Datasheet 74LX1G14 Datasheet (ST)

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LOW VOLTAGE CMOS SINGLE SCHMITT INVERTER

■ 5V TOLERANT INPUTS

■ HIGH SPEED:t

■ LOW POWER DISSIPATION:

I

=1µA(MAX.)atTA=25°C

CC

■ TYPICAL HYSTERESIS: V

■ POWER DOWN PROTECTION ON INPUTS

AND OUTPUTS

■ SYMMETRICAL OUTPUT IMPEDANCE:

|I

|=IOL= 24mA (MIN) at VCC=3V

OH

■ BALANCED PROPAGATION DELAYS:

t

≅ t

PLH

PHL

■ OPERATING VOLTAGE RANGE:

V

(OPR) = 1.65V to 5.5V

CC

(1.2V Data Retention)

■ IMPROVED LATCH-UP IMMUNITY

DESCRIPTION

The 74LX 1G14 is a low voltag e CMOS SING LE
SCHMITT INVERTER f abricated with sub-micron
silicon gate and double -layer metal wiring C
technology.
It is ideal f or 1.65 to 5.5 V
power and low noise applications. The internal
circuit is composed of 3 stages including buffer
output, which provide high noise immunity and
stable output.
Powerdownprotectionisprovidedoninputand
output and 0 to 7V can be accepted on inputs with

= 7. 5ns (MAX.) at VCC=3V

PD

=1V at VCC=4.5V

h

operations and low

CC

2

MOS

74LX1G14

WITH 5V TOLERANT INPUT

SOT323-5LSOT23-5L

ORDER CODES

PACKAGE T & R

SOT23-5L 74LX1G14STR

SOT323-5L 74LX1G14CTR

no regard to the supply voltage. It c an be
interfaced t o 5V signal environment for inputs in
mixed 3.3/5V system.
Pin configuration and func tion 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.

PIN CONNECTION AND IEC LOGIC SYMBOLS

1/11December 2002

74LX1G14

INPUT AND O UTPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION TRUTH TABLE

PIN No SYMBOL NAME AND FUNCTION

1 NC Not Connected
2 1A Data Input

AY

LH

HL
4 1Y Data Output
3 GND Ground (0V)
5

V

CC

Positive Supply Voltage

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter² Value Unit

V

V
V
V

I

I

OK

I

or I

I

CC

T

T

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

from0.8V to 2V at VCC=3.0V

IN

Supply Voltage

CC

DC Input Voltage

I

DC Output Voltage (VCC= 0V)

O

DC Output Voltage (High or Low State) (note 1) -0.5 to VCC+ 0.5

O

DC Input Diode Current

IK

DC Output Diode Current (note 2)
DC Output Current

O

DC VCCor Ground Current per Supply Pin

GND

Storage Temperature

stg

Lead Temperature (10 sec)

L

-0.5 to +7.0 V

-0.5 to +7.0 V

-0.5 to +7.0 V
V

-50 mA

-50 mA

± 50 mA
± 50 mA

-65 to +150 °C

300 °C

2/11

74LX1G14

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Value Unit

V

V
V
V

I

OH,IOL

I

OH,IOL

I

OH,IOL

I

OH,IOL

I

OH,IOL

T

1) Truth Table guaranteed: 1.2V to 3.6V

2) V

from0.8V to 2V atVCC=3.0V

IN

Supply Voltage (note 1)

CC

Input Voltage

I

Output Voltage (VCC= 0V)

O

Output Voltage (High or Low State) 0 to V

O

High or Low Level Output Current (VCC= 4.5 to 5.5V)
High or Low Level Output Current (VCC= 3.0 to 3.6V)
High or Low Level Output Current (VCC= 2.7 to 3.0V)
High or Low Level Output Current (VCC= 2.3 to 2.7V)
High or Low Level Output Current (VCC= 1.65 to 2.3V)
Operating Temperqture

op

1.65 to 5.5 V
0to5.5 V
0to5.5 V

CC

± 32 mA
± 24 mA
± 12 mA

± 8mA
± 4mA

-55 to 125 °C

V

3/11

74LX1G14

DC SPECIFICATIONS

Test Condition Value

Symbol Parameter

V

V

V

I

Positive Input

T+

threshold

V

Negative Input

T-

threshold

High Level Output

OH

Voltage

Low Level Output

OL

Voltage

Hysteresis Voltage 1.65 0.37 0.62 0.37 0.62

V

H

I

Input Leakage

I

Current

I

Power Off Leakage

off

Current
Quiescent Supply

CC

Current

V

CC

(V)

-40 to 85 °C -55 to 125 °C

Min. Max. Min. Max.

1.65 0.79 1.16 0.79 1.16

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

1.65 0.39 0.62 0.39 0.62

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

=-100 µAVCC-0.1 VCC-0.1

1.65 to 4.5

1.65

2.3

3.0

4.5

1.65 to 4.5

1.65

2.3

3.0

4.5

I

O

=-4 mA

I

O

=-8 mA

I

O

I

=-16 mA

O

=-24 mA

I

O

=-32 mA

I

O

IO=100 µA

=4 mA

I

O

=8 mA

I

O

I

=16 mA

O

=24 mA

I

O

I

=32 mA

O

1.2 1.2

1.9 1.9

2.4 2.4

2.2 2.2

3.8 3.8

0.1 0.1

0.45 0.45

0.3 0.3

0.4 0.4

0.55 0.55

0.55 0.55

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

= 0 to 5.5V

1.65 to 5.5

0

1.65 to 5.5

V

I

or VO= 5.5V

V

I

V

I=VCC

or GND

± 10 ±10 µA

10 10 µA

10 10 µA

Unit

V

V

V

V

V

4/11

AC ELECTRICAL CHARACTERISTICS

74LX1G14

Test Condition Value

Symbol Parameter

t

PLHtPHL

Propagation Delay
Time

V

(V)

CC

C

(pF)

R

L

(Ω)

= t

t

L

s

(ns)

1.65 to 1.95

2.3 to 2.7 1 9.5 1 9.5

3.0 to 3.6 1 6.5 1 6.5

15 1MΩ 3.0

-40 to 85 °C -55 to 125 °C

r

Min. Max. Min. Max.

215.6215.6

Unit

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

ns

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

(*) Voltage range is3.3V ± 0.3V
(**) Voltage range is 5.0V ± 0.5V

CAPACITIVE CHARACTERISTICS

Test Condition Value

=25°C

Symbol Parameter

V

CC

(V)

C

C

Input Capacitance

IN

Power Dissipation Capacitance

PD

(note 1)

04pF

1.8 fIN= 10MHz 12

3.3 24

1) CPDis 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

T

A

Min. Typ. Max.

CC(opr)=CPDxVCCxfIN+ICC

Unit

pF2.5 18

5/11

74LX1G14

TEST CIRCUIT

RT=Z

of pulse generator (typically 50Ω)

OUT

TEST CIRCUIT AND WAV EFOR M SYMBOL VALUE

Symbol

C

L

R

L

V

IH

V

M

t

r=tf

1.65 to 1.95V 2.3 to 2.7V 2.7 to 5.5V

15pF/30pF 15pF/30pF 15pF/50pF

1MΩ/1000Ω 1MΩ/500Ω 1MΩ/500Ω

V

CC

VCC/2 VCC/2 VCC/2

<2.0ns <2.0ns <2.5ns

V

V

WAVEFORM: PROPAGATION DELAY (f=1MHz; 50% duty cycle)

CC

CC

V

CC

6/11

74LX1G14

SOT23-5L MECHANICAL DATA

mm. mils

DIM.

MIN. TYP MAX. MIN. TYP. MAX.

A 0.90 1.45 35.4 57.1

A1 0.00 0.15 0.0 5.9

A2 0.90 1.30 35.4 51.2

b 0.35 0.50 13.7 19.7

C 0.09 0.20 3.5 7.8

D 2.80 3.00 110.2 118.1

E 2.60 3.00 102.3 118.1

E1 1.50 1.75 59.0 68.8

e.95 37.4

e1 1.9 74.8

L 0.35 0.55 13.7 21.6

0

7/11

74LX1G14

SOT323-5L MECHANICAL DATA

mm. mils

DIM.

MIN. TYP MAX. MIN. TYP. MAX.

A 0.80 1.10 31.5 43.3

A1 0.00 0.10 0.0 3.9

A2 0.80 1.00 31.5 39.4

b 0.15 0.30 5.9 11.8

C 0.10 0.18 3.9 7.1

D 1.80 2.20 70.9 86.6

E 1.80 2.40 70.9 94.5

E1 1.15 1.35 45.3 53.1

e

e1 1.3 51.2

L 0.10 0.30 3.9 11.8

.65

0

25.6

8/11

Tape & Reel SOT23-xL MECHANICAL DATA

74LX1G14

DIM.

MIN. TYP MAX. MIN. TYP. MAX.

A 180 7.086
C 12.8 13.0 13.2 0.504 0.512 0.519
D 20.2 0.795
N 60 2.362

T 14.4 0.567

Ao 3.13 3.23 3.33 0.123 0.127 0.131
Bo 3.07 3.17 3.27 0.120 0.124 0.128
Ko 1.27 1.37 1.47 0.050 0.054 0.0.58
Po 3.9 4.0 4.1 0.153 0.157 0.161

P 3.9 4.0 4.1 0.153 0.157 0.161

mm. inch

9/11

74LX1G14

Tape & Reel SOT323-xL MECHANICAL DATA

DIM.

MIN. TYP MAX. MIN. TYP. MAX.

A 175 180 185 6.889 7.086 7.283

C 12.8 13 13.2 0.504 0.512 0.519

D 20.2 0.795

N 59.5 60 60.5 2.362

T 14.4 0.567

Ao 2.25 0.088
Bo 2.7 0.106
Ko 1.2 0.047
Po 3.98 4 4.2 0.156 0.157 0.165

P 3.98 4 4.2 0.156 0.157 0.165

mm. inch

10/11

74LX1G14

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