INTEGRATED CIRCUITS
74LVC125A
Quad buffer/line driver with 5-volt tolerant
inputs/outputs (3-State)
Product specification
Supersedes data of 1997 Aug 01
IC24 Data Handbook
1998 Apr 28
Philips
Semiconductors
Philips Semiconductors
Product specification
Quad buffer/line driver with 5-volt
tolerant inputs/outputs (3-state)
74LVC125A
FEATURES
•
5-volt tolerant inputs/outputs, for interfacing with 5-volt logic
•
Supply voltage range of 1.2V to 3.6V
•
Complies with JEDEC standard no. 8-1A
•
CMOS low power consumption
•
Direct interface with TTL levels
•
High impedance when V
CC
= 0V
QUICK REFERENCE DATA
GND = 0 V; T
amb
= 25°C; t
r
= t
f
≤
2.5 ns
SYMBOL
t
PHL
/t
PLH
C
I
C
PD
PARAMETER
Propagation delay
g
y
nA to nY
Input capacitance
Power dissipation capacitance per buffer
DESCRIPTION
The 74LVC125A is a high performance, low-power, low-voltage
Si-gate CMOS device and superior to most advanced CMOS
compatible TTL families.
Inputs can be driven from either 3.3V or 5.0V devices. In 3-state
operation, outputs can handle 5V.
The 74LVC125A consists of four non-inverting buffers/line drivers
with 3-state outputs. The 3-state outputs (nY) are controlled by the
output enable input (nOE). A HIGH at nOE causes the outputs to
assume a high impedance OFF-state.
CONDITIONS
C
L
= 50 pF;
V
CC
= 3.3 V
V
CC
= 3.3 V
Notes 1 and 2
TYPICAL
30
3.0
5.0
25
UNIT
ns
pF
pF
NOTES:
1. C
PD
is used to determine the dynamic power dissipation (P
D
in
µW)
P
D
= C
PD
×
V
CC2
×
f
i
)
(C
L
×
V
CC2
×
f
o
) where:
f
i
= input frequency in MHz; C
L
= output load capacity in pF;
f
o
= output frequency in MHz; V
CC
= supply voltage in V;
(C
L
×
V
CC2
×
f
o
) = sum of the outputs.
2. The condition is V
I
= GND to V
CC
ORDERING INFORMATION
PACKAGES
14-Pin Plastic SO
14-Pin Plastic SSOP Type II
14-Pin Plastic TSSOP Type I
TEMPERATURE RANGE
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
OUTSIDE NORTH AMERICA
74LVC125A D
74LVC125A DB
74LVC125A PW
NORTH AMERICA
74LVC125A D
74LVC125A DB
7LVC125APW DH
PKG. DWG. #
SOT108-1
SOT337-1
SOT402-1
1998 Apr 28
2
853-2010 19310
Philips Semiconductors
Product specification
Quad buffer/line driver with 5-volt
tolerant inputs/outputs (3-state)
74LVC125A
PIN CONFIGURATION
1OE
1A
1Y
2OE
2A
2Y
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
CC
4OE
4A
4Y
3OE
3A
3Y
FUNCTION TABLE
INPUTS
nOE
L
L
H
NOTES:
H = HIGH voltage level
L = LOW voltage level
X = don’t care
Z = high impedance OFF-state
nA
L
H
X
OUTPUT
nY
L
H
Z
SV00455
LOGIC SYMBOL (IEEE/IEC)
PIN DESCRIPTION
PIN
NUMBER
1, 4, 10, 13
2, 5, 9, 12
3, 6, 8, 11
7
14
SYMBOL
1OE – 4OE
1A – 4A
1Y – 4Y
GND
V
CC
NAME AND FUNCTION
1
2
1
3
EN1
5
6
4
9
8
10
Data enable inputs (active LOW)
Data inputs
Data Outputs
Ground (0 V)
Positive supply voltage
LOGIC SYMBOL
2
1A
1Y
3
12
11
13
1
5
1OE
SV00457
2A
2Y
6
4
9
2OE
3A
3Y
8
10
12
3OE
4A
4Y
11
13
4OE
SV00456
1998 Apr 28
3
Philips Semiconductors
Product specification
Quad buffer/line driver with 5-volt
tolerant inputs/outputs (3-state)
74LVC125A
RECOMMENDED OPERATING CONDITIONS
LIMITS
SYMBOL
PARAMETER
DC supply voltage (for max speed performance)
max.
V
CC
V
I
V
O
T
amb
t
r
, t
f
DC supply voltage (for low-voltage applications)
DC input voltage range
DC output voltage range; output HIGH or LOW
state
DC output voltage range; output 3-State
Operating ambient temperature range in free-air
Input rise and fall times
V
CC
= 1.2 to 2.7V
V
CC
= 2.7 to 3.6V
CONDITIONS
MIN
2.7
27
1.2
0
0
0
–40
0
0
MAX
3.6
36
V
3.6
5.5
V
CC
5.5
+85
20
10
°C
ns/V
V
V
UNIT
ABSOLUTE MAXIMUM RATINGS
1
In accordance with the Absolute Maximum Rating System (IEC 134)
Voltages are referenced to GND (ground = 0V)
SYMBOL
V
CC
I
IK
V
I
I
OK
V
O
I
OUT
I
GND
, I
CC
T
stg
P
TOT
PARAMETER
DC supply voltage
DC input diode current
DC input voltage
DC output diode current
DC output voltage; output HIGH or LOW state
DC output voltage; output 3-State
DC output source or sink current
DC V
CC
or GND current
Storage temperature range
Power dissipation per package
– plastic mini-pack (SO)
– plastic shrink mini-pack (SSOP and TSSOP)
above +70°C derate linearly with 8 mW/K
above +60°C derate linearly with 5.5 mW/K
V
I
t0
Note 2
V
O
uV
CC
or V
O
t
0
Note 2
Note 2
V
O
= 0 to V
CC
CONDITIONS
RATING
–0.5 to +6.5
–50
–0.5 to +6.5
"50
–0.5 to V
CC
+0.5
–0.5 to 6.5
"50
"100
–65 to +150
500
500
UNIT
V
mA
V
mA
V
mA
mA
°C
mW
NOTES:
1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability.
2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
1998 Apr 28
4
Philips Semiconductors
Product specification
Quad buffer/line driver with 5-volt
tolerant inputs/outputs (3-state)
74LVC125A
DC ELECTRICAL CHARACTERISTICS
Over recommended operating conditions voltages are referenced to GND (ground = 0V)
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
Temp = -40°C to +85°C
MIN
V
IH
HIGH level Input voltage
V
CC
= 1.2V
V
CC
= 2.7 to 3.6V
LOW level Input voltage
V
CC
= 1.2V
V
CC
= 2.7 to 3.6V
V
CC
= 2.7V; V
I
= V
IH
or V
IL
; I
O
= –12mA
V
O
OH
HIGH level output voltage
V
CC
= 3.0V; V
I
= V
IH
or V
IL
; I
O
= –100µA
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= –18mA
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= –24mA
V
CC
= 2.7V; V
I
= V
IH
or V
IL
; I
O
= 12mA
V
OL
LOW level output voltage
V
CC
= 3.0V; V
I
= V
IH
or V
IL
; I
O
= 100µA
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= 24mA
I
I
I
OZ
I
off
I
CC
∆I
CC
Input leakage current
3-State output OFF-state current
2
Power off leakage supply
Quiescent supply current
Additional quiescent supply current
per input pin
V
CC
= 3 6V; V
I
= 5 5V or GND
3.6V;
5.5V
V
CC
= 3.6V; V
I
= V
IH
or V
IL
; V
O
= 5.5V or GND
V
CC
= 0.0V; V
I
or V
O
= 5.5V
V
CC
= 3.6V; V
I
= V
CC
or GND; I
O
= 0
V
CC
= 2.7V to 3.6V; V
I
= V
CC
–0.6V; I
O
= 0
"0.1
"0
1
0.1
0.1
0.1
5
GND
V
CC
*0.5
V
CC
*0.2
V
CC
*0.6
V
CC
*0.8
0.40
0.20
0.55
"5
"5
"10
10
500
µA
µA
µA
µA
µA
V
V
CC
V
V
CC
2.0
GND
V
0.8
TYP
1
MAX
V
UNIT
V
IL
NOTE:
1. All typical values are at V
CC
= 3.3V and T
amb
= 25°C.
2. For I/O ports the parameter I
OZ
includes the input leakage current.
AC CHARACTERISTICS
GND = 0 V; t
r
= t
f
= 2.5 ns; C
L
= 50 pF; R
L
= 500W
LIMITS
SYMBOL
t
PHL
t
PLH
t
PZH
t
PZL
t
PHZ
t
PLZ
PARAMETER
Propagation delay
nA to nY
3-State output enable time
nOE to nY
3-State output disable time
nOE to nY
WAVEFORM
V
CC
= 3.3V
±0.3V
MIN
Figures 1, 3
Figures 2, 3
Figures 2, 3
1.5
1.5
1.5
TYP
1
3.0
3.8
3.7
MAX
4.8
5.7
5.2
V
CC
= 2.7V
MIN
1.5
1.5
1.5
MAX
5.5
6.7
6.2
V
CC
= 1.2V
TYP
12.0
13.0
8
ns
ns
ns
UNIT
NOTE:
1. These typical values are at V
CC
= 3.3V and T
amb
= 25°C.
1998 Apr 28
5
