74LVC4245APWDH-T [NXP]

IC LVC/LCX/Z SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO24, Bus Driver/Transceiver;
74LVC4245APWDH-T
型号: 74LVC4245APWDH-T
厂家: NXP    NXP
描述:

IC LVC/LCX/Z SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO24, Bus Driver/Transceiver

文件: 总16页 (文件大小:94K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
INTEGRATED CIRCUITS  
DATA SHEET  
74LVC4245A  
Octal dual supply translating  
transceiver; 3-state  
1999 Jun 15  
Product specification  
Supersedes data of 1998 Jul 29  
File under Integrated Circuits, IC24  
Philips Semiconductors  
Product specification  
Octal dual supply translating transceiver; 3-state  
74LVC4245A  
FEATURES  
DESCRIPTION  
In accordance with JEDEC  
standard no. 8-1A  
The 74LVC4245A is a high-performance, low-power, low-voltage, Si-gate  
CMOS device, superior to most advanced CMOS compatible TTL families.  
Wide supply voltage range:  
3 V port: 1.5 to 3.6 V  
The 74LVC4245A is an octal dual supply translating transceiver featuring  
non-inverting 3-state bus compatible outputs in both send and receive  
directions. It is designed to interface between a 3 and 5 V bus in a mixed 3/5 V  
supply environment.  
5 V port: 1.5 to 5.5 V  
CMOS low power consumption  
Direct interface with TTL levels  
The 74LVC4245A 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.  
Control inputs accept voltages up  
to 5.5 V.  
In suspend mode, when VCCA is zero, there will be no current flow from one  
supply to the other supply. The A-outputs must be set 3-state and the voltage  
on the A-bus must be smaller than Vdiode (typ. 0.7 V). VCCA VCCB (except in  
suspend mode).  
QUICK REFERENCE DATA  
GND = 0 V; Tamb = 25 °C; tr = tf 2.5 ns.  
SYMBOL  
tPHL/tPLH  
PARAMETER  
CONDITIONS  
CL = 50 pF  
TYPICAL  
UNIT  
propagation delay  
An to Bn  
VCCA = 5.0 V  
VCCB = 3.3 V  
4.0  
4.0  
ns  
ns  
pF  
Bn to An  
CI/O  
input/output capacitance  
A port  
10.0  
CPDA  
An to Bn  
VI = GND to VCC; note 1  
VI = GND to VCC; note 1  
7.8  
pF  
pF  
Bn to An  
27.9  
CPDB  
B port  
An to Bn  
VI = GND to VCC; note 1  
VI = GND to VCC; note 1  
26  
pF  
pF  
Bn to An  
10.4  
Note  
1. CPD is used to determine the dynamic power dissipation (PD in µW).  
PD = CPD × VCC2 × fi + Σ(CL × VCC2 × fo) where:  
fi = input frequency in MHz;  
fo = output frequency in MHz;  
CL = output load capacitance in pF;  
VCC = supply voltage in Volts;  
Σ(CL × VCC2 × fo) = sum of the outputs.  
1999 Jun 15  
2
Philips Semiconductors  
Product specification  
Octal dual supply translating transceiver; 3-state  
74LVC4245A  
FUNCTION TABLE  
See note 1.  
INPUT  
INPUT/OUTPUT  
OE  
DIR  
An  
Bn  
L
L
L
H
X
A = B  
inputs  
Z
inputs  
B = A  
Z
H
Note  
1. H = HIGH voltage level;  
L = LOW voltage level;  
X = don’t care;  
Z = high-impedance OFF-state.  
ORDERING INFORMATION  
OUTSIDE NORTH  
PACKAGE  
PINS PACKAGE MATERIAL  
NORTH AMERICA  
TEMPERATURE  
RANGE  
AMERICA  
CODE  
74LVC4245AD  
74LVC4245ADB  
74LVC4245APW  
74LVC4245AD  
74LVC4245ADB  
74LVC4245ADH  
40 to +85 °C  
24  
24  
24  
SO  
plastic  
plastic  
plastic  
SOT137-1  
SOT340-1  
SOT355-1  
SSOP  
TSSOP  
PINNING  
PIN  
SYMBOL  
DESCRIPTION  
1
2
VCCA  
DIR  
DC supply voltage (5 V bus)  
direction control  
3, 4, 5, 6, 7, 8, 9 and 10  
11, 12 and 13  
A0 to A7  
GND  
data inputs/outputs  
ground (0 V)  
14, 15, 16, 17, 18, 19, 20 and 21  
B7 to B0  
OE  
data inputs/outputs  
22  
output enable input (active LOW)  
DC supply voltage (3 V bus)  
23 and 24  
VCCB  
1999 Jun 15  
3
Philips Semiconductors  
Product specification  
Octal dual supply translating transceiver; 3-state  
74LVC4245A  
handbook, halfpage  
V
1
2
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
V
V
CCA  
DIR  
CCB  
CCB  
A
0
3
OE  
A
1
4
B
0
A
2
5
B
1
A
3
6
B
2
4245  
A
4
7
B
3
handbook, halfpage  
2
A
5
8
DIR  
B
4
A
6
9
B
5
OE  
22  
A
7
10  
11  
B
6
A
0
3
4
B
0
GND  
B
7
21  
A
1
GND 12  
GND  
B
1
MNA451  
20  
A
2
5
B
2
Fig.1 Pin configuration.  
19  
A
3
6
B
3
18  
A
4
7
B
4
17  
22  
A
5
handbook, halfpage  
G3  
8
B
5
3EN1  
2
16  
3EN2  
A
6
9
B
6
1
15  
A
7
21  
3
2
10  
B
7
14  
4
5
20  
19  
18  
17  
16  
15  
14  
MNA453  
6
7
8
9
10  
MNA452  
Fig.3 IEC logic symbol.  
Fig.2 Logic symbol.  
1999 Jun 15  
4
Philips Semiconductors  
Product specification  
Octal dual supply translating transceiver; 3-state  
74LVC4245A  
RECOMMENDED OPERATING CONDITIONS  
LIMITS  
UNIT  
SYMBOL  
VCCA  
PARAMETER  
CONDITIONS  
CCA VCCB (see Fig.5)  
CCA VCCB (see Fig.5)  
MIN.  
MAX.  
DC supply voltage 5 V port  
(for maximum speed performance)  
V
V
1.5  
5.5  
V
V
VCCB  
DC supply voltage 3 V port  
(for low-voltage applications)  
1.5  
3.6  
VI  
DC input voltage range (control inputs)  
DC input voltage range; output 3-state  
0
0
0
5.5  
5.5  
VCC  
V
V
V
VI/O  
DC output voltage range; output HIGH or  
LOW state  
Tamb  
tr,tf  
operating ambient temperature range  
see DC and AC characteristics 40  
per device  
+85  
°C  
input rise and fall times  
VCCB = 2.7 to 3.0 V  
0
0
0
0
20  
10  
20  
10  
ns/V  
V
CCB = 3.0 to 3.6 V  
CCA = 3.0 to 4.5 V  
V
VCCA = 4.5 to 5.5 V  
LIMITING VALUES  
In accordance with the Absolute Maximum Rating System (IEC 134). Voltages are referenced to GND (ground = 0 V).  
SYMBOL  
PARAMETER  
CONDITIONS  
MIN.  
MAX.  
+6.5  
UNIT  
VCCA  
VCCB  
IIK  
DC supply voltage 5 V port  
DC supply voltage 3 V port  
DC input diode current  
DC input voltage  
0.5  
0.5  
V
+4.6  
V
VI < 0  
note 1  
50  
mA  
V
VI  
0.5  
+6.5  
IOK  
DC output diode current  
VO > VCC or VO < 0  
±50  
mA  
V
VI/O  
DC output voltage; output HIGH or LOW note 1  
0.5  
0.5  
VCC + 0.5  
+6.5  
DC input voltage; output 3-state  
DC output diode current  
DC VCC or GND current  
storage temperature  
note 1  
V
IO  
VO = 0 to VCC  
±50  
mA  
mA  
°C  
I
GND, ICC  
±100  
+150  
Tstg  
Ptot  
65  
power dissipation per package  
plastic mini-pack (SO)  
above 70 °C derate linearly  
with 8 mW/K  
500  
500  
mW  
mW  
plastic shrink mini-pack (SSOP and  
TSSOP)  
above 60 °C derate linearly  
with 5.5 mW/K  
Note  
1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.  
1999 Jun 15  
5
Philips Semiconductors  
Product specification  
Octal dual supply translating transceiver; 3-state  
74LVC4245A  
DC CHARACTERISTICS  
Over recommended operating conditions; voltage are referenced to GND (ground = 0 V).  
TEST CONDITIONS  
Tamb (°C)  
SYMBOL  
PARAMETER  
40 to +85  
UNIT  
VCCA/B  
(V)  
OTHER  
MIN.  
TYP.(1) MAX.  
VIH  
VIL  
HIGH-level input voltage  
LOW-level input voltage  
3 V port  
5 V port  
3 V port  
5 V port  
2.7 to 3.6 2.0  
4.5 to 5.5 2.0  
V
V
V
2.7 to 3.6  
4.5 to 5.5  
V
V
V
V
V
V
0.8  
0.8  
VOH  
HIGH-level output voltage  
(3 V port)  
VI = VIH or VIL; IO = 12 mA 2.7  
VI = VIH or VIL; IO = 100 µA 3.0  
VI = VIH or VIL; IO = 24 mA 3.0  
VI = VIH or VIL; IO = 12 mA 4.5  
VI = VIH or VIL; IO = 100 µA 4.5  
VI = VIH or VIL; IO = 24 mA 4.5  
CC 0.5  
CC 0.2 VCC  
CC 1.0  
CC 0.5  
HIGH-level output voltage  
(5 V port)  
V
V
V
CC 0.2 VCC  
CC 0.8  
VOL  
LOW-level output voltage  
(3 V port)  
VI = VIH or VIL; IO = 12 mA  
VI = VIH or VIL; IO = 100 µA  
VI = VIH or VIL; IO = 24 mA  
VI = VIH or VIL; IO = 12 mA  
VI = VIH or VIL; IO = 100 µA  
VI = VIH or VIL; IO = 24 mA  
VI = 5.5 V or GND; note 2  
VI = VCC or GND  
2.7  
3.0  
3.0  
4.5  
4.5  
4.5  
3.6  
3.6  
0.40  
0.20  
0.55  
0.40  
0.20  
0.55  
±5  
±15  
LOW-level output voltage  
(5 V port)  
II  
IHZ/IILZ  
input leakage current  
±0.1  
0.1  
µA  
µA  
I
input current for common  
I/O pins (3 V port)  
input current for common  
I/O pins (5 V port)  
VI = VCC or GND  
5.5  
0.1  
0.1  
0.1  
0.1  
0.1  
5
±15  
±5  
µA  
µA  
µA  
µA  
µA  
µA  
IOZ  
3-state output OFF-state  
current (3 V port)  
VI = VIH or VIL;  
VO = VCC or GND  
3.6  
3-state output OFF-state  
current (5 V port)  
VI = VIH or VIL;  
VO = VCC or GND  
5.5  
±5  
ICC  
quiescent supply current  
(3 V port)  
VI = VCC or GND; IO = 0  
3.6  
10  
quiescent supply current  
(5 V port)  
VI = VCC or GND; IO = 0  
5.5  
10  
ICC  
additional quiescent supply VI = VCC 0.6 V; IO = 0  
2.7 to 3.6  
500  
current per control pin (3 V  
port)  
additional quiescent supply VI = VCC 2.1 V; IO = 0  
4.5 to 5.5  
5
500  
µA  
current per control pin (5 V  
port)  
Notes  
1. All typical values are at VCCA = 5.0 V, VCCB = 3.3 V and Tamb = 25 °C.  
2. Not for I/O pins.  
1999 Jun 15  
6
Philips Semiconductors  
Product specification  
Octal dual supply translating transceiver; 3-state  
74LVC4245A  
AC CHARACTERISTICS  
GND = 0 V; tr = tf 2.5 ns; CL = 50 pF; Tamb = 40 to 85 °C.  
LIMITS  
VCCA = 5 V ± 0.5 V  
SYMBOL  
PARAMETER  
WAVEFORMS  
UNIT  
V
CCB = 3.3 V ± 0.3 V  
VCCB = 2.7 V  
MIN. TYP.(1) MAX. MIN. TYP.(2) MAX.  
t
PHL/tPLH propagation delay  
see Figs 4 and 7  
see Figs 4 and 7  
see Figs 6 and 7  
see Figs 6 and 7  
see Figs 6 and 7  
see Figs 6 and 7  
1.5  
1.5  
1.5  
1.5  
1.5  
1.5  
4.0  
4.0  
6.2  
5.0  
5.3  
5.8  
6.5  
6.5  
10  
1.5  
1.5  
1.5  
1.5  
1.5  
1.5  
4.5  
4.5  
7.0  
5.7  
5.7  
6.2  
7.0  
7.0  
11.0  
8.7  
8.0  
8.5  
ns  
ns  
ns  
ns  
ns  
ns  
An to Bn  
propagation delay  
Bn to An  
tPZH/tPZL 3-state output enable  
time OE to An  
3-state output enable  
time OE to Bn  
8.1  
7.5  
7.8  
tPHZ/tPLZ 3-state output disable  
time OE to An  
3-state output disable  
time OE to Bn  
Notes  
1. Typical values are measured at VCCA = 5.0 V and VCCB = 3.3 V and Tamb = 25 °C.  
2. Typical values are measured at VCCA = 5.0 V and Tamb = 25 °C.  
AC WAVEFORMS  
MNA454  
3.9  
handbook, halfpag
V
V
V  
CCA CCB  
CCB  
(V)  
3.6  
3.3  
3.0  
2.7  
2.4  
2.1  
1.8  
1.5  
1.2  
0.9  
V
handbook, halfpage  
A , B  
I
n
n
V
M
INPUT  
GND  
t
t
PHL  
PLH  
V
OH  
B , A  
n
n
V
M
OUTPUT  
MNA366  
V
OL  
VM = 1.5 V at 2.7 V VCCB 3.6 V;  
VM = 0.5VCCA at VCCA 4.5 V;  
1.5  
2.1  
2.7  
3.3  
3.9  
4.5  
5.1  
5.7  
V
(V)  
CCA  
VOL and VOH are typical output voltage drop that occur  
with the output load.  
Full operation  
Complies with TTL levels  
Fig.4 The input (An, Bn) to output (Bn, An)  
propagation delays.  
Fig.5 Supply operation area.  
1999 Jun 15  
7
Philips Semiconductors  
Product specification  
Octal dual supply translating transceiver; 3-state  
74LVC4245A  
V
I
OE INPUT  
V
M
GND  
t
t
PZL  
PLZ  
V
CC  
OUTPUT  
LOW-to-OFF  
OFF-to-LOW  
V
M
V
X
V
OL  
t
t
PHZ  
PZH  
V
OH  
V
Y
OUTPUT  
HIGH-to-OFF  
OFF-to-HIGH  
V
M
GND  
outputs  
enabled  
outputs  
enabled  
outputs  
disabled  
MNA367  
VM = 1.5 V at 2.7 V VCCB 3.6 V;  
VY = VOH 0.3 V at VCCB 3.6 V;  
Y = VOH 0.1 (VOH GND) at VCCA 4.5 V;  
V
M = 0.5VCCA at VCCA 4.5 V;  
V
VX = VOL + 0.3 V at VCCB 3.6 V;  
VOL and VOH are typical output voltage drop that occur with the output load.  
VX = VOL + 0.1 (VCCA VOL) at VCCA 4.5 V  
Fig.6 The 3-state enable and disable times.  
S1  
2 × V  
open  
GND  
CC  
V
CC  
R
L
500 Ω  
V
V
O
I
PULSE  
GENERATOR  
D.U.T.  
C
50 pF  
R
L
L
R
T
500 Ω  
MNA368  
VCC  
VI  
for A and B port VCC  
<2.7 V  
TEST  
S1  
open  
Definitions for test circuit:  
for B port  
2.7 V  
RL = Load resistor; see chapter “AC characteristics”.  
tPLH/tPHL  
tPLZ/tPZL  
tPHZ/tPZH  
2.7 to 3.6 V  
CL = Load capacitance including jig and probe capacitance  
(see chapter “AC characteristics”).  
2 × VCC  
for A port  
3.0 V  
RT = Termination resistance should be equal to the output  
impedance Z0 of the pulse generator.  
GND  
4.5 to 5.5 V  
Fig.7 Load circuitry for switching times.  
8
1999 Jun 15  
Philips Semiconductors  
Product specification  
Octal dual supply translating transceiver; 3-state  
74LVC4245A  
PACKAGE OUTLINES  
SO24: plastic small outline package; 24 leads; body width 7.5 mm  
SOT137-1  
D
E
A
X
c
H
v
M
A
E
y
Z
24  
13  
Q
A
2
A
(A )  
3
A
1
pin 1 index  
θ
L
p
L
1
12  
w
detail X  
e
M
b
p
0
5
10 mm  
scale  
DIMENSIONS (inch dimensions are derived from the original mm dimensions)  
A
max.  
(1)  
(1)  
(1)  
UNIT  
A
A
A
b
c
D
E
e
H
L
L
Q
v
w
y
θ
1
2
3
p
E
p
Z
0.30  
0.10  
2.45  
2.25  
0.49  
0.36  
0.32  
0.23  
15.6  
15.2  
7.6  
7.4  
10.65  
10.00  
1.1  
0.4  
1.1  
1.0  
0.9  
0.4  
mm  
2.65  
0.25  
0.01  
1.27  
0.050  
1.4  
0.25 0.25  
0.01  
0.1  
8o  
0o  
0.012 0.096  
0.004 0.089  
0.019 0.013 0.61  
0.014 0.009 0.60  
0.30  
0.29  
0.419  
0.394  
0.043 0.043  
0.016 0.039  
0.035  
0.016  
inches 0.10  
0.055  
0.01 0.004  
Note  
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.  
REFERENCES  
OUTLINE  
EUROPEAN  
PROJECTION  
ISSUE DATE  
VERSION  
IEC  
JEDEC  
EIAJ  
95-01-24  
97-05-22  
SOT137-1  
075E05  
MS-013AD  
1999 Jun 15  
9
Philips Semiconductors  
Product specification  
Octal dual supply translating transceiver; 3-state  
74LVC4245A  
SSOP24: plastic shrink small outline package; 24 leads; body width 5.3 mm  
SOT340-1  
D
E
A
X
c
H
v
M
A
y
E
Z
24  
13  
Q
A
2
A
(A )  
3
A
1
pin 1 index  
θ
L
p
L
1
12  
detail X  
w
M
b
p
e
0
2.5  
5 mm  
scale  
DIMENSIONS (mm are the original dimensions)  
A
(1)  
(1)  
(1)  
UNIT  
A
A
A
b
c
D
E
e
H
L
L
p
Q
v
w
y
Z
θ
1
2
3
p
E
max.  
8o  
0o  
0.21  
0.05  
1.80  
1.65  
0.38  
0.25  
0.20  
0.09  
8.4  
8.0  
5.4  
5.2  
7.9  
7.6  
1.03  
0.63  
0.9  
0.7  
0.8  
0.4  
mm  
2.0  
0.65  
1.25  
0.25  
0.2  
0.13  
0.1  
Note  
1. Plastic or metal protrusions of 0.20 mm maximum per side are not included.  
REFERENCES  
OUTLINE  
EUROPEAN  
PROJECTION  
ISSUE DATE  
VERSION  
IEC  
JEDEC  
EIAJ  
93-09-08  
95-02-04  
SOT340-1  
MO-150AG  
1999 Jun 15  
10  
Philips Semiconductors  
Product specification  
Octal dual supply translating transceiver; 3-state  
74LVC4245A  
TSSOP24: plastic thin shrink small outline package; 24 leads; body width 4.4 mm  
SOT355-1  
D
E
A
X
c
H
v
M
A
y
E
Z
13  
24  
Q
A
2
(A )  
3
A
A
1
pin 1 index  
θ
L
p
L
1
12  
detail X  
w
M
b
p
e
0
2.5  
5 mm  
scale  
DIMENSIONS (mm are the original dimensions)  
A
(1)  
(2)  
(1)  
UNIT  
A
A
A
b
c
D
E
e
H
L
L
p
Q
v
w
y
Z
θ
1
2
3
p
E
max.  
8o  
0o  
0.15  
0.05  
0.95  
0.80  
0.30  
0.19  
0.2  
0.1  
7.9  
7.7  
4.5  
4.3  
6.6  
6.2  
0.75  
0.50  
0.4  
0.3  
0.5  
0.2  
mm  
1.10  
0.65  
0.25  
1.0  
0.2  
0.13  
0.1  
Notes  
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.  
2. Plastic interlead protrusions of 0.25 mm maximum per side are not included.  
REFERENCES  
OUTLINE  
EUROPEAN  
PROJECTION  
ISSUE DATE  
VERSION  
IEC  
JEDEC  
EIAJ  
93-06-16  
95-02-04  
SOT355-1  
MO-153AD  
1999 Jun 15  
11  
Philips Semiconductors  
Product specification  
Octal dual supply translating transceiver; 3-state  
74LVC4245A  
Use a double-wave soldering method comprising a  
turbulent wave with high upward pressure followed by a  
smooth laminar wave.  
SOLDERING  
Introduction to soldering surface mount packages  
This text gives a very brief insight to a complex technology.  
A more in-depth account of soldering ICs can be found in  
our “Data Handbook IC26; Integrated Circuit Packages”  
(document order number 9398 652 90011).  
For packages with leads on two sides and a pitch (e):  
– larger than or equal to 1.27 mm, the footprint  
longitudinal axis is preferred to be parallel to the  
transport direction of the printed-circuit board;  
There is no soldering method that is ideal for all surface  
mount IC packages. Wave soldering is not always suitable  
for surface mount ICs, or for printed-circuit boards with  
high population densities. In these situations reflow  
soldering is often used.  
– smaller than 1.27 mm, the footprint longitudinal axis  
must be parallel to the transport direction of the  
printed-circuit board.  
The footprint must incorporate solder thieves at the  
downstream end.  
For packages with leads on four sides, the footprint must  
be placed at a 45° angle to the transport direction of the  
printed-circuit board. The footprint must incorporate  
solder thieves downstream and at the side corners.  
Reflow soldering  
Reflow soldering requires solder paste (a suspension of  
fine solder particles, flux and binding agent) to be applied  
to the printed-circuit board by screen printing, stencilling or  
pressure-syringe dispensing before package placement.  
During placement and before soldering, the package must  
be fixed with a droplet of adhesive. The adhesive can be  
applied by screen printing, pin transfer or syringe  
dispensing. The package can be soldered after the  
adhesive is cured.  
Several methods exist for reflowing; for example,  
infrared/convection heating in a conveyor type oven.  
Throughput times (preheating, soldering and cooling) vary  
between 100 and 200 seconds depending on heating  
method.  
Typical dwell time is 4 seconds at 250 °C.  
A mildly-activated flux will eliminate the need for removal  
of corrosive residues in most applications.  
Typical reflow peak temperatures range from  
215 to 250 °C. The top-surface temperature of the  
packages should preferable be kept below 230 °C.  
Manual soldering  
Fix the component by first soldering two  
diagonally-opposite end leads. Use a low voltage (24 V or  
less) soldering iron applied to the flat part of the lead.  
Contact time must be limited to 10 seconds at up to  
300 °C.  
Wave soldering  
Conventional single wave soldering is not recommended  
for surface mount devices (SMDs) or printed-circuit boards  
with a high component density, as solder bridging and  
non-wetting can present major problems.  
When using a dedicated tool, all other leads can be  
soldered in one operation within 2 to 5 seconds between  
270 and 320 °C.  
To overcome these problems the double-wave soldering  
method was specifically developed.  
If wave soldering is used the following conditions must be  
observed for optimal results:  
1999 Jun 15  
12  
Philips Semiconductors  
Product specification  
Octal dual supply translating transceiver; 3-state  
74LVC4245A  
Suitability of surface mount IC packages for wave and reflow soldering methods  
SOLDERING METHOD  
PACKAGE  
WAVE  
REFLOW(1)  
BGA, SQFP  
not suitable  
not suitable(2)  
suitable  
suitable  
suitable  
suitable  
suitable  
HLQFP, HSQFP, HSOP, SMS  
PLCC(3), SO, SOJ  
LQFP, QFP, TQFP  
SSOP, TSSOP, VSO  
suitable  
not recommended(3)(4)  
not recommended(5)  
Notes  
1. All surface mount (SMD) packages are moisture sensitive. Depending upon the moisture content, the maximum  
temperature (with respect to time) and body size of the package, there is a risk that internal or external package  
cracks may occur due to vaporization of the moisture in them (the so called popcorn effect). For details, refer to the  
Drypack information in the “Data Handbook IC26; Integrated Circuit Packages; Section: Packing Methods”.  
2. These packages are not suitable for wave soldering as a solder joint between the printed-circuit board and heatsink  
(at bottom version) can not be achieved, and as solder may stick to the heatsink (on top version).  
3. If wave soldering is considered, then the package must be placed at a 45° angle to the solder wave direction.  
The package footprint must incorporate solder thieves downstream and at the side corners.  
4. Wave soldering is only suitable for LQFP, TQFP and QFP packages with a pitch (e) equal to or larger than 0.8 mm;  
it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.65 mm.  
5. Wave soldering is only suitable for SSOP and TSSOP packages with a pitch (e) equal to or larger than 0.65 mm; it is  
definitely not suitable for packages with a pitch (e) equal to or smaller than 0.5 mm.  
DEFINITIONS  
Data sheet status  
Objective specification  
Preliminary specification  
Product specification  
This data sheet contains target or goal specifications for product development.  
This data sheet contains preliminary data; supplementary data may be published later.  
This data sheet contains final product specifications.  
Limiting values  
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or  
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation  
of the device at these or at any other conditions above those given in the Characteristics sections of the specification  
is not implied. Exposure to limiting values for extended periods may affect device reliability.  
Application information  
Where application information is given, it is advisory and does not form part of the specification.  
LIFE SUPPORT APPLICATIONS  
These products are not designed for use in life support appliances, devices, or systems where malfunction of these  
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for  
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such  
improper use or sale.  
1999 Jun 15  
13  
Philips Semiconductors  
Product specification  
Octal dual supply translating transceiver; 3-state  
74LVC4245A  
NOTES  
1999 Jun 15  
14  
Philips Semiconductors  
Product specification  
Octal dual supply translating transceiver; 3-state  
74LVC4245A  
NOTES  
1999 Jun 15  
15  
Philips Semiconductors – a worldwide company  
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Philippines: Philips Semiconductors Philippines Inc.,  
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Romania: see Italy  
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Slovakia: see Austria  
Slovenia: see Italy  
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Tel. +91 22 493 8541, Fax. +91 22 493 0966  
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Tel. +41 1 488 2741 Fax. +41 1 488 3263  
Indonesia: PT Philips Development Corporation, Semiconductors Division,  
Gedung Philips, Jl. Buncit Raya Kav.99-100, JAKARTA 12510,  
Tel. +62 21 794 0040 ext. 2501, Fax. +62 21 794 0080  
Taiwan: Philips Semiconductors, 6F, No. 96, Chien Kuo N. Rd., Sec. 1,  
TAIPEI, Taiwan Tel. +886 2 2134 2886, Fax. +886 2 2134 2874  
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TEL AVIV 61180, Tel. +972 3 645 0444, Fax. +972 3 649 1007  
Turkey: Yukari Dudullu, Org. San. Blg., 2.Cad. Nr. 28 81260 Umraniye,  
ISTANBUL, Tel. +90 216 522 1500, Fax. +90 216 522 1813  
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MIDDLESEX UB3 5BX, Tel. +44 208 730 5000, Fax. +44 208 754 8421  
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Tel. +1 800 234 7381, Fax. +1 800 943 0087  
Malaysia: No. 76 Jalan Universiti, 46200 PETALING JAYA, SELANGOR,  
Tel. +60 3 750 5214, Fax. +60 3 757 4880  
Uruguay: see South America  
Vietnam: see Singapore  
Mexico: 5900 Gateway East, Suite 200, EL PASO, TEXAS 79905,  
Tel. +9-5 800 234 7381, Fax +9-5 800 943 0087  
Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD,  
Middle East: see Italy  
Tel. +381 11 62 5344, Fax.+381 11 63 5777  
For all other countries apply to: Philips Semiconductors,  
Internet: http://www.semiconductors.philips.com  
International Marketing & Sales Communications, Building BE-p, P.O. Box 218,  
5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825  
© Philips Electronics N.V. 1999  
SCA66  
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.  
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed  
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license  
under patent- or other industrial or intellectual property rights.  
Printed in The Netherlands  
245004/03/pp16  
Date of release: 1999 Jun 15  
Document order number: 9397 750 06037  

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