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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

µ

A (MAX.) at T

A

= 25°C

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

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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

Parameter²

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

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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

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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

µ

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

µ

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

µ

A

I

off

Power Off Leakage

Current

0

V

I

or V

O

= 5.5V

10

10

µ

A

I

CC

Quiescent Supply

Current

1.65 to 5.5

V

I

= V

CC

or GND

10

10

µ

A

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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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74LX1G14

6/11

TEST CIRCUIT

R

T

= Z

OUT

of pulse generator (typically 50

)

TEST CIRCUIT AND WAVEFORM SYMBOL VALUE

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

Symbol

V

CC

1.65 to 1.95V

2.3 to 2.7V

2.7 to 5.5V

C

L

15pF/30pF

15pF/30pF

15pF/50pF

R

L

1M

Ω/

1000

1M

Ω/

500

1M

Ω/

500

V

IH

V

CC

V

CC

V

CC

V

M

V

CC

/2

V

CC

/2

V

CC

/2

t

r

= t

f

<2.0ns

<2.0ns

<2.5ns

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74LX1G14

7/11

DIM.

mm.

mils

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

SOT23-5L MECHANICAL DATA

 

0

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74LX1G14

8/11

DIM.

mm.

mils

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

.65

25.6

e1

1.3

51.2

L

0.10

0.30

3.9

11.8

SOT323-5L MECHANICAL DATA

0

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74LX1G14

9/11

DIM.

mm.

inch

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

Tape & Reel SOT23-xL MECHANICAL DATA

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74LX1G14

10/11

DIM.

mm.

inch

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

Tape & Reel SOT323-xL MECHANICAL DATA

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74LX1G14

11/11

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mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information

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systems without express written approval of STMicroelectronics.

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