ST 74LX1G125 User Manual
74LX1G125
SINGLE BUS BUFFER (3-STATE)
■5V TOLERANT INPUTS
■HIGH SPEED: tPD = 4.5ns (MAX.) at VCC = 3V
■LOW POWER DISSIPATION: ICC = 1μA (MAX.) at TA = 25°C
■POWER DOWN PROTECTION ON INPUTS AND OUTPUTS
■SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24mA (MIN) at VCC = 3V
■BALANCED PROPAGATION DELAYS: tPLH tPHL
■OPERATING VOLTAGE RANGE:
VCC(OPR) = 1.65V to 5.5V (1.2V Data Retention)
■IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The 74LX1G125 is a low voltage CMOS SINGLE BUS BUFFER fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology.
3-STATE control input G has to be set HIGH to place the output into the high impedance state.
SOT23-5L SOT323-5L
ORDER CODES
PACKAGE |
T & R |
SOT23-5L |
74LX1G125STR |
SOT323-5L |
74LX1G125CTR |
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 used to interface 5V to 3V.
All inputs and outputs are equipped with protection circuits against static discharge.
PIN CONNECTION AND IEC LOGIC SYMBOLS
January 2002 |
1/12 |
74LX1G125
INPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION |
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TRUTH TABLE |
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PIN No |
SYMBOL |
NAME AND FUNCTION |
A |
G |
Y |
1 |
1G |
Output Enable Input |
X |
H |
Z |
2 |
1A |
Data Input |
L |
L |
L |
4 |
1Y |
Data Output |
H |
L |
H |
3 |
GND |
Ground (0V) |
X : Don't Care |
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VCC |
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|
5 |
Positive Supply Voltage |
Z : High Impedance |
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ABSOLUTE MAXIMUM RATINGS
Symbol |
Parameter |
Value |
Unit |
VCC |
Supply Voltage |
-0.5 to +7.0 |
V |
VI |
DC Input Voltage |
-0.5 to +7.0 |
V |
VO |
DC Output Voltage (VCC = 0V) |
-0.5 to +7.0 |
V |
VO |
DC Output Voltage (High or Low State) (note 1) |
-0.5 to VCC + 0.5 |
V |
IIK |
DC Input Diode Current |
- 50 |
mA |
IOK |
DC Output Diode Current (note 2) |
- 50 |
mA |
IO |
DC Output Current |
± 50 |
mA |
ICC or IGND |
DC VCC or Ground Current per Supply Pin |
± 50 |
mA |
Tstg |
Storage Temperature |
-65 to +150 |
°C |
TL |
Lead Temperature (10 sec) |
300 |
°C |
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied
1)IO absolute maximum rating must be observed
2)VO < GND, VO > VCC
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RECOMMENDED OPERATING CONDITIONS
Symbol |
Parameter |
VCC |
Supply Voltage (note 1) |
VI |
Input Voltage |
VO |
Output Voltage (VCC = 0V) |
VO |
Output Voltage (High or Low State) |
IOH, IOL |
High or Low Level Output Current (VCC = 4.5 to 5.5V) |
IOH, IOL |
High or Low Level Output Current (VCC = 3.0 to 3.6V) |
IOH, IOL |
High or Low Level Output Current (VCC = 2.7 to 3.0V) |
IOH, IOL |
High or Low Level Output Current (VCC = 2.3 to 2.7V) |
IOH, IOL |
High or Low Level Output Current (VCC = 1.65 to 2.3V) |
Top |
Operating Temperqture |
dt/dv |
Input Rise and Fall Time (note 2) |
1)Truth Table guaranteed: 1.2V to 3.6V
2)VIN from 0.8V to 2V at VCC = 3.0V
74LX1G125
Value |
Unit |
1.65 to 5.5 |
V |
0 to 5.5 |
V |
0 to 5.5 |
V |
0 to VCC |
V |
± 32 |
mA |
± 24 |
mA |
± 12 |
mA |
± 8 |
mA |
± 4 |
mA |
-55 to 125 |
°C |
0 to 10 |
ns/V |
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74LX1G125
DC SPECIFICATIONS
Symbol |
Parameter |
VIH |
High Level Input |
|
Voltage |
VIL |
Low Level Input |
|
Voltage |
VOH |
High Level Output |
|
Voltage |
VOL |
Low Level Output |
|
Voltage |
IOZ |
High Impedance |
|
Output Leakage |
|
Current |
II |
Input Leakage |
|
Current |
Ioff |
Power Off Leakage |
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Current |
ICC |
Quiescent Supply |
|
Current |
|
Test Condition |
|
Value |
|
|
|
VCC |
-40 to 85 °C |
|
-55 to 125 °C |
Unit |
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(V) |
Min. |
Max. |
Min. |
Max. |
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|||||
1.65 to 1.95
2.3 to 2.7
3.0 to 5.5
1.65 to 1.95
2.3 to 2.7
3.0 to 5.5
1.65 to 3.6
1.65
2.3
2.7
3.0
4.5
1.65 to 3.6
1.65
2.3
2.7
3.0
4.5
3.6
1.65 to 5.5
0
1.65 to 5.5
3.6
|
0.75VCC |
0.75VCC |
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|
0.7VCC |
0.7VCC |
V |
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0.7VCC |
0.7VCC |
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0.25VCC |
0.25VCC |
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0.3VCC |
0.3VCC |
V |
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0.3VCC |
0.3VCC |
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IO=-100 μA |
VCC-0.1 |
VCC-0.1 |
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IO=-4 mA |
1.2 |
1.9 |
|
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IO=-8 mA |
1.9 |
2.2 |
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IO=-12 mA |
2.2 |
2.2 |
V |
|
IO=-16 mA |
2.4 |
2.4 |
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IO=-24 mA |
2.2 |
2.2 |
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IO=-32 mA |
3.8 |
3.8 |
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IO=100 μA |
0.1 |
0.1 |
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IO=4 mA |
0.45 |
0.45 |
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IO=8 mA |
0.3 |
0.3 |
V |
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IO=12 mA |
0.4 |
0.4 |
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IO=24 mA |
0.55 |
0.55 |
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IO=32 mA |
0.55 |
0.55 |
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VI = 0 to 5.5V |
± 10 |
± 10 |
μA |
|
VI = 0 to 5.5V |
± 10 |
± 10 |
μA |
|
VI or VO = 5.5V |
10 |
10 |
μA |
|
VI = VCC or GND |
10 |
10 |
μA |
|
VI or VO = 3.6 to 5.5V |
± 10 |
± 10 |
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