1/11
December 2002
s
5V TOLERANT INPUTS
s
HIGH SPEED: t
PD
= 7.5ns (MAX.) at V
CC
= 3V
s
LOW POWER DISSIPATION:
I
CC
= 1
A (MAX.) at T
A
= 25C
s
TYPICAL HYSTERESIS: V
h
=1V at V
CC
=4.5V
s
POWER DOWN PROTECTION ON INPUTS
AND OUTPUTS
s
SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 24mA (MIN) at V
CC
= 3V
s
BALANCED PROPAGATION DELAYS:
t
PLH
t
PHL
s
OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 1.65V to 5.5V
(1.2V Data Retention)
s
IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The 74LX1G14 is a low voltage CMOS SINGLE
SCHMITT INVERTER fabricated with sub-micron
silicon gate and double-layer metal wiring C
2
MOS
technology.
It is ideal for 1.65 to 5.5 V
CC
operations and low
power and low noise applications. The internal
circuit is composed of 3 stages including buffer
output, which provide high noise immunity and
stable output.
Power down protection is provided on input and
output and 0 to 7V can be accepted on inputs with
no regard to the supply voltage. It can be
interfaced to 5V signal environment for inputs in
mixed 3.3/5V system.
Pin configuration and function are the same as
those of the 74LX1G04 but the 74LX1G14 has
hysteresis.
This together with its schmitt trigger function
allows it to be used on line receivers with slow
rise/fall input signals.
The input is equipped with protection circuits
against static discharge, giving it ESD immunity
and transient excess voltage.
74LX1G14
LOW VOLTAGE CMOS SINGLE SCHMITT INVERTER
WITH 5V TOLERANT INPUT
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
PACKAGE
T & R
SOT23-5L
74LX1G14STR
SOT323-5L
74LX1G14CTR
SOT323-5L
SOT23-5L
74LX1G14
2/11
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
1) Truth Table guaranteed: 1.2V to 3.6V
2) V
IN
from 0.8V to 2V at V
CC
= 3.0V
PIN No
SYMBOL
NAME AND FUNCTION
1
NC
Not Connected
2
1A
Data Input
4
1Y
Data Output
3
GND
Ground (0V)
5
V
CC
Positive Supply Voltage
A
Y
L
H
H
L
Symbol
Parameter
Value
Unit
V
CC
Supply Voltage
-0.5 to +7.0
V
V
I
DC Input Voltage
-0.5 to +7.0
V
V
O
DC Output Voltage (V
CC
= 0V)
-0.5 to +7.0
V
V
O
DC Output Voltage (High or Low State) (note 1)
-0.5 to V
CC
+ 0.5
V
I
IK
DC Input Diode Current
- 50
mA
I
OK
DC Output Diode Current (note 2)
- 50
mA
I
O
DC Output Current
50
mA
I
CC
or I
GND
DC V
CC
or Ground Current per Supply Pin
50
mA
T
stg
Storage Temperature
-65 to +150
C
T
L
Lead Temperature (10 sec)
300
C
74LX1G14
3/11
RECOMMENDED OPERATING CONDITIONS
1) Truth Table guaranteed: 1.2V to 3.6V
2) V
IN
from 0.8V to 2V at V
CC
= 3.0V
Symbol
Parameter
Value
Unit
V
CC
Supply Voltage (note 1)
1.65 to 5.5
V
V
I
Input Voltage
0 to 5.5
V
V
O
Output Voltage (V
CC
= 0V)
0 to 5.5
V
V
O
Output Voltage (High or Low State)
0 to V
CC
V
I
OH
, I
OL
High or Low Level Output Current (V
CC
= 4.5 to 5.5V)
32
mA
I
OH
, I
OL
High or Low Level Output Current (V
CC
= 3.0 to 3.6V)
24
mA
I
OH
, I
OL
High or Low Level Output Current (V
CC
= 2.7 to 3.0V)
12
mA
I
OH
, I
OL
High or Low Level Output Current (V
CC
= 2.3 to 2.7V)
8
mA
I
OH
, I
OL
High or Low Level Output Current (V
CC
= 1.65 to 2.3V)
4
mA
T
op
Operating Temperqture
-55 to 125
C
74LX1G14
4/11
DC SPECIFICATIONS
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
-40 to 85 C
-55 to 125 C
Min.
Max.
Min.
Max.
V
T+
Positive Input
threshold
1.65
0.79
1.16
0.79
1.16
V
2.3
1.11
1.56
1.11
1.56
3
1.5
1.87
1.5
1.87
4.5
2.16
2.74
2.16
2.74
5.5
2.61
3.33
2.61
3.33
V
T-
Negative Input
threshold
1.65
0.39
0.62
0.39
0.62
V
2.3
0.58
0.87
0.58
0.87
3
0.84
1.14
0.84
1.14
4.5
1.41
1.79
1.41
1.79
5.5
1.87
2.29
1.87
2.29
V
OH
High Level Output
Voltage
1.65 to 4.5
I
O
=-100
A
V
CC
-0.1
V
CC
-0.1
V
1.65
I
O
=-4 mA
1.2
1.2
2.3
I
O
=-8 mA
1.9
1.9
3.0
I
O
=-16 mA
2.4
2.4
I
O
=-24 mA
2.2
2.2
4.5
I
O
=-32 mA
3.8
3.8
V
OL
Low Level Output
Voltage
1.65 to 4.5
I
O
=100
A
0.1
0.1
V
1.65
I
O
=4 mA
0.45
0.45
2.3
I
O
=8 mA
0.3
0.3
3.0
I
O
=16 mA
0.4
0.4
I
O
=24 mA
0.55
0.55
4.5
I
O
=32 mA
0.55
0.55
V
H
Hysteresis Voltage
1.65
0.37
0.62
0.37
0.62
V
2.3
0.48
0.77
0.48
0.77
3
0.56
0.87
0.56
0.87
4.5
0.71
1.04
0.71
1.04
5.5
0.71
1.11
0.71
1.11
I
I
Input Leakage
Current
1.65 to 5.5
V
I
= 0 to 5.5V
10
10
A
I
off
Power Off Leakage
Current
0
V
I
or V
O
= 5.5V
10
10
A
I
CC
Quiescent Supply
Current
1.65 to 5.5
V
I
= V
CC
or GND
10
10
A
74LX1G14
5/11
AC ELECTRICAL CHARACTERISTICS
(*) Voltage range is 3.3V
0.3V
(**) Voltage range is 5.0V
0.5V
CAPACITIVE CHARACTERISTICS
1) C
PD
is defined as the value of the IC's internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
CC(opr)
= C
PD
x V
CC
x f
IN
+ I
CC
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
C
L
(pF)
R
L
(
)
t
s
= t
r
(ns)
-40 to 85 C
-55 to 125 C
Min.
Max.
Min.
Max.
t
PLH
t
PHL
Propagation Delay
Time
1.65 to 1.95
15
1M
3.0
2
15.6
2
15.6
ns
2.3 to 2.7
1
9.5
1
9.5
3.0 to 3.6
1
6.5
1
6.5
4.5 to 5.5
0.5
5.5
0.5
5.5
1.65 to 1.95
30
1000
2.0
1.5
10
1.5
10
2.3 to 2.7
30
500
2.0
2
5.5
2
5.5
2.7
50
500
2.5
1.5
5.5
1.5
5.5
3.0 to 3.6
50
500
2.5
1.5
7.5
1.5
7.5
4.5 to 5.5
50
500
2.5
0.8
6.2
0.8
6.2
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
T
A
= 25 C
Min.
Typ.
Max.
C
IN
Input Capacitance
0
4
pF
C
PD
Power Dissipation Capacitance
(note 1)
1.8
f
IN
= 10MHz
12
pF
2.5
18
3.3
24
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