ST 74LX1G126 User Manual
查询74LX1G126供应商
■ 5V TOLERANT INPUTS
■ HIGH SPEED: t
■ LOW POWER DISSIPATION:
I
=1µA(MAX.)atTA=25°C
CC
■ POWER DOWN PROTECTION ON INPUTS
AND OUTPUTS
■ SYMMETRICAL OUTPUTIMPEDANCE:
|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 Reten tion)
■ IMPROVED LATCH-UP IMMUNITY
= 4.5ns (MAX.) at VCC=3V
PD
74LX1G126
SINGLE BUS BUFFER (3-STATE)
SOT323-5LSOT23-5L
ORDER CODES
PACKAGE T & R
SOT23-5L 74LX1G126STR
SOT323-5L 74LX1G126CTR
DESCRIPTION
The 74LX1G126 is a low v oltage CMO S SING LE
BUS BUFFER fabricated with sub-micron silicon
gate and double-layer metal wiring C
2
MOS
technology.
3-STATE control inpu t G has to be set LOW to
place the out put into the high impedance state.
PIN CONNECTION AND IEC LOGIC SYMBOLS
Power down protection is provided on all inputs
and 0 to 7V can be accepted on inputs with no
regard to the supply voltage. This device can be
usedto interface 5V to 3V.
All inputs and outputs are equipped with
protection circuits against static discharge.
1/12April 2004
74LX1G126
INPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION TRUTH TABLE
PIN N° SYMBOL NAME AND FUNCTION
1 1G Output Enable Input
2 1A Data Input
4 1Y Data Output
3 GND Ground (0V)
5
V
CC
Positive Supply Voltage
X :Don’t Care
Z : High Impedance
AGY
XLZ
LHL
HHH
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
V
V
V
I
I
OK
I
I
or 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) I
absolute maximum rating must be observed
O
2) V
<GND,VO>V
O
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
CC
-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
2/12
74LX1G126
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
dt/dv Input Rise and Fall Time (note 2) 0 to 10 ns/V
1) Truth Table guaranteed: 1.2V to 3.6V
2) V
from0.8V to 2V at VCC=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=4.5to5.5V)
High or Low Level Output Current (VCC=3.0to3.6V)
High or Low Level Output Current (VCC=2.7to3.0V)
High or Low Level Output Current (VCC=2.3to2.7V)
High or Low Level Output Current (VCC=1.65to2.3V)
Operating Temperature
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
3/12
74LX1G126
DC SPECIFICATIONS
Test Condition Value
Symbol Parameter
V
V
V
High Level Input
IH
Voltage
V
Low Level Input
IL
Voltage
High Level Output
OH
Voltage
Low Level Output
OL
Voltage
High Impedance
I
OZ
Output Leakage
Current
I
Input Leakage
I
Current
I
Power Off Leakage
off
Current
I
Quiescent Supply
CC
Current
V
CC
(V)
1.65 to 1.95
3.0 to 5.5
1.65 to 1.95
3.0 to 5.5
1.65to4.5
1.65
2.3
3.0
4.5
1.65to4.5
1.65
2.3
3.0
4.5
3.6
1.65to5.5
0
1.65to5.5
3.6
-40 to 85 °C -55 to 125 °C
Min. Max. Min. Max.
0.75V
CC
0.7V
CC
0.7V
CC
0.25V
CC
0.3V
CC
0.3V
CC
IO=-100 µAVCC-0.1 VCC-0.1
=-4 mA
I
O
=-8 mA
I
O
I
=-16 mA
O
=-24 mA
I
O
I
=-32 mA
O
IO=100 µA
=4 mA
I
O
I
=8 mA
O
I
=16 mA
O
I
=24 mA
O
=32 mA
I
O
= 0 to 5.5V
V
I
= 0 to 5.5V
V
I
or VO=5.5V
V
I
VI=VCCor GND
or VO= 3.6 to 5.5V
V
I
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
± 10 ± 10 µA
± 10 ± 10 µA
10 10 µA
10 10
± 10 ± 10
0.75V
0.7V
0.7V
CC
CC
CC
0.25V
0.3V
0.3V
CC
CC
Unit
V2.3 to 2.7
CC
V2.3 to 2.7
V
V
µA
4/12
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