.5 -75 mA
OHD
Output Current
I
CC
Maximum Quiescent
VIN=VCC or GND 5.5 4.0 40
Supply Current
(per Package)
*
All outputs loaded; thresholds on input associated with output under test.
+Maximum test duration 2.0 ms, one output loaded at a time.
Notes:1. I
and I
IN
@ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V V
CC
2. VH=(VT+)-(VT-)
V
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
Guaranteed Limits
CC
25 °C-40°C to
2.9
4.4
5.4
2.56
3.86
4.86
0.1
0.1
0.1
0.36
0.36
0.36
±
0.1
2.2
3.2
3.9
0.5
0.9
1.1
1.2
1.4
1.6
0.3
0.4
0.5
85°C
2.9
4.4
5.4
2.46
3.76
4.76
0.1
0.1
0.1
0.44
0.44
0.44
±
1.0
CC
Unit
V
V
V
V
V
V
µ
A
µ
A
.
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IN74AC14
AC ELECTRICAL CHARACTERISTICS
(CL=50pF,Input tr=tf=3.0 ns)
Symbol Parameter V
t
PLH
Propagation Delay, Input A to Output Y
(Figure 1)
t
PHL
Propagation Delay, Input A to Output Y
(Figure 1)
C
IN
C
PD
*
Voltage Range 3.3 V is 3.3 V ±0.3 V
Maximum Input Capacitance 5.0 4.5 4.5 pF
Power Dissipation Capacitance 25 pF
Voltage Range 5.0 V is 5.0 V ±0.5 V
*
V
CC
Guaranteed Limits
25 °C-40
Min Max Min Max
3.3
5.0
3.3
5.0
1.5
1.5
1.5
1.5
13.5
10.0
11.5
8.5
Typical @25°C,VCC=5.0 V
1.5
1.5
1.5
1.5
°
C to
85°C
15.0
11.0
13.0
9.5
Unit
ns
ns
54
Figure 1. Switching Waveforms
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