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© 2005 Fairchild Semiconductor Corporation DS01 1999 www.fairchildsemi.com
Februa ry 199 4
Revised May 2005
74LCX16240 Low Voltage 16-Bit Inverting Buffer /Line Driver with 5V Tolerant Inputs and Outputs
74LCX16240
Low Voltage 16-Bit Inverting Buffer/Line Driver
with 5V Tolerant Input s and Outputs
General Descript ion
The LCX16240 contains sixteen inverting buffers with
3-STATE outputs designed to be employed as a memory
and address driver, clock driver, or bus-oriented transmit-
ter/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 LCX16240 is designed fo r low voltage (2.5V or 3.3V)
VCC applicat ions w ith capacity of interfa cing to a 5V sig nal
environment.
The LCX16240 is fabricated with an advanced CMOS tech-
nology to achieve high speed operation while maintaining
CMOS low power dissipation.
Features
■5V tolerant inputs and outputs
■2.3V to 3.6V VCC specifications provided
■4.5 ns tPD max (VCC
3.3V), 20
P
A ICC max
■Power down high impedance inputs and outputs
■Supports live insertion/withdrawal (Note 1)
■
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
Note 1: To ensure the high-impedance state during power up or down, OE
should be tied to VCC throug h a pu ll-up res istor: the m inimu m value o r the
resistor is determined by the current-sourcing capability of the driver.
Ordering Code:
Devices also available in Tape and R eel. Sp ec if y by appending the suffix lett er “X” to the orde ring code.
Connection Diagram Logic Symbol
Pin Descriptions
GTO
¥
is a trademark of Fairchild Semiconductor Corporation.
Order Number Package Number Package Description
74LCX16240MEA MS48A 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300" Wide
74LCX16240MTD MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Pin Names Description
OEnOutput Enable Inputs (Active LOW)
I0–I15 Inputs
O0–O15 Outputs
■Implements proprietary noise/EMI reduction circuitry
www.fairchildsemi.com 2
74LCX16240
Truth Tables
H
HIGH Voltage Level
L
LOW Voltag e Level
X
Immaterial
Z
High Impedance
Functional Description
The LCX16240 contains sixteen inverting buffers with
3-STATE standard outputs. The device is nibble (4 bits)
cont rolled with each nibble funct ioning identica ll y, but inde-
pendent of the other. The control pins may be shorted
together to obtain full 16-bit operation. The 3-STATE out-
puts 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
impeda nce mode, b ut this does not interf ere with e ntering
new data into the inputs.
Logic Diagram
Inputs Outputs Inputs Outputs
OE1I0–I3O0–O3OE3I8–I11 O8–O11
LLH LLH
LHL LHL
HXZ HZZ
Inputs Outputs Inputs Outputs
OE2I4–I7O4–O7OE4I12–I15 O12–O15
LLH LLH
LHL LHL
HXZ HZZ
3 www.fairchildsemi.com
74LCX16240
Absolute Maxim um Ratings(Note 2)
Recommended Operating Conditions (Note 4)
Note 2: 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 para metric value s defined in the Elec trical Cha racteristic s tables are n ot guarantee d at the A bsolute Ma ximum R atings . The “Recom-
mended Operating Conditions” table will def i ne the conditions for actual device operation.
Note 3: IO Absolu te Maximu m Rating must be observed.
Note 4: Unused input s m ust be held HI GH or LOW. They may not f loat.
DC Electrical Characteristics
Symbol Parameter Value Conditions Units
VCC Supply Voltage
0.5 to
7.0 V
VIDC Input Voltage
0.5 to
7.0 V
VODC Output Volta ge
0.5 to
7.0 Output in 3-STATE V
0.5 to VCC
0.5 Output in HIGH or LOW State (Note 3)
IIK DC Input 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 Temperature
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 05.5V
VOOutput Voltage HIGH or LOW State 0 VCC V
3-STATE 0 5.5
IOH/IOL Output Curr en t VCC
3.0V
3.6V
r
24 mAVCC
2.7V
3.0V
r
12
VCC
2.3V
2.7V
r
8
TAFree-Air Operating Temperature
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 0.55
IIInput Leakage Current 0
d
VI
d
5.5V 2.3
3.6
r
5.0
P
A
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 VI or VO
5.5V 0 10
P
A
www.fairchildsemi.com 4
74LCX16240
DC Electrical Characteristics (Continued)
Note 5: Outputs disabled or 3-STATE onl y.
AC Electrical Characteristics
Note 6: Skew is defined as the absolute value o f t he difference between t he actual propagat ion delay fo r any two se parate outputs of the same device. The
specif ic ation appl ies t o any outputs switching in th e s ame direction, either HIGH-to-LOW (tOSHL) or LOW-to-H I GH (t OSLH).
Dynamic Switching Characteristics
Capacitance
Symbol Parameter Conditions VCC TA
40
q
C to
85
q
CUnits
(V) Min Max
ICC Quiescent Supply C urrent VI
VCC or GND 2.3
3.6 20
P
A
3.6V
d
VI, VO
d
5.5V (Note 5) 2.3
3.6
r
20
'
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
2.5
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 5.3 1.0 5.4 ns
tPLH Data to Output 1.0 4.5 1.0 5.3 1.0 5.4
tPZL Output Enable Time 1.0 5.4 1.0 6.0 1.0 7.0 ns
tPZH 1.05.41.06.01.07.0
tPLZ Output Disable Time 1.0 5.3 1.0 5.4 1.0 6.4 ns
tPHZ 1.05.31.05.41.06.4
tOSHL Output to Output Skew (Note 6) 1.0 ns
tOSLH 1.0
Symbol Parameter Conditions VCC TA
25
q
CUnit
(V) Typical
VOLP Quiet Output Dynamic Peak VOL CL
50 pF, VIH
3.3V, VIL
0V 3.3 0.8 V
CL
30pF, 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
30pF, VIH
2.5V, VIL
0V 2.5
0.6
Symbol Parameter Conditions Typical Units
CIN Input Capacitance 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 MHz 20 pF
5 www.fairchildsemi.com
74LCX16240
AC LOADING and WAVEFORMS Generic for LCX Family
FIGURE 1. AC Test Circuit (CL includes probe and jig capacitance)
Waveform for Inverting and Non-Inverting Functions
Propagation Delay. Pulse Width and trec Waveforms
3-STATE Output Low Enable and
Disable Times for Log ic
3-STATE Output High Ena ble and
Disable Times for Logic
Setup Time, Hold T ime and Recove ry Time for Logic
trise and tfall
FIGURE 2. Wav eforms
(Input Characteristics; f =1MHz, tr = tf = 3ns)
Test Switch
tPLH, tPHL Open
tPZL, tPLZ 6V at VCC
3.3
r
0.3V
VCC x 2 at VCC
2.5
r
0.2V
tPZH,tPHZ GND
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
www.fairchildsemi.com 6
74LCX16240
Schematic Diagram Generic for LCX Family
7 www.fairchildsemi.com
74LCX16240
Physical Dim ensions inches (millimeters) unless otherwise noted
48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300" Wide
Package Number MS48A
www.fairchildsemi.com 8
74LCX16240 Low Voltage 16-Bit Inverting Buffer/Li ne Driver with 5V Tolerant Inputs and Outputs
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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