SGS Thomson Microelectronics 74LX1G125STR, 74LX1G125CTR Datasheet

1/12October 2002

■ 5V TOLERANT INPUTS

■ HIGH SPEED:t

PD

= 4. 5ns (MAX.) at VCC=3V

■ LOW POWER DISSIPATION:

I

CC

=1µA(MAX.)atTA=25°C

■ POWER DOWN PROTECTION ON INPUTS

AND OUTPUTS

■ SYMMETRICAL OUTPUT IMPEDANCE:

|I

OH

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

■ BALANCED PROPAGATION DELAYS:

t

PLH

≅ t

PHL

■ OPERATING VOLTAGE RANGE:

V

CC

(OPR) = 1.65V to 5.5V

(1.2V Data Retention)

■ IMPROVED LATCH-UP IMMUNITY

DESCRIPTION

The 74LX 1G125 is a low v olt age CMOS SINGLE
BUS B UFF ER fabricated with sub-micron silicon
gate and double-layer metal wiring C

2

MOS
technology.
3-STATE control input G

has to be set HIGH to

place the output into the high impedance state.

Power down prot ection is provided on all inputs
and 0 to 7V c an be accepted on inp uts with no
regard to the supply voltage. This device can be
usedto interface5V to 3V.
All inputs and outputs are equipped with
protection circuits against static discharge.

74LX1G125

SINGLE BUS BUFFER (3-STATE)

PIN CONNECTION AND IEC LOGIC SYMBOLS

ORDER CODES

PACKAGE T & R

SOT23-5L 74LX1G125STR

SOT323-5L 74LX1G125CTR

SOT323-5LSOT23-5L

74LX1G125

2/12

INPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION TRUTH TABLE

X : Don’tCare
Z : High Impedance

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) I

O

absolute maximum rating must be observed

2) V

O

<GND,VO>V

CC

PIN No SYMBOL NAME AND FUNCTION

11G

Output Enable Input
2 1A Data Input
4 1Y Data Output
3 GND Ground (0V)
5

V

CC

Positive Supply Voltage

AGY

XHZ

LLL

HLH

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 (VCC= 0V)

-0.5 to +7.0 V

V

O

DC Output Voltage (High or Low State) (note 1) -0.5 to VCC+ 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 VCCor Ground Current per Supply Pin

± 50 mA

T

stg

Storage Temperature

-65 to +150 °C

T

L

Lead Temperature (10 sec)

300 °C

74LX1G125

3/12

RECOMMENDED OPERATING CONDITIONS

1) Truth Table guaranteed: 1.2V to 3.6V

2) V

IN

from0.8V to 2V atVCC=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 (VCC= 0V)

0 to 5.5 V

V

O

Output Voltage (High or Low State) 0 to V

CC

V

I

OH,IOL

High or Low Level Output Current (VCC= 4.5 to 5.5V)

± 32 mA

I

OH,IOL

High or Low Level Output Current (VCC= 3.0 to 3.6V)

± 24 mA

I

OH,IOL

High or Low Level Output Current (VCC= 2.7 to 3.0V)

± 12 mA

I

OH,IOL

High or Low Level Output Current (VCC= 2.3 to 2.7V)

± 8mA

I

OH,IOL

High or Low Level Output Current (VCC= 1.65 to 2.3V)

± 4mA

T

op

Operating Temperqture

-55 to 125 °C

dt/dv Input Rise and Fall Time (note 2) 0 to 10 ns/V

74LX1G125

4/12

DC SPECIFICATIONS

Symbol Parameter

Test Condition Value

Unit

V

CC

(V)

-40 to 85 °C -55 to 125 °C

Min. Max. Min. Max.

V

IH

High Level Input
Voltage

1.65 to 1.95

0.75V

CC

0.75V

CC

V2.3 to 2.7

0.7V

CC

0.7V

CC

3.0 to 5.5

0.7V

CC

0.7V

CC

V

IL

Low Level Input
Voltage

1.65 to 1.95

0.25V

CC

0.25V

CC

V2.3 to 2.7

0.3V

CC

0.3V

CC

3.0 to 5.5

0.3V

CC

0.3V

CC

V

OH

High Level Output
Voltage

1.65 to 4.5

IO=-100 µAVCC-0.1 VCC-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

IO=100 µA

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

I

OZ

High Impedance
Output Leakage
Current

3.6

V

I

= 0 to 5.5V

± 10 ± 10 µA

I

I

Input Leakage
Current

1.65 to 5.5

V

I

= 0 to 5.5V

± 10 ± 10 µA

I

off

Power Off Leakage
Current

0

V

I

or VO= 5.5V

10 10 µA

I

CC

Quiescent Supply
Current

1.65 to 5.5

VI=VCCor GND

10 10

µA

3.6

V

I

or VO= 3.6 to 5.5V

± 10 ± 10

74LX1G125

5/12

AC ELECTRICAL CHARACTERISTICS (Input tr=tf=3ns)

CAPACITIVE CHARACTERISTICS

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

CC(opr)=CPDxVCCxfIN+ICC

Symbol Parameter

Test Condition Value

Unit

V

CC

(V)

C

L

(pF)

R

L

(Ω)

t

s

= t

r

(ns)

-40 to 85 °C -55 to 125 °C

Min. Max. Min. Max.

t

PLHtPHL

Propagation Delay
Time

1.65 to 1.95
15 1MΩ 3.0

2 12.0 2 12.0

ns

2.3 to 2.7 2 7.0 2 7.0

3.0 to 3.6 1 4.7 1 4.7

4.5 to 5.5 1 4.1 1 4.1

1.65 to 1.95 30 1000 2.0 2 8.0 2 8.0

2.3 to 2.7 30 500 2.0 2 5.5 2 5.5

2.7 50 500 2.5 1 5.2 1 5.2

3.0 to 3.6 50 500 2.5 1 4.5 1 4.5

4.5 to 5.5 50 500 2.5 1 4.0 1 4.0

t

PLZtPHZ

Output Disable Time 1.65 to 1.95

15 1MΩ 3.0

2 12.0 2 12.0

ns

2.3 to 2.7 2 7.0 2 7.0

3.0 to 3.6 1 5.5 1 5.5

4.5 to 5.5 1 5.0 1 5.0

1.65 to 1.95 30 1000 2.0 2 9.2 2 9.2

2.3 to 2.7 30 500 2.0 2 5.5 2 5.5

2.7 50 500 2.5 1 5.2 1 5.2

3.0 to 3.6 50 500 2.5 1 5.0 1 5.0

4.5 to 5.5 50 500 2.5 1 4.2 1 4.2

t

PZLtPZH

Output Enable Time 1.65 to 1.95

15 1MΩ 3.0

2 12.0 2 12.0

ns

2.3 to 2.7 2 7.0 2 7.0

3.0 to 3.6 1 6.0 1 6.0

4.5 to 5.5 1 5.5 1 5.5

1.65 to 1.95 30 1000 2.0 2 9.4 2 9.4

2.3 to 2.7 30 500 2.0 2 6.6 2 6.6

2.7 50 500 2.5 1 5.6 1 5.6

3.0 to 3.6 50 500 2.5 1 5.3 1 5.3

4.5 to 5.5 50 500 2.5 1 5.0 1 5.0

Symbol Parameter

Test Condition Value

Unit

V

CC

(V)

T

A

=25°C

Min. Typ. Max.

C

IN

Input Capacitance VIN= 0 or V

CC

4pF

C

OUT

Output Capacitance VIN= 0 or V

CC

510pF

C

PD

Power Dissipation Capacitance
(note 1)

1.8 fIN= 10MHz 18
pF2.5 18

3.3 21

74LX1G125

6/12

TEST CIRCUIT

RT=Z

OUT

of pulse generator (typically 50Ω)

TEST CIRCUIT AND WAV E FORM SYMBOL VALUE

WAVEFORM 1 : PROPAGATION DE L AYS (f=1MHz; 50% d uty 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=R1

1MΩ/1000Ω 1MΩ/500Ω 1MΩ/500Ω

V

IH

V

CC

V

CC

V

CC

V

M

VCC/2 VCC/2 VCC/2

t

r=tr

<2.0ns <2.0ns <2.5ns

74LX1G125

7/12

WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle)

74LX1G125

8/12

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

e0.95 37.4

e1 1.9 74.8

L 0.35 0.55 13.7 21.6

SOT23-5L MECHANICAL DATA

74LX1G125

9/12

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

e0.65 25.6

e1 1.3 51.2

L 0.10 0.30 3.9 11.8

SOT323-5L MECHANICAL DATA

74LX1G125

10/12

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

74LX1G125

11/12

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

74LX1G125

12/12

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