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Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON
Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s
technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA
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© 2005 Fairchild Semiconductor Corporation DS500248 www.fairchildsemi.com
September 2000
Revised June 2005
74LCXH16244 Low Voltage 16- Bit Buffer/Line Drive r with Bushold
74LCXH16244
Low Voltage 16-Bit Buffer/Line Driver with Bushold
General Descript ion
The LCXH16244 contains sixteen non-inverting buffers
with 3-STA TE outputs designed to be employed as a mem-
ory and addre ss driver, clock driver, or bu s o riented trans-
mitter/receiver. The device is nibble controlled. Each nibble
has separate 3- S TAT E con tro l inpu ts which can be sh ort ed
together for full 16-bit operation.
The LCXH16244 data inputs include active bushold cir-
cuitry, eliminating the need for external pull-up resistors to
hold unused or floating data inputs at a valid logic level.
The LCXH16244 is designed for low voltage (2.5V or 3.3V)
VCC applications with capability of interfacing to a 5V signal
environment.
The LCXH16244 is fabricated with an advanced CMOS
technology to achieve high speed operation while maintain-
ing CMOS low power dissipation.
Features
■5V tolerant control inputs and outputs
■2.3V–3.6V VCC specifications provided
■4.5 ns tPD max (VCC
3.0V), 20
P
A ICC max
■Bushold on inputs eliminates the need for external
pull-up/pull-down resistors
■Power down high impedance inputs and outputs
■
r
24 mA output drive (VCC
3.0V)
■Latch-up per for man c e exce eds 500 mA
■ESD performa nce :
Human body model
!
2000V
Machine model
!
200V
■Also packaged in plastic Fine-Pitch Ball Grid Array
(FBGA)
Ordering Code:
Note 1: Ordering code “G” indicates Trays.
Note 2: Devices al so av ailable in Tape and Reel. Specify by appending t he suffix letter “X” to th e ordering co de.
Logic Symbol
Order Number Package Number Package Description
74LCXH16244G
(Note 1)(Note 2) BGA54A 54-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide
74LCXH16244MEA
(Note 2) MS48A 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300" Wide
74LCXH16244MTD
(Note 2) MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
■Implements proprietary noise/EMI reduction circuitry
www.fairchildsemi.com 2
74LCXH16244
Connection Diagrams
Pin Assignment for SSO P and TSSOP
Pin Assignment for FB GA
(Top Thru View)
Pin Descriptions
FBGA Pin Assignments
Truth Tables
H
HIGH Volt age Level X
Immaterial
L
LOW Voltage Le ve l Z
High Impedance
Pin Names Description
OEnOutput Enable Input (Active LOW)
I0–I15 Inputs
O0–O15 Outputs
NC No Connect
123456
AO0NC OE1OE2NC I0
BO2O1NC NC I1I2
CO4O3VCC VCC I3I4
DO6O5GND GND I5I6
EO8O7GND GND I7I8
FO10 O9GND GND I9I10
GO12 O11 VCC VCC I11 I12
HO14 O13 NC NC I13 I14
JO15 NC OE4OE3NC I15
Inputs Outputs
OE1I0–I3O0–O3
LL L
LH H
HX Z
Inputs Outputs
OE2I4–I7O4–O7
LL L
LH H
HX Z
Inputs Outputs
OE3I8–I11 O8–O11
LL L
LH H
HX Z
Inputs Outputs
OE4I12–I15 O12–O15
LL L
LH H
HX Z
3 www.fairchildsemi.com
74LCXH16244
Functional Description
The LCXH16244 contains sixteen non-inverting buffers
with 3-STATE standard outputs. The device is nibble
(4 bits) controlled with each nibble functioning identically,
but independent of the other. The control pins can be
shorted together to obtain full 16-bit operation. The
3-STATE outputs are controlled by an Output Enable (OEn)
input for each nibble. When OEn is LOW, the outputs are in
2-state mode. When OEn is HIGH, the outputs are in the
high impedance mode, but this does not interfere with
enteri ng new data into t he inpu ts.
Logic Diagram
www.fairchildsemi.com 4
74LCXH16244
Absolute Maximum Ratings(No t e 3)
Recommended Operating Conditions (Note 5)
Note 3: The Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated
at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the Absolute Maximum Ra tings. The “Recom-
mend ed Operat ing Conditions” table will def ine the condit ions for actual device op eration.
Note 4: IO Absolute Maximum Rating must be observed.
Note 5: Fl oating or unus ed control inputs mu s t be hel d H I GH or LOW.
DC Electrical Characteristics
Symbol Parameter Value Conditions Units
VCC Supply Voltage
0.5 to
7.0 V
VIDC Input Voltage OE
0.5 to
7.0 V
I0 - I15
0.5 to VCC
0.5
VODC Output Voltage
0.5 to
7.0 Output in 3-STAT E V
0.5 to VCC
0.5 Output in HIGH or LOW State (Note 4)
IIK DC In put Diode Current
50 VI
GND mA
IOK DC Output Diode Current
50 VO
GND mA
50 VO
!
VCC
IODC Output Source/Sink Current
r
50 mA
ICC DC Supply Current per Supply Pin
r
100 mA
IGND DC Ground Current per Ground Pin
r
100 mA
TSTG Storage Tempera ture
65 to
150
q
C
Symbol Parameter Min Max Units
VCC Supply Voltage Operating 2.0 3.6 V
Data Retention 1.5 3.6
VIInput Voltage 0V
CC V
VOOutput Voltage HIGH or LOW State 0 VCC V
3-STATE 0 5.5
IOH/IOL Output Current VCC
3.0V
3.6V
r
24 mAVCC
2.7V
3.0V
r
12
VCC
2.3V
2.7V
r
8
TAFree-Air Operating Temper ature
40 85
q
C
'
t/
'
V Input Edge Rate, VIN
0.8V–2.0V, VCC
3.0V 0 10 ns/V
Symbol Parameter Conditions VCC TA
40
q
C to
85
q
CUnits
(V) Min Max
VIH HIGH Level Input Voltage 2.3
2.7 1.7 V
2.7
3.6 2.0
VIL LOW Level Input Voltage 2.3
2.7 0.7 V
2.7
3.6 0.8
VOH HIGH Level Output Voltage IOH
100
P
A2.3
3.6 VCC
0.2
V
IOH
8 mA 2.3 1.8
IOH
12 mA 2.7 2.2
IOH
18 mA 3.0 2.4
IOH
24 mA 3.0 2.2
VOL LOW Level Output Voltage IOL
100
P
A2.3
3.6 0.2
V
IOL
8 mA 2.3 0.6
IOL
12 mA 2.7 0.4
IOL
16 mA 3.0 0.4
IOL
24 mA 3.0 0.5 5
IIInput Leakage Current Data VI
VCC or GND 2.3
3.6
r
5.0
P
A
Control 0
d
VI
d
5.5 2.3
3.6
r
5.0
5 www.fairchildsemi.com
74LCXH16244
DC Electrical Characteristics (Continued)
Note 6: An exte rnal driver must source at least the specified current to switch from LOW-to-HIGH.
Note 7: An external driver must s ink at least the spec if ied curren t to s w it c h f rom HIGH-to-LOW.
AC Electrical Characteristics
Note 8: S k ew is defined as the absolute v alue of the differenc e between t he actual propagation delay fo r any two s eparate outputs of the sam e device. The
specification applies to any outputs switching in the same direction, either HIGH-to-LOW (tOSHL) or LOW-to-HIGH (t OSLH). Pa r am eter guar anteed by de s ign.
Dynamic Switching Characteristics
Capacitance
Symbol Parameter Conditions VCC TA
40
q
C to
85
q
CUnits
(V) Min Max
II(HOLD) Bushold Input Minimum VIN
0.7V 2.3 45
P
A
Drive Hold Current VIN
1.7V
45
VIN
0.8V 3.0 75
VIN
2.0V
75
II(OD) Bushold Input Over-Drive (Note 6) 2.7 300
P
A
Current to Change State (Note 7)
300
(Note 6) 3.6 450
(Note 7)
450
IOZ 3-STATE Output Leakage 0
d
VO
d
5.5V 2.3
3.6
r
5.0
P
A
VI
VIH or VIL
IOFF Power-Off Leakage Current VO
5.5V 0 10
P
A
ICC Quiescent Supply Current VI
VCC or GND 2.3
3.6 20
P
A
'
ICC Increase in ICC per Input VIH
VCC
0.6V 2.3
3.6 500
P
A
Symbol Parameter
TA
40
q
C to
85
q
C, RL
500
:
Units
VCC
3.3V
r
0.3V VCC
2.7V VCC
2.5V
r
0.2V
CL
50 pF CL
50 pF CL
30 pF
Min Max Min Max Min Max
tPHL Propagation Delay 1.0 4.5 1.0 5.2 1.0 5.4 ns
tPLH Data to Output 1.0 4.5 1.0 5.2 1.0 5.4
tPZL Output Enable Time 1.0 5.5 1.0 6.3 1.0 7.2 ns
tPZH 1.0 5.5 1.0 6.3 1.0 7.2
tPLZ Output Disable Time 1.0 5.4 1.0 5.7 1.0 6.5 ns
tPHZ 1.0 5.4 1.0 5.7 1.0 6.5
tOSHL Output to Output Skew (Note 8) 1.0 ns
tOSLH 1.0
Symbol Parameter Conditions VCC TA
25
q
CUnits
(V) Typical
VOLP Quiet Output Dynamic Peak VOL CL
50 pF, VIH
3.3V, VIL
0V 3.3 0.8 V
CL
30 pF, VIH
2.5V, VIL
0V 2.5 0.6
VOLV Quiet Output Dynamic Valley VOL CL
50 pF, VIH
3.3V, VIL
0V 3.3
0.8 V
CL
30 pF, VIH
2.5V, VIL
0V 2.5
0.6
Symbol Parameter Conditions Typical Units
CIN Input Capacit ance VCC
Open, VI
0V or VCC 7pF
COUT Output Capacitance VCC
3.3V, VI
0V or VCC 8pF
CPD Power Dissipation Capacitance VCC
3.3V, VI
0V or VCC, f
10 M Hz 20 pF
www.fairchildsemi.com 6
74LCXH16244
AC LOADING and WAVEFORMS Generic for LCX Family
FIGURE 1. AC Test Circuit (CL includes probe and jig cap acitance)
Waveform for Inverting and Non-Inverting Functions
Propagation Delay. Pulse Width and trec Waveforms
3-STA TE Output Low Enable and
Disable Times for Logic
3-STATE Output High Enable and
Disable Times for Logic
Setup Time, Hold Time and Recovery Time for Logic
trise and tfall
FIGURE 2. Waveforms
(Input Characteristics; f =1MHz, tr = tf = 3n s)
VICL
6V for VCC
3.3V, 2.7V 50 pF
VCC * 2 for VCC
2.5V 30 pF
Symbol VCC
3.3V
r
0.3V 2.7V 2.5V
r
0.2V
Vmi 1.5V 1.5V VCC/2
Vmo 1.5V 1.5V VCC/2
VxVOL
0.3V VOL
0.3V VOL
0.15V
VyVOH
0.3V VOH
0.3V VOH
0.15V
7 www.fairchildsemi.com
74LCXH16244
Schematic Diagram Generic for LCXH Family
www.fairchildsemi.com 8
74LCXH16244
Physical Dimensions inches (millimeters) unless otherwise noted
54-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide
Packag e Num b er BGA5 4A
9 www.fairchildsemi.com
74LCXH16244
Physical Dim ensions inches (millimeters) unless otherwise noted (Continued)
48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300" Wide
Package Number MS48A
www.fairchildsemi.com 10
74LCXH16244 Low Voltage 16-Bit Buffer/Line Driver with Bushold
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Package Number MTD48
Fairchild does no t assume any responsibility for use of any circui try described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life suppor t de vices o r systems a re devices or syste ms
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical compon ent i n any compon ent of a lif e supp ort
device or system whose failure to perform can be rea-
sonabl y ex pect ed to cause the fa ilu re of the lif e su pp ort
device or system, or to affect it s safety or effectiveness.
www.fairchildsemi.com
www.onsemi.com
1
ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.
ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent
coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein.
ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards,
regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer
application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not
designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification
in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized
application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and
expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such
claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This
literature is subject to all applicable copyright laws and is not for resale in any manner.
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