• Low inductance multiple power and ground pins for
minimum noise and ground bounce
• Direct interface with TTL levels
• Bus hold on data inputs
• Typical output ground bounce voltage:
V
<0.8VatVCC= 3.3 V and T
OLP
amb
=25°C
• Typical output undershoot voltage:
V
>2VatVCC= 3.3 V and T
OHV
amb
=25°C
• Power off disables outputs, permitting live insertion
• Packaged in plastic fine-pitch ball grid array package.
DESCRIPTION
The 74LVCH32374A is a high-performance, low-power,
low-voltage, Si-gate CMOS device, superior to most
advanced CMOS compatible TTL families.
The inputs can be driven from either 3.3 or 5 V devices. In
3-state operation, the outputs can handle 5 V. These
features allow the use of these devices in a mixed
3.3 or 5 V environment.
The 74LVCH32374A is a 32-bit edge-triggered flip-flop
featuring separate D-type inputs for each flip-flop and
3-state outputs for bus oriented applications. The
74LVCH32374A consists of 4 sections of eight
edge-triggered flip-flops. A clock (nCP) input and an
output enable input (nOE) are provided per 8-bit section.
The flip-flops willstore the state of theirindividual D-inputs
that meet the set-up and hold time requirements on the
LOW-to-HIGH nCP transition.
When input nOE is LOW, the contents of the flip-flops are
available at the outputs. When input nOE is HIGH, the
outputs go tothe high-impedance OFF-state. Operation of
the nOE input does not affect the state of the flip-flops.
74LVCH32374A
The 74LVCH32374A bus hold data input circuitseliminate
the need for external pull-up resistors to hold unused
inputs.
QUICK REFERENCE DATA
GND = 0 V; T
=25°C; tr=tf≤2.5 ns
amb
SYMBOLPARAMETERCONDITIONSTYPICALUNIT
t
PHL/tPLH
f
max
C
I
C
PD
propagation delay nCP to nQ
n
maximum clock frequency150MHz
input capacitance5.0pF
power dissipation capacitance per
CL= 50 pF; VCC= 3.3 V3.8ns
VI= GND to VCC; note 130pF
buffer
Note
1. C
is used to determine the dynamic power dissipation (PDin µW).
PD
PD=CPD× V
2
× fi+ Σ (CL× V
CC
2
× fo) where:
CC
fi= input frequency in MHz;
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 Nov 242
Page 3
Philips SemiconductorsProduct specification
32-bit edge-triggered D-type flip-flop with
74LVCH32374A
5 V tolerant inputs/outputs; 3-state
FUNCTION TABLE
See note 1.
OPERATING MODE
Load and read registerL↑lLL
Load register and disable
outputs
Note
1. H = HIGH voltage level;
h = HIGH voltage level one set-up time prior to the HIGH-to-LOW CP transition;
L = LOW voltage level;
l = LOW voltage level one set-up time prior to the HIGH-to-LOW CP transition;
Z = high-impedance OFF-state;
↑ = LOW-to-HIGH CP transition.
OEnCPnD
n
L↑hHH
H↑lLZ
H↑hHZ
INPUTS
n
INTERNAL
FLIP-FLOPS
OUTPUTS
nQ
n
ORDERING INFORMATION
TYPE NUMBER
74LVCH32374AEC−40 to +85 °C96LFBGA96plasticSOT536-1
PINNING
SYMBOLDESCRIPTION
nD
n
nCPclock inputs
nQ
n
GNDground (0 V)
n
OEoutput enable inputs (active LOW)
V
CC
TEMPERATURE RANGEPINSPACKAGE MATERIALCODE
data inputs
flip-flop outputs
DC supply voltage
PACKAGE
1999 Nov 243
Page 4
Philips SemiconductorsProduct specification
32-bit edge-triggered D-type flip-flop with
5 V tolerant inputs/outputs; 3-state
handbook, full pagewidth
6
1D11D31D51D72D12D32D52D73D13D33D53D74D14D34D54D
5
1D01D21D41D62D02D22D42D63D03D23D43D64D04D24D44D
1CP2CP 3CPGNDGND GNDGND4CPV
4
1OE
32OE 3OEGNDGND GNDGND4OEV
1Q01Q21Q41Q62Q02Q22Q42Q63Q03Q23Q43Q64Q04Q24Q44Q
2
1Q11Q31Q51Q72Q12Q32Q52Q73Q13Q33Q53Q74Q14Q34Q54Q
1
AHJBDEGTCFKMNRLP
CC
CC
V
CC
V
CC
Fig.1 Pin configuration.
GNDGND GNDGNDV
GNDGND GNDGNDV
CC
CC
74LVCH32374A
MNA497
6
7
V
CC
V
CC
7
6
handbook, full pagewidth
1D
1CP
1OE
3D
3CP
3OE
0
0
DQ
CPCP
FF 1
to 7 other channels
DQ
CPCP
FF 17
to 7 other channels
1Q
3Q
2D
2CP
2OE
4D
4CP
4OE
0
0
0
0
DQ
FF 9
to 7 other channels
D
Q
FF 25
to 7 other channels
2Q
0
4Q
0
MNA498
Fig.2 Logic symbol.
1999 Nov 244
Page 5
Philips SemiconductorsProduct specification
32-bit edge-triggered D-type flip-flop with
5 V tolerant inputs/outputs; 3-state
data
input
V
CC
handbook, halfpage
74LVCH32374A
to internal circuit
MNA473
Fig.3 Bus hold circuit.
1999 Nov 245
Page 6
Philips SemiconductorsProduct specification
32-bit edge-triggered D-type flip-flop with
74LVCH32374A
5 V tolerant inputs/outputs; 3-state
RECOMMENDED OPERATING CONDITIONS
SYMBOLPARAMETERCONDITIONS
V
CC
DC supply voltagemaximum speed performance2.73.6V
low-voltage applications1.23.6V
V
I
V
O
DC input voltage05.5V
DC output voltageHIGH or LOW state0V
3-state05.5V
T
amb
operating ambient temperaturesee DC and AC characteristics per
device
t
(∆t/∆f) input rise and fall timesVCC= 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 voltageHIGH or LOW state; note 1−0.5VCC+ 0.5V
3-state; note 1−0.5+6.5V
I
O
I
, I
CC
T
stg
P
D
DC output source or sink currentVO=0toV
DC VCC or GND current−±100mA
GND
CC
−±50mA
storage temperature−65+150°C
power dissipation per packagetemperature range
−1000mW
−40 to +85 °C; note 2
LIMITS
MIN.MAX.
V
CC
−40+85°C
UNIT
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 Nov 246
Page 7
Philips SemiconductorsProduct specification
32-bit edge-triggered D-type flip-flop with
5 V tolerant inputs/outputs; 3-state
DC CHARACTERISTICS
Over recommended operating conditions; voltages are referenced to GND (ground=0V).
2. For bus hold parts the bus hold circuit is switched off when VI exceeds VCC allowing 5.5 V on the input terminal.
3. Valid for data inputs of bus hold parts (LVCH32-A) only.
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 VI level.
6. The specified overdrive current at the data input forces the data input to the opposite logic input level.
1999 Nov 247
Page 8
Philips SemiconductorsProduct specification
32-bit edge-triggered D-type flip-flop with
5 V tolerant inputs/outputs; 3-state
AC CHARACTERISTICS
GND = 0 V; tr=tf≤2.5 ns; CL= 50 pF; RL= 500 Ω.
SYMBOLPARAMETER
t
PHL/tPLH
t
PZH/tPZL
t
PHZ/tPLZ
t
W
t
su
t
h
f
max
propagation delay
nCP to nQ
n
3-state output enable time
nOE to nQ
n
3-state output disable time
nOE to nQ
n
nCP pulse width HIGHsee Figs 4 and 72.73.0−−ns
set-up time nDn to nCPsee Figs 5 and 72.72.0−−ns
hold time nDn to nCPsee Figs 5 and 72.71.5−−ns
maximum clock frequencysee Figs 4 and 72.780−−MHz
TEST CONDITIONST
WAVEFORMSVCC(V)MIN.TYP.
see Figs 4 and 72.71.5−6.4ns
see Figs 6 and 72.71.5−6.6ns
see Figs 6 and 72.71.5−6.5ns
74LVCH32374A
= −40 to +85 °C
amb
(1)
MAX.
3.0 to 3.61.53.85.4ns
3.0 to 3.61.53.65.6ns
3.0 to 3.61.53.95.5ns
3.0 to 3.63.01.5−ns
3.0 to 3.61.90.3−ns
3.0 to 3.6+1.1−0.3−ns
3.0 to 3.6100−−MHz
UNIT
Note
1. All typical values are measured at V
= 3.3 V and T
CC
AC WAVEFORMS
handbook, full pagewidth
V
I
nCP input
GND
V
OH
nQn output
V
OL
VM= 1.5 V at VCC≥ 2.7 V;
VM= 0.5 × VCCat VCC< 2.7 V.
VOL and VOH are typical output voltage drop that occur with the output load.
V
M
t
PHL
=25°C.
amb
1/f
max
V
M
t
W
t
PLH
V
M
MNA499
Fig.4 Clock (nCP) to output (nQn) propagation delays, the clock pulse width and the maximum clock frequency.
1999 Nov 248
Page 9
Philips SemiconductorsProduct specification
32-bit edge-triggered D-type flip-flop with
5 V tolerant inputs/outputs; 3-state
GND
GND
V
OH
V
OL
V
I
V
M
t
su
V
I
V
M
handbook, full pagewidth
nCP input
nDn input
nQn output
74LVCH32374A
t
su
t
h
V
M
t
h
MNA500
VM= 1.5 V at VCC≥ 2.7 V;
VM= 0.5 × VCCat VCC< 2.7 V.
VOL and VOH are typical output voltage drop that occur with the output load.
Fig.5 Set-up and hold times for inputs (nDn) to inputs (nCP).
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
t
PZL
V
M
V
X
t
PZH
V
Y
V
M
outputs
disabled
outputs
enabled
MNA478
VM= 1.5 V at VCC≥ 2.7 V;
VM= 0.5 × VCCat VCC< 2.7 V.
VX=VOL+ 0.3 V at VCC≥ 2.7 V;
VX=VOL+ 0.1 V at VCC< 2.7 V.
VY=VOH− 0.3VatVCC≥ 2.7 V;
VY=VOH− 0.1VatVCC< 2.7 V.
VOLand VOHare typical output voltage drop that occur with the output load.
Fig.6 3-state output enable and disable times.
1999 Nov 249
Page 10
Philips SemiconductorsProduct specification
32-bit edge-triggered D-type flip-flop with
5 V tolerant inputs/outputs; 3-state
handbook, full pagewidth
V
CC
V
CC
I
CC
R
T
V
D.U.T.
I
TESTS1
t
PLH/tPHL
t
PLZ/tPZL
t
PHZ/tPZH
open
2 × V
GND
CC
PULSE
GENERATOR
V
<2.7 VV
2.7 to 3.6 V 2.7 V
74LVCH32374A
S1
2 × V
CC
open
R
L
V
O
C
50 pF
Definitions for test circuit:
RL= load resistor.
CL= load capacitance including jig and probe capacitance.
RT= termination resistance should be equal to the output impedance Z
of the pulse generator.
500 Ω
R
L
L
500 Ω
GND
MNA479
o
Fig.7 Test circuitry for switching times.
1999 Nov 2410
Page 11
Philips SemiconductorsProduct specification
32-bit edge-triggered D-type flip-flop with
74LVCH32374A
5 V tolerant inputs/outputs; 3-state
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
1bA2
0.41
0.31
1.2
0.9
0.51
0.41
5.6
5.4
D
13.6
13.4
∅ 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 Nov 2411
EUROPEAN
PROJECTION
ISSUE DATE
98-11-25
99-06-03
Page 12
Philips SemiconductorsProduct specification
32-bit edge-triggered D-type flip-flop with
5 V tolerant inputs/outputs; 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.
74LVCH32374A
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 Nov 2412
Page 13
Philips SemiconductorsProduct specification
32-bit edge-triggered D-type flip-flop with
74LVCH32374A
5 V tolerant inputs/outputs; 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 Nov 2413
Page 14
Philips SemiconductorsProduct specification
32-bit edge-triggered D-type flip-flop with
5 V tolerant inputs/outputs; 3-state
NOTES
74LVCH32374A
1999 Nov 2414
Page 15
Philips SemiconductorsProduct specification
32-bit edge-triggered D-type flip-flop with
5 V tolerant inputs/outputs; 3-state
NOTES
74LVCH32374A
1999 Nov 2415
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
68
Printed in The Netherlands245004/01/pp16 Date of release: 1999 Nov 24Document order number: 9397 750 06467
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