• Low inductance multiple power and ground pins for
minimum noise and ground bounce
• Direct interface with TTL levels
• Bus hold on data inputs (74LVCH32245A only)
• Typical output ground bounce voltage:
V
<0.8VatVCC= 3.3 V; T
OLP
• Typical output VOH undershoot voltage:
V
>2VatVCC= 3.3 V; T
OHV
• Power-off disabled outputs, permitting live insertion
• Plastic fine-pitch ball grid array package.
amb
amb
=25°C
=25°C
74LVC32245A;
74LVCH32245A
DESCRIPTION
The 74LVC(H)32245A is a high-performance, low-power,
low-voltage, Si-gate CMOS device, superior to most
advanced CMOS compatible TTL families. Inputs can be
driven from either 3.3 or 5 V devices. In 3-state operation,
outputs can handle 5 V. These features allow the use of
these devices in a mixed 3.3 and 5 V environment.
The 74LVC(H)32245A is a 32-bit transceiver featuring
non-inverting 3-state bus compatible outputs in both send
andreceivedirections.The74LVC(H)32245Afeaturestwo
output enable (nOE) inputs for easy cascading and two
send or receive (nDIR) inputs for direction control. nOE
controls the outputs so that the buses are effectively
isolated.
To ensure the high-impedance state during power-up or
power-down, input nOE should be tied to VCC through a
pull-up resistor; the minimum value of the resistor is
determined by the current-sinking capability of the driver.
The 74LVCH32245A bus hold data inputs eliminates the
need for external pull-up resistors to hold unused or
floating data inputs at a valid logic level (see Fig.2).
QUICK REFERENCE DATA
Ground = 0 V; T
=25°C; tr=tf≤2.5 ns.
amb
SYMBOLPARAMETERCONDITIONSTYPICALUNIT
t
PHL/tPLH
C
I
C
I/O
C
PD
propagation delay
nAnto nBn;nBnto nA
n
CL= 50 pF; VCC= 3.3 V3.0ns
input capacitance5.0pF
input/output capacitance10pF
power dissipation capacitance per
VI= GND to VCC; note 130pF
buffer
Note
1. C
is used to determine the dynamic power dissipation (PDin µW).
PD
PD=CPD× V
= input frequency in MHz;
f
i
2
× fi+ Σ(CL× V
CC
2
× fo) where:
CC
fo= output frequency in MHz;
CL= output load capacitance in pF;
VCC= supply voltage in Volts;
Σ(CL× V
2
× fo) = sum of the outputs.
CC
1999 Sep 012
Page 3
Philips SemiconductorsProduct specification
32-bit bus transceiver with direction pin;
5 V tolerant; 3-state
FUNCTION TABLE
See note 1.
INPUTOUTPUT
n
OEnDIRnA
LLA = Binputs
LHinputsB = A
HXZZ
Note
1. H = HIGH voltage level;
L = LOW voltage level;
X = don’t care;
Z = high-impedance OFF-state.
ORDERING INFORMATION
TYPE NUMBER
TEMPERATURE RANGEPINSPACKAGEMATERIALCODE
74LVC32245AEC−40 to +85 °C96LFBGA96plasticSOT536-1
74LVCH32245AEC96LFBGA96plasticSOT536-1
n
PACKAGES
74LVC32245A;
74LVCH32245A
nB
n
PINNING
SYMBOLDESCRIPTION
nDIRdirection control
n
OEoutput enable input (active LOW)
nA
n
nB
n
GNDground (0 V)
V
CC
data inputs/outputs
data inputs/outputs
DC supply voltage
1999 Sep 013
Page 4
Philips SemiconductorsProduct specification
32-bit bus transceiver with direction pin;
5 V tolerant; 3-state
handbook, full pagewidth
6
1A11A31A51A72A12A32A52A63A13A33A53A74A14A34A54A
5
1A01A21A41A62A02A22A42A73A03A23A43A64A04A24A44A
1OE2OE 3OEGNDGND GNDGND4OEV
4
1DIR
32DIR 3DIRGNDGND GNDGND4DIRV
1B01B21B41B62B02B22B42B73B03B23B43B64B04B24B44B
2
1B11B31B51B72B12B32B512B63B13B33B53B74B14B34B54B
1
AHJBDEGTCFKMNRLP
CC
CC
V
CC
V
CC
GNDGND GNDGNDV
GNDGND GNDGNDV
CC
CC
74LVC32245A;
74LVCH32245A
MNA475
6
7
V
CC
V
CC
7
6
handbook, halfpage
data
input
Fig.1 Pin configuration.
V
CC
to internal circuit
MNA473
Fig.2 Bus hold circuit.
1999 Sep 014
Page 5
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1999 Sep 015
ok, full pagewidth
Philips SemiconductorsProduct specification
32-bit bus transceiver with direction pin;
5 V tolerant; 3-state
1DIR
A3
1OE
1A
0
A5
1A
1
A6
1A
2
B5
1A
3
B6
1A
4
C5
1A
5
C6
1A
6
D5
1A
7
D6
A4
1B
0
A2
1B
1
A1
1B
2
B2
1B
3
B1
1B
4
C2
1B
5
C1
1B
6
D2
1B
7
D1
2DIR
H3
2OE
2A
0
E5
2A
1
E6
2A
2
F5
2A
3
F6
2A
4
G5
2A
5
G6
2A
6
H6
2A
7
H5
H4
2B
0
E2
2B
1
E1
2B
2
F2
2B
3
F1
2B
4
G2
2B
5
G1
2B
6
H1
2B
7
H2
M5
M6
3DIR
J3
3OE
3A
0
J5
3A
1
J6
3A
2
K5
3A
3
K6
3A
4
L5
3A
5
L6
3A
6
3A
7
J4
3B
0
J2
3B
1
J1
3B
2
K2
3B
3
K1
3B
4
L2
3B
5
L1
3B
6
M2
3B
7
M1
4DIR
T3
4OE
4B
0
4B
1
4B
2
4B
3
4B
4
4B
5
4B
6
4B
7
MNA476
T4
N2
N1
P2
P1
R2
R1
T1
T2
74LVCH32245A
74LVC32245A;
4A
0
N5
4A
1
N6
4A
2
P5
4A
3
P6
4A
4
R5
4A
5
R6
4A
6
T6
4A
7
T5
Fig.3 Logic symbol.
Page 6
Philips SemiconductorsProduct specification
32-bit bus transceiver with direction pin;
5 V tolerant; 3-state
74LVC32245A;
74LVCH32245A
RECOMMENDED OPERATING CONDITIONS
LIMITS
SYMBOLPARAMETERCONDITIONS
UNIT
MIN.MAX.
V
CC
DC supply voltagefor max. speed performance2.73.6V
for low-voltage applications1.23.6V
V
I
V
O
DC input voltage05.5V
DC output voltageoutput HIGH or LOW state0V
CC
V
3-state05.5V
T
amb
operating ambient temperaturesee DC and AC characteristics
−40+85°C
per device
t
(∆t/∆f)input rise and fall times ratioVCC= 1.2 to 2.7 V020ns/V
r,tf
V
= 2.7 to 3.6 V010
CC
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134); voltages are referenced to GND (ground= 0 V).
SYMBOLPARAMETERCONDITIONSMIN.MAX.UNIT
V
CC
V
I
I
IK
I
OK
V
O
DC supply voltage−0.5+6.5V
DC input voltagenote 1−0.5+6.5V
DC input diode currentVI<0−−50mA
DC output diode currentVO>VCCor VO< 0; note 1−±50mA
DC output voltageoutput HIGH or LOW state; note 1 −0.5VCC+ 0.5V
output 3-state; note 1−0.5+6.5V
I
O
I
, I
CC
GND
T
stg
P
D
DC output source or sink currentVO=0toV
CC
−±50mA
DC VCC or GND current−±100mA
storage temperature−65+150°C
power dissipation per packagetemperature range:
−1000mW
−40 to +85 °C; note 2
Notes
1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. Above 70 °C the value of P
derates linearly with 1.8 mW/K.
D
1999 Sep 016
Page 7
Philips SemiconductorsProduct specification
32-bit bus transceiver with direction pin;
5 V tolerant; 3-state
DC CHARACTERISTICS
Over recommended operating conditions; voltage are referenced to GND (ground=0V).
TEST CONDITIONST
SYMBOLPARAMETER
V
IH
V
IL
V
OH
V
OL
I
I
I
OZ
I
off
I
CC
∆I
CC
HIGH-level input voltage1.2V
LOW-level input voltage1.2−−GND V
HIGH-level output voltageVI=VIHor V
LOW-level output voltageVI=VIHor V
input leakage currentVI= 5.5 Vor GND;
3-state output OFF-state currentVI=VIHor VIL;
power off leakage supply current VIor VO= 5.5 V0.0−0.1±10µA
quiescent supply currentVI=VCCor GND; IO= 03.6−0.140µA
additional quiescent supply
current per input pin
I
BHL
I
BHH
I
BHLO
I
BHHO
bus hold LOW sustaining current VI= 0.8 V;
bus hold HIGH sustaining current VI= 2.0 V;
bus hold LOW overdrive currentnotes 3, 4 and 63.6500−−µA
bus hold HIGH overdrive current notes 3, 4 and 63.6−500−−µA
note 2
VO= 5.5 Vor GND
VI=VCC− 0.6 V; IO= 02.7 to 3.6 −5500µA
notes 3, 4 and 5
notes 3, 4 and 5
OTHERVCC(V)
CC
2.7 to 3.6 2.0−−
2.7 to 3.6 −−0.8
IL
IO= −12 mA2.7VCC− 0.5 −−V
I
=−100 µA3.0VCC− 0.2 V
O
I
= −18 mA3.0VCC− 0.6 −−
O
I
=−24 mA3.0VCC− 0.8 −−
O
IL
IO= 12 mA2.7−−0.40V
I
= 100 µA3.0−−0.20
O
I
= 24 mA3.0−−0.55
O
3.6−±0.1±5µA
3.6−0.1±5µA
3.075−−µA
3.0−75−−µA
74LVC32245A;
74LVCH32245A
(°C)
amb
−40 to +85
MIN.TYP.
(1)
−−V
CC
UNIT
MAX.
−
Notes
1. All typical values are at V
= 3.3 V and T
CC
amb
=25°C.
2. For bus hold parts the bus hold circuit is switched off when VIexceeds VCC allowing 5.5 V on the input terminal.
3. Valid for data inputs of bus hold parts only (LVCH32xxx-A).
4. For data inputs only. Control inputs do not have a bus hold circuit.
5. The specified sustaining current at the data input holds the input below the specified VIlevel.
6. The specified overdrive current at the data input forces the data input to the opposite logic input level.
1999 Sep 017
Page 8
Philips SemiconductorsProduct specification
32-bit bus transceiver with direction pin;
5 V tolerant; 3-state
AC CHARACTERISTICS
Ground = 0 V; tr=tf≤2.5 ns; CL= 50 pF; RL= 500 Ω.
SYMBOLPARAMETER
t
PHL/tPLH
propagation delay
nAnto nBn; nBnto nA
t
PZH/tPZL
3-state output enable time
nOE to nAn; nOE to nB
t
PHZ/tPLZ
3-state output disable time
nOE to nAn; nOE to nB
Note
1. All typical values are measured at V
AC WAVEFORMS
n
n
n
= 3.3 V and T
CC
TEST CONDITIONST
WAVEFORMSVCC(V)MIN.TYP.
see Figs 4 and 62.71.5−5.5ns
see Figs 5 and 62.71.5−7.1ns
see Figs 5 and 62.71.5−6.6ns
amb
=25°C.
74LVC32245A;
74LVCH32245A
= −40 to +85 °C
amb
(1)
3.0 to 3.61.53.04.5
3.0 to 3.61.54.06.1
3.0 to 3.61.54.05.6
MAX.
UNIT
n
GND
V
n
V
I
V
M
t
PHL
OH
V
OL
handbook, halfpage
nAn, nB
INPUT
nBn, nA
OUTPUT
VM= 1.5 V at VCC≥ 2.7 V or
VM= 0.5 × VCCat VCC< 2.7 V.
VOL and VOH are typical output voltage drop that occur with the output load.
Fig.4 Input nAn, nBnto output nBn, nAn propagation delay times.
t
PLH
V
M
MNA477
1999 Sep 018
Page 9
Philips SemiconductorsProduct specification
32-bit bus transceiver with direction pin;
5 V tolerant; 3-state
GND
V
CC
V
OL
V
OH
GND
V
I
V
M
t
PLZ
t
PHZ
outputs
enabled
handbook, full pagewidth
nOE INPUT
OUTPUT
LOW-to-OFF
OFF-to-LOW
OUTPUT
HIGH-to-OFF
OFF-to-HIGH
VM= 1.5 V at VCC≥ 2.7 V or
VM= 0.5 × VCCat VCC< 2.7 V;
VX=VOL+ 0.3 V at VCC≥ 2.7 V or
VX=VOL+ 0.1 V at VCC< 2.7 V;
VY=VOH− 0.3VatVCC≥ 2.7 V or
VY=VOH− 0.1VatVCC< 2.7 V;
VOLand VOHare typical output voltage drop that occur with the output load.
74LVC32245A;
74LVCH32245A
t
PZL
V
M
V
X
t
PZH
V
Y
V
M
outputs
disabled
outputs
enabled
MNA478
handbook, full pagewidth
TESTS
t
PLH/tPHL
t
PLZ/tPZL
t
PHZ/tPZH
open
2 × V
GND
1
CC
Fig.5 3-state enable and disable times.
PULSE
GENERATOR
V
CC
< 2.7 VV
2.7 to 3.6 V 2.7 V
S
2 × V
1
V
CC
V
I
CC
R
V
D.U.T.
T
I
V
O
C
50 pF
Definitions for test circuit:
RL= load resistor.
CL= load capacitance including jig and probe capacitance.
RT= termination resistanceshould beequal to theoutput impedance
of the pulse generator.
Z
o
R
L
500 Ω
R
L
L
500 Ω
open
GND
MNA479
CC
Fig.6 Load circuitry for switching times.
1999 Sep 019
Page 10
Philips SemiconductorsProduct specification
32-bit bus transceiver with direction pin;
5 V tolerant; 3-state
74LVC32245A;
74LVCH32245A
PACKAGE OUTLINE
LFBGA96: plastic low profile fine-pitch ball grid array package; 96 balls; body 13.5 x 5.5 x 1.05 mm
D
ball A1
index area
A
2
E
detail X
A
A
1
SOT536-1
b
e
T
R
P
N
M
L
K
J
H
G
F
E
D
C
B
A
246135
DIMENSIONS (mm are the original dimensions)
A
UNIT
mm
max.
1.5
A
0.41
0.31
1
1.2
0.9
bA
0.51
0.41
5.6
5.4
D
13.6
13.4
2
∅ w
M
Z
D
Z
E
e
ye
0.1
Z
0.93
0.58
E
0.8
w
0.2v0.15
vA
Z
D
E
0.93
0.58
A
y
X
0510 mm
scale
OUTLINE
VERSION
SOT536-1
IEC JEDEC EIAJ
REFERENCES
1999 Sep 0110
EUROPEAN
PROJECTION
ISSUE DATE
98-11-25
99-06-03
Page 11
Philips SemiconductorsProduct specification
32-bit bus transceiver with direction pin;
5 V tolerant; 3-state
SOLDERING
Introduction to soldering surface mount packages
Thistextgives a very brief insight toacomplextechnology.
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).
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.
Reflow soldering
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
tothe printed-circuit board byscreenprinting, stencilling or
pressure-syringe dispensing before package placement.
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 reflow peak temperatures range from
215 to 250 °C. The top-surface temperature of the
packages should preferable be kept below 230 °C.
Wave soldering
Conventional single wave soldering is not recommended
forsurfacemount devices (SMDs) or printed-circuit boards
with a high component density, as solder bridging and
non-wetting can present major problems.
To overcome these problems the double-wave soldering
method was specifically developed.
74LVC32245A;
74LVCH32245A
If wave soldering is used the following conditions must be
observed for optimal results:
• Use a double-wave soldering method comprising a
turbulent wave with high upward pressure followed by a
smooth laminar wave.
• 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;
– 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.
• Forpackageswith 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.
During placement andbefore 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.
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.
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.
When using a dedicated tool, all other leads can be
soldered in one operation within 2 to 5 seconds between
270 and 320 °C.
1999 Sep 0111
Page 12
Philips SemiconductorsProduct specification
32-bit bus transceiver with direction pin;
5 V tolerant; 3-state
Suitability of surface mount IC packages for wave and reflow soldering methods
1. All surface mount (SMD) packages are moisture sensitive. Depending upon the moisture content, the maximum
2. These packages are not suitable for wave soldering as a solder joint between the printed-circuit board and heatsink
3. If wave soldering is considered, then the package must be placed at a 45° angle to the solder wave direction.
4. Wave soldering is only suitable for LQFP, TQFP and QFP packages with a pitch (e) equal to or larger than 0.8 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
, SO, SOJsuitablesuitable
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
(at bottom version) can not be achieved, and as solder may stick to the heatsink (on top version).
The package footprint must incorporate solder thieves downstream and at the side corners.
it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.65 mm.
definitely not suitable for packages with a pitch (e) equal to or smaller than 0.5 mm.
Objective specificationThis data sheet contains target or goal specifications for product development.
Preliminary specificationThis data sheet contains preliminary data; supplementary data may be published later.
Product specificationThis 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 Sep 0112
Page 13
Philips SemiconductorsProduct specification
32-bit bus transceiver with direction pin;
5 V tolerant; 3-state
NOTES
74LVC32245A;
74LVCH32245A
1999 Sep 0113
Page 14
Philips SemiconductorsProduct specification
32-bit bus transceiver with direction pin;
5 V tolerant; 3-state
NOTES
74LVC32245A;
74LVCH32245A
1999 Sep 0114
Page 15
Philips SemiconductorsProduct specification
32-bit bus transceiver with direction pin;
5 V tolerant; 3-state
NOTES
74LVC32245A;
74LVCH32245A
1999 Sep 0115
Page 16
Philips Semiconductors – a w orldwide compan y
Argentina: see South America
Australia: 3 Figtree Drive, HOMEBUSH, NSW 2140,
United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409,
Tel. +1 800 234 7381, Fax. +1 800 943 0087
Uruguay: see South America
Vietnam: see Singapore
Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD,
Tel. +381 11 62 5344, Fax.+381 11 63 5777
For all other countries apply to: Philips Semiconductors,
International Marketing & Sales Communications, Building BE-p, P.O. Box 218,
5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825
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.
1999
Internet: http://www.semiconductors.philips.com
67
Printed in The Netherlands245004/01/pp16 Date of release: 1999 Sep 01Document order number: 9397 750 06259
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