NTE74HCT14 & NTE74HCT14T
Integrated Circuit
TTL
−
High Speed CMOS,
Hex Inverting Schmitt Trigger
Description:
The NTE74HCT14 (14−Lead DIP) and NTE74HCT14T (SOIC−14) are hex inverting Schmitt trigger
devices that utilizes advanced silicon−gate CMOS technology to achieve the low power dissipation
and high noise immunity of standard CMOS, as well as the capability to drive 10 LS−TTL loads. Inputs
are protected from damage due to static discharge by internal diode clamps to V
CC
and GND.
Features:
D
Propagation Delay: 13ns (typ)
D
Wide Power Supply Range: 4.5V to 5.5V
D
Low Quiescent Current: 10μA (max)
D
Low Input Current: 1μA (max)
D
Fanout of 10 LS−TTL Loads
D
Typical Hysteresis Voltage: 0.6V at V
CC
= 4.5V
D
TTL, LS Pinout and Input Threshold Compatible
Absolute Maximum Ratings:
(Note 1, Note 2)
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−0.5
to +7.0V
DC Input Voltage, V
IN
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−1.5
to V
CC
+1.5V
DC Output Voltage, V
OUT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−0.5
to V
CC
+ 0.5V
Clamp Diode Current, I
IK
, I
OK
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±20mA
DC Output Current (Per Pin), I
OUT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±25mA
DC V
CC
or GND Current (Per Pin), I
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±50mA
Power Dissipation (Note 3), P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600mW
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−65°C
to +150°C
Lead Temperature (During Soldering, 10sec), T
L
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +260°C
Note 1. Stresses exceeding the Absolute Maximum Ratings may damage the device. The device may
not function or be operable above the Recommended Operating Conditions and stressing the
parts to these levels is not recommended. In addition, extended exposure to stresses above
the Recommended Operating Conditions may effect device reliability. The Absolute Maximum
Ratings are stress ratings only.
Note 2. Unless otherwise specified, all voltages are referenced to GND.
Note 3. Power Dissipation temperature derating: 12mW/°C from +65°C to +85°C.
Recommended Operating Conditions:
Parameter
Supply Voltage
DC Input or Output Voltage
Operating Temperature Range
Symbol
V
CC
V
IN
, V
OUT
T
A
Min
4.5
0
−40
Typ
−
−
−
Max
5.5
V
CC
+85
Unit
V
V
°C
DC Electrical Characteristics:
Parameter
Positive−Going Threshold Voltage
(V
CC
= 5.5V unless otherwise specified)
T
A
= +25°C
T
A
=
−40°
to +85°C
Symbol
V
T+
Minimum
Maximum
Test Conditions
V
CC
= 4.5V
V
CC
= 4.5V
V
CC
= 4.5V
V
CC
= 4.5V
V
CC
= 4.5V
V
CC
= 4.5V
|I
OUT
| = 20μA, V
CC
= 4.5V
|I
OUT
| = 4.0mA, V
CC
= 4.5V
|I
OUT
| = 4.8mA,
|I
OUT
| = 20μA, V
CC
= 4.5V
|I
OUT
| = 4.0mA, V
CC
= 4.5V
|I
OUT
| = 4.8mA
Typ
1.5
1.7
1.5
1.7
0.9
1.0
0.9
1.0
0.6
0.7
0.6
0.7
Guaranteed Limits
1.2
1.4
1.9
2.1
0.5
0.6
1.2
1.4
0.4
0.4
1.4
1.5
3.98
4.98
0.1
0.26
0.26
±0.1
1.0
2.4
1.2
1.4
1.9
2.1
0.5
0.6
1.2
1.4
0.4
0.4
1.4
1.5
V
CC
−0.1
3.84
4.84
0.1
0.33
0.33
±1.0
10
2.4
Unit
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
μA
μA
mA
Negative−Going Threshold Voltage
V
T−
Minimum
Maximum
Hysteresis Voltage
V
H
Minimum
Maximum
Minimum High Level Output Voltage
V
OH
V
IN
= V
IH
or V
IL
V
CC
V
CC
−0.1
4.2
5.2
0
0.2
0.2
−
−
−
Minimum Low Level Output Voltage
V
OL
V
IN
= V
IH
Maximum Input Current
Maximum Quiescent Supply Current
I
IN
I
CC
V
IN
= V
CC
or GND, V
IH
or V
IL
V
IN
= V
CC
or GND, I
OUT
= 0μA
V
IN
= 2.4V or 0.5V
AC Electrical Characteristics:
(V
CC
= 5V, t
r
= t
f
= 6ns, C
L
= 15pF, T
A
= +25°C unless otherwise
specified)
Parameter
Maximum Propagation Delay
Symbol
t
PLH
, t
PHL
Test Conditions
Typ
10
Guaranteed Limits
18
Unit
ns
AC Electrical Characteristics:
(V
CC
= 5V
±10%,
t
r
= t
f
= 6ns, C
L
= 50pF unless otherwise
specified)
T
A
= +25°C
T
A
=
−40°
to +85°C
Parameter
Maximum Propagation Delay
Maximum Output Rise and Fall Time
Power Dissipation Capacitance
Maximum Input Capacitance
Symbol
t
PLH
, t
PHL
t
THL
, t
TLH
C
PD
C
IN
Test Conditions
Typ
−
9
Guaranteed Limits
20
15
25
10
25
19
−
10
Unit
ns
ns
pF
pF
Per Gate, Note 4
−
5
Note 4. C
PD
determines the no load dynamic power consumption, P
D
= C
PD
V
CC2
f + I
CC
V
CC
, and
the no load dynamic current consumption, I
S
= C
PD
V
CC
f + I
CC
.
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