1/13
April 2004
s
5V TOLERANT INPUTS
s
HIGH SPEED: t
PD
= 4.7ns (MAX.) at V
CC
= 3V
s
LOW POWER DISSIPATION:
I
CC
= 1
A (MAX.) at T
A
= 25C
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
WIDE OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 1.65V to 5.5V
(1.2V Data Retention)
s
LATCH-UP PERFORMANCE EXCEED
300mA
s
RoHS FLIP-CHIP AND SOT PACKAGES
DESCRIPTION
The 74LX1G125 is a low voltage CMOS SINGLE
BUS BUFFER 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 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 or lower power supply
systems. The sub-micron CMOS technology used
allow ultra low power consumption and guarantee
optimized operations between 2.8V and 1.8V
system, as Smart Phone, Digital Still Camera,
PDA, Notebook, or each other battery powered
equipment.
All
inputs
and
outputs
are
equipped
with
protection circuits against ESD discharge.
74LX1G125
SINGLE BUS BUFFER (3-STATE)
PIN CONNECTION AND IEC LOGIC SYMBOLS (top view for SOT, top through view for Flip-Chip)
ORDER CODES
PACKAGE
T & R
SOT23-5L
74LX1G125STR
SOT323-5L
74LX1G125CTR
Flip-Chip5
74LX1G125BJR
SOT323-5L
Flip-Chip5
(Max dim = 1.3x1.3mm)
SOT23-5L
74LX1G125
2/13
INPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE
X : Don't Care
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
SOT23-5L PIN N
Flip-Chip PIN N
SYMBOL
NAME AND FUNCTION
1
5
1G
Output Enable Input
2
1
1A
Data Input
4
3
1Y
Data Output
3
2
GND
Ground (0V)
5
4
V
CC
Positive Supply Voltage
A
G
Y
X
H
Z
L
L
L
H
L
H
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 (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)
260
C
74LX1G125
3/13
RECOMMENDED OPERATING CONDITIONS
1) Truth Table guaranteed: 1.2V to 5.5V
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 Temperature
-55 to 125
C
dt/dv
Input Rise and Fall Time
(V
CC
= 3.0 to 5.5V) (note 2)
0 to 10
ns/V
(V
CC
= 1.65 to 2.7V) (note 2)
0 to 20
74LX1G125
4/13
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
V
2.3 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
V
2.3 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
I
O
=-100
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
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
I
OZ
High Impedance
Output Leakage
Current
3.6
V
I
= 0 to 5.5V
10
10
A
I
I
Input Leakage
Current
1.65 to 5.5
V
I
= 0 to 5.5V
5
5
A
I
off
Power Off Leakage
Current
0
V
I
or V
O
= 5.5V
10
10
A
I
CC
Quiescent Supply
Current
1.65 to 5.5
V
I
= V
CC
or GND
10
10
A
3.6
V
I
or V
O
= 3.6 to 5.5V
10
10
74LX1G125
5/13
AC ELECTRICAL CHARACTERISTICS
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
10.0
2
11.0
ns
2.3 to 2.7
2
7.0
2
8.0
3.0 to 3.6
1
4.7
1
5.7
4.5 to 5.5
1
4.1
1
5.1
1.65 to 1.95
30
1000
2.0
2
11.0
2
12.0
2.3 to 2.7
30
500
2.0
2
7.5
2
8.5
2.7
50
500
2.5
1
5.5
1
6.5
3.0 to 3.6
50
500
2.5
1
5.2
1
6.2
4.5 to 5.5
50
500
2.5
1
4.2
1
5.2
t
PLZ
t
PHZ
Output Disable Time 1.65 to 1.95
15
1M
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
PZL
t
PZH
Output Enable Time
1.65 to 1.95
15
1M
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
V
IN
= 0 or V
CC
4
pF
C
OUT
Output Capacitance
V
IN
= 0 or V
CC
5
10
pF
C
PD
Power Dissipation Capacitance
(note 1)
1.8
f
IN
= 10MHz
18
pF
2.5
18
3.3
21
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