Philips
Semiconductors
74LV245
Octal bus transceiver (3-State)
Product specification
Supersedes data of 1997 Feb 19
IC24 Data Handbook
1998 Apr 20
INTEGRATED CIRCUITS
Philips Semiconductors
Product specification
74LV245
Octal bus transceiver (3-State)
2
1998 Apr 20
8531931 19258
FEATURES
Wide operating voltage: 1.0 to 5.5 V
Optimized for low voltage applications: 1.0 to 3.6 V
Accepts TTL input levels between V
CC
= 2.7 V and V
CC
= 3.6 V
Typical V
OLP
(output ground bounce) < 0.8 V at V
CC
= 3.3 V,
T
amb
= 25
C
Typical V
OHV
(output V
OH
undershoot) > 2 V at V
CC
= 3.3 V,
T
amb
= 25
C
Output capability: bus driver
I
CC
category: MSI
DESCRIPTION
The 74LV245 is a low-voltage Si-gate CMOS device and is pin and
function compatible with 74HC/HCT245.
The 74LV245 is an octal transceiver featuring non-inverting 3-State
bus compatible outputs in both send and receive directions. The
74LV245 features an output enable (OE) input for easy cascading
and a send/receive (DIR) input for direction control. OE controls the
outputs so that the buses are effectively isolated.
QUICK REFERENCE DATA
GND = 0 V; T
amb
= 25
C; t
r
= t
f
2.5 ns
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
t
PHL
/t
PLH
Propagation delay
A
n
to B
n
; B
n
to A
n
C
L
= 15 pF;
V
CC
= 3.3 V
7.0
ns
C
I
Input capacitance
3.5
pF
C
I/O
Input/output capacitance
10
pF
C
PD
Power dissipation capacitance per buffer
V
CC
= 3.3 V
V
I
= GND to V
CC
, note 1
40
pF
NOTE:
1. C
PD
is used to determine the dynamic power dissipation (P
D
in
W)
P
D
= C
PD
V
CC
2
f
i
)
(C
L
V
CC
2
f
o
) where:
f
i
= input frequency in MHz; C
L
= output load capacitance in pF;
f
o
= output frequency in MHz; V
CC
= supply voltage in V;
(C
L
V
CC
2
f
o
) = sum of the outputs.
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
OUTSIDE NORTH AMERICA
NORTH AMERICA
PKG. DWG. #
20-Pin Plastic DIL
40
C to +125
C
74LV245 N
74LV245 N
SOT146-1
20-Pin Plastic SO
40
C to +125
C
74LV245 D
74LV245 D
SOT163-1
20-Pin Plastic SSOP Type II
40
C to +125
C
74LV245 DB
74LV245 DB
SOT339-1
20-Pin Plastic TSSOP Type I
40
C to +125
C
74LV245 PW
74LV245PW DH
SOT360-1
PIN DESCRIPTION
PIN NUMBER
SYMBOL
FUNCTION
1
DIR
Direction
2, 3, 4, 5,
6, 7, 8, 9
A
0
to A
7
Data inputs/outputs
10
GND
Ground (0 V)
18, 17, 16, 15,
14, 13, 12, 11
B
0
to B
7
Data inputs/outputs
19
OE
Output enable input (active LOW)
20
V
CC
Positive supply voltage
FUNCTION TABLE
INPUTS
INPUTS/OUTPUT
OE
DIR
A
n
B
n
L
L
A = B
Inputs
L
H
Inputs
B = A
H
X
Z
Z
NOTES:
H =
HIGH voltage level
L
=
LOW voltage level
X =
don't care
Z =
high impedance OFF-state
Philips Semiconductors
Product specification
74LV245
Octal bus transceiver (3-State)
1998 Apr 20
3
PIN CONFIGURATION
SV00624
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
DIR
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
GND
B
7
B
6
B
5
B
4
B
3
B
2
B
1
B
0
OE
V
CC
LOGIC SYMBOL (IEEE/IEC)
SV00626
G3
3EN1
3EN2
19
1
1
2
18
2
3
17
4
16
5
15
6
14
7
13
8
12
9
11
LOGIC SYMBOL
5
SV00625
A
0
DIR
B
0
OE
A
1
B
1
A
2
B
2
A
3
B
3
A
4
B
4
A
5
B
5
A
6
B
6
A
7
B
7
1
2
3
4
6
7
8
9
19
18
17
16
15
14
13
12
11
Philips Semiconductors
Product specification
74LV245
Octal bus transceiver (3-State)
1998 Apr 20
4
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP.
MAX
UNIT
V
CC
DC supply voltage
See Note 1
1.0
3.3
5.5
V
V
I
Input voltage
0
V
CC
V
V
O
Output voltage
0
V
CC
V
T
amb
Operating ambient temperature range in free air
See DC and AC
characteristics
40
40
+85
+125
C
t
r
, t
f
Input rise and fall times
V
CC
= 1.0V to 2.0V
V
CC
= 2.0V to 2.7V
V
CC
= 2.7V to 3.6V
V
CC
= 3.6V to 5.5V
500
200
100
50
ns/V
NOTE:
1. The LV is guaranteed to function down to V
CC
= 1.0V (input levels GND or V
CC
); DC characteristics are guaranteed from V
CC
= 1.2V to
V
CC
= 5.5V.
ABSOLUTE MAXIMUM RATINGS
1, 2
In accordance with the Absolute Maximum Rating System (IEC 134).
Voltages are referenced to GND (ground = 0V).
SYMBOL
PARAMETER
CONDITIONS
RATING
UNIT
V
CC
DC supply voltage
0.5 to +7.0
V
"
I
IK
DC input diode current
V
I
< 0.5 or V
I
> V
CC
+ 0.5V
20
mA
"
I
OK
DC output diode current
V
O
< 0.5 or V
O
> V
CC
+ 0.5V
50
mA
"
I
O
DC output source or sink current
bus driver outputs
0.5V < V
O
< V
CC
+ 0.5V
35
mA
"
I
GND
,
"
I
CC
DC V
CC
or GND current for types with
bus driver outputs
70
mA
T
stg
Storage temperature range
65 to +150
C
P
TOT
Power dissipation per package
plastic DIL
plastic mini-pack (SO)
plastic shrink mini-pack (SSOP and TSSOP)
for temperature range: 40 to +125
C
above +70
C derate linearly with 12 mW/K
above +70
C derate linearly with 8 mW/K
above +60
C derate linearly with 5.5 mW/K
750
500
400
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.
Philips Semiconductors
Product specification
74LV245
Octal bus transceiver (3-State)
1998 Apr 20
5
DC ELECTRICAL CHARACTERISTICS
Over recommended operating conditions. Voltages are referenced to GND (ground = 0V).
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
-40
C to +85
C
-40
C to +125
C
UNIT
MIN
TYP
1
MAX
MIN
MAX
V
CC
= 1.2V
0.9
0.9
V
IH
HIGH level Input
V
CC
= 2.0V
1.4
1.4
V
V
IH
voltage
V
CC
= 2.7 to 3.6V
2.0
2.0
V
V
CC
= 4.5 to 5.5V
0.7
<
V
CC
0.7
<
V
CC
V
CC
= 1.2V
0.3
0.3
V
IL
LOW level Input
V
CC
= 2.0V
0.6
0.6
V
V
IL
voltage
V
CC
= 2.7 to 3.6V
0.8
0.8
V
V
CC
= 4.5 to 5.5
0.3
<
V
CC
0.3
<
V
CC
V
CC
= 1.2V; V
I
= V
IH
or V
IL;
I
O
= 100
A
1.2
HIGH l
l
t
t
V
CC
= 2.0V; V
I
= V
IH
or V
IL;
I
O
= 100
A
1.8
2.0
1.8
V
OH
HIGH level output
voltage; all outputs
V
CC
= 2.7V; V
I
= V
IH
or V
IL;
I
O
= 100
A
2.5
2.7
2.5
V
voltage all out uts
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= 100
A
2.8
3.0
2.8
V
CC
= 4.5V;V
I
= V
IH
or V
IL;
I
O
= 100
A
4.3
4.5
4.3
V
O
HIGH level output
voltage; BUS driver
V
CC
= 3.0V;V
I
= V
IH
or V
IL;
I
O
= 8mA
2.40
2.82
2.20
V
V
OH
voltage; BUS driver
outputs
V
CC
= 4.5V;V
I
= V
IH
or V
IL;
I
O
= 16mA
3.60
4.20
3.50
V
V
CC
= 1.2V; V
I
= V
IH
or V
IL;
I
O
= 100
A
0
LOW l
l
t
t
V
CC
= 2.0V; V
I
= V
IH
or V
IL;
I
O
= 100
A
0
0.2
0.2
V
OL
LOW level output
voltage; all outputs
V
CC
= 2.7V; V
I
= V
IH
or V
IL;
I
O
= 100
A
0
0.2
0.2
V
voltage all out uts
V
CC
= 3.0V;V
I
= V
IH
or V
IL;
I
O
= 100
A
0
0.2
0.2
V
CC
= 4.5V;V
I
= V
IH
or V
IL;
I
O
= 100
A
0
0.2
0.2
V
O
LOW level output
voltage; BUS driver
V
CC
= 3.0V;V
I
= V
IH
or V
IL;
I
O
= 8mA
0.20
0.40
0.50
V
V
OL
voltage; BUS driver
outputs
V
CC
= 4.5V;V
I
= V
IH
or V
IL;
I
O
= 16mA
0.35
0.55
0.65
V
I
I
Input leakage
current
V
CC
= 5.5V; V
I
= V
CC
or GND
1.0
1.0
A
I
OZ
3-State output
OFF-state current
V
CC
= 5.5V; V
I
= V
IH
or V
IL;
V
O
= V
CC
or GND
5
10
A
I
CC
Quiescent supply
current; MSI
V
CC
= 5.5V; V
I
= V
CC
or GND; I
O
= 0
20.0
160
A
I
CC
Additional
quiescent supply
current
V
CC
= 2.7V to 3.6V; V
I
= V
CC
0.6V
500
850
A
NOTE:
1. All typical values are measured at T
amb
= 25
C.
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