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
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