Page 1
SEMICONDUCTOR TECHNICAL DATA
1
REV 0
Motorola, Inc. 1996
8/96
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The MC74LCX16240A is a high performance, inverting 16–bit buffer
operating from a 2.7 to 3.6V supply . The device is nibble controlled. Each
nibble has separate Output Enable inputs which can be tied together for
full 16–bit operation. High impedance TTL compatible inputs significantly
reduce current loading to input drivers while TTL compatible outputs offer
improved switching noise performance. A VI specification of 5.5V allows
MC74LCX16240A inputs to be safely driven from 5V devices. The
LCX16240A is suitable for memory address driving and all TTL level bus
oriented transceiver applications.
Current drive capability is 24mA at the outputs. The Output Enable
(OEn
) inputs, when HIGH, disable the outputs by placing them in a HIGH
Z condition.
• Designed for 2.7 to 3.6V V
CC
Operation
• 4.9ns Maximum t
pd
• 5V T olerant — Interface Capability With 5V TTL Logic
• Supports Live Insertion and Withdrawal
• I
OFF
Specification Guarantees High Impedance When VCC = 0V
• JEDEC Standard JESD–36 Compatible
• LVTTL Compatible
• LVCMOS Compatible
• 24mA Balanced Output Sink and Source Capability
• Near Zero Static Supply Current in All Three Logic States (20µA)
Substantially Reduces System Power Requirements
• Latchup Performance Exceeds 500mA
• ESD Performance: Human Body Model >2000V; Machine Model >200V
The MC74LCX16240A contains sixteen inverting buffers with 3–state
5V–tolerant outputs. The device is nibble controlled with each nibble
functioning identically, but independently. The control pins may be tied
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 on. When OEn
is HIGH, the outputs are in the high
impedance state.
LOW–VOLTAGE
CMOS 16–BIT BUFFER
DT SUFFIX
PLASTIC TSSOP PACKAGE
CASE 1201–01
PIN NAMES
Function
Output Enable Inputs
Inputs
Outputs
Pins
OEn
D0–D15
O0
–O15
Page 2
MC74LCX16240A
MOTOROLA LCX DATA
BR1339 — REV 3
2
LOGIC DIAGRAM
481
OE2
OE1
472
D0O0
463
D1O1
454
GNDGND
445
D2O2
436
D3O3
427
V
CC
V
CC
418
D4O4
409
D5O5
3910
GNDGND
3811
D6O6
3712
D7O7
3613
D8O8
3514
D9
O9
3415
GNDGND
3316
D10O10
3217
D11O11
3118
V
CC
V
CC
3019
D12O12
2920
D13O13
2821
GNDGND
2722
D14O14
2623
D15O15
2524
OE3
OE4
OE1
OE2
D0:3
D4:7
O0:3
O4:7
OE3
OE4
D8:11
D12:15
O8:11
O12:15
One of Four
1
48
25
24
OE1 D0:3 O0:3 OE2 D4:7 O4:7 OE3 D8:11 O8:11 OE4 D12:15 O12:15
L L H L L H L L H L L H
L H L L H L L H L L H L
H X Z H X Z H X Z H X Z
H = High Voltage Level; L = Low V oltage Level; Z = High Impedance State; X = High or Low Voltage Level and T ransitions Are Acceptable, for I
CC
reasons, DO NOT FLOAT Inputs
Page 3
MC74LCX16240A
LCX DATA
BR1339 — REV 3
3 MOTOROLA
ABSOLUTE MAXIMUM RATINGS*
Symbol Parameter Value Condition Unit
V
CC
DC Supply Voltage –0.5 to +7.0 V
V
I
DC Input Voltage –0.5 ≤ VI ≤ +7.0 V
V
O
DC Output Voltage –0.5 ≤ VO ≤ +7.0 Output in 3–State V
–0.5 ≤ VO ≤ VCC + 0.5 Note 1. V
I
IK
DC Input Diode Current –50 VI < GND mA
I
OK
DC Output Diode Current –50 VO < GND mA
+50 VO > V
CC
mA
I
O
DC Output Source/Sink Current ±50 mA
I
CC
DC Supply Current Per Supply Pin ±100 mA
I
GND
DC Ground Current Per Ground Pin ±100 mA
T
STG
Storage Temperature Range –65 to +150 °C
* Absolute maximum continuous ratings are those values beyond which damage to the device may occur . Exposure to these conditions or conditions
beyond those indicated may adversely affect device reliability. Functional operation under absolute–maximum–rated conditions is not implied.
1. Output in HIGH or LOW State. IO absolute maximum rating must be observed.
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Min Typ Max Unit
V
CC
Supply Voltage Operating
Data Retention Only
2.0
1.5
3.3
3.3
3.6
3.6
V
V
I
Input Voltage 0 5.5 V
V
O
Output Voltage (HIGH or LOW State)
(3–State)
0
0
V
CC
5.5
V
I
OH
HIGH Level Output Current, VCC = 3.0V – 3.6V –24 mA
I
OL
LOW Level Output Current, VCC = 3.0V – 3.6V 24 mA
I
OH
HIGH Level Output Current, VCC = 2.7V – 3.0V –12 mA
I
OL
LOW Level Output Current, VCC = 2.7V – 3.0V 12 mA
T
A
Operating Free–Air Temperature –40 +85 °C
∆t/∆V Input Transition Rise or Fall Rate, VIN from 0.8V to 2.0V ,
VCC = 3.0V
0 10 ns/V
DC ELECTRICAL CHARACTERISTICS
TA = –40°C to +85°C
Symbol Characteristic Condition Min Max Unit
V
IH
HIGH Level Input Voltage (Note 2.) 2.7V ≤ VCC ≤ 3.6V 2.0 V
V
IL
LOW Level Input Voltage (Note 2.) 2.7V ≤ VCC ≤ 3.6V 0.8 V
V
OH
HIGH Level Output Voltage 2.7V ≤ VCC ≤ 3.6V; IOH = –100µA VCC– 0.2 V
VCC = 2.7V; IOH = –12mA 2.2
VCC = 3.0V; IOH = –18mA 2.4
VCC = 3.0V; IOH = –24mA 2.2
V
OL
LOW Level Output Voltage 2.7V ≤ VCC ≤ 3.6V; IOL = 100µA 0.2 V
VCC = 2.7V; IOL= 12mA 0.4
VCC = 3.0V; IOL = 16mA 0.4
VCC = 3.0V; IOL = 24mA 0.55
2. These values of VI are used to test DC electrical characteristics only.
Page 4
MC74LCX16240A
MOTOROLA LCX DATA
BR1339 — REV 3
4
DC ELECTRICAL CHARACTERISTICS (continued)
TA = –40°C to +85°C
Symbol Characteristic Condition Min Max Unit
I
I
Input Leakage Current 2.7V ≤ VCC ≤ 3.6V; 0V ≤ VI ≤ 5.5V ±5.0 µA
I
OZ
3–State Output Current 2.7 ≤ VCC ≤ 3.6V; 0V ≤ VO ≤ 5.5V;
VI = VIH or V
IL
±5.0 µA
I
OFF
Power–Off Leakage Current VCC = 0V; VI or VO = 5.5V 10 µA
I
CC
Quiescent Supply Current
2.7 ≤ VCC ≤ 3.6V; VI = GND or V
CC
20 µA
2.7 ≤ VCC ≤ 3.6V; 3.6 ≤ VI or VO ≤ 5.5V ±20 µA
∆I
CC
Increase in ICC per Input 2.7 ≤ VCC ≤ 3.6V; VIH = VCC – 0.6V 500 µA
AC CHARACTERISTICS (tR = tF = 2.5ns; CL = 50pF; RL = 500Ω)
Limits
TA = –40°C to +85°C
VCC = 3.0V to 3.6V VCC = 2.7V
Symbol Parameter Waveform Min Max Max Unit
t
PLH
t
PHL
Propagation Delay
Input to Output
1 1.5
1.5
4.9
4.9
5.9
5.9
ns
t
PZH
t
PZL
Output Enable Time to
High and Low Level
2 1.5
1.5
6.5
6.5
7.5
7.5
ns
t
PHZ
t
PLZ
Output Disable Time From
High and Low Level
2 1.5
1.5
5.5
5.5
6.5
6.5
ns
t
OSHL
t
OSLH
Output–to–Output Skew
(Note 3.)
1.0
1.0
ns
3. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device.
The specification applies to any outputs switching in the same direction, either HIGH–to–LOW (t
OSHL
) or LOW–to–HIGH (t
OSLH
); parameter
guaranteed by design.
DYNAMIC SWITCHING CHARACTERISTICS
TA = +25°C
Symbol Characteristic Condition Min Typ Max Unit
V
OLP
Dynamic LOW Peak Voltage (Note 4.) VCC = 3.3V , CL = 50pF, VIH = 3.3V , VIL = 0V 0.8 V
V
OLV
Dynamic LOW Valley Voltage (Note 4.) VCC = 3.3V , CL = 50pF, VIH = 3.3V , VIL = 0V 0.8 V
4. Number of outputs defined as “n”. Measured with “n–1” outputs switching from HIGH–to–LOW or LOW–to–HIGH. The remaining output is
measured in the LOW state.
CAPACITIVE CHARACTERISTICS
Symbol Parameter Condition Typical Unit
C
IN
Input Capacitance VCC = 3.3V , VI = 0V or V
CC
7 pF
C
OUT
Output Capacitance VCC = 3.3V , VI = 0V or V
CC
8 pF
C
PD
Power Dissipation Capacitance 10MHz, VCC = 3.3V , VI = 0V or V
CC
20 pF
Page 5
MC74LCX16240A
LCX DATA
BR1339 — REV 3
5 MOTOROLA
WAVEFORM 1 – PROPAGATION DELAYS
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns
2.7V
0V
V
OH
V
OL
Dn
On
t
PLH
t
PHL
WAVEFORM 2 – OUTPUT ENABLE AND DISABLE TIMES
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns
2.7V
0V
≈
0V
OEn
On
t
PZH
≈
3.0V
t
PHZ
t
PZL
t
PLZ
On
1.5V
1.5V
1.5V1.5V
1.5V 1.5V
Figure 1. AC Waveforms
1.5V
V
CC
VOH – 0.3V
VOL + 0.3V
GND
OPEN
PULSE
GENERATOR
R
T
DUT
V
CC
R
L
R
1
C
L
6V
GND
TEST SWITCH
t
PLH
, t
PHL
Open
t
PZL
, t
PLZ
6V
Open Collector/Drain t
PLH
and t
PHL
6V
t
PZH
, t
PHZ
GND
CL = 50pF or equivalent (Includes jig and probe capacitance)
RL = R1 = 500Ω or equivalent
RT = Z
OUT
of pulse generator (typically 50Ω)
Figure 2. Test Circuit
Page 6
MC74LCX16240A
MOTOROLA LCX DATA
BR1339 — REV 3
6
OUTLINE DIMENSIONS
DT SUFFIX
PLASTIC TSSOP PACKAGE
CASE 1201–01
ISSUE A
S
U
M
0.12 (0.005) V
S
T
S
U
M
0.254 (0.010) T
–V–
B
A
L
K
–U–
48X REF
PIN 1
IDENT.
124
2548
0.076 (0.003)
SEATING
D
–T–
PLANE
DIM MIN MAX MIN MAX
INCHESMILLIMETERS
A 12.40 12.60 0.488 0.496
B 6.00 6.20 0.236 0.244
C ––– 1.10 ––– 0.043
D 0.05 0.15 0.002 0.006
F 0.50 0.75 0.020 0.030
G 0.50 BSC 0.0197 BSC
H 0.37 ––– 0.015 –––
J 0.09 0.20 0.004 0.008
J1 0.09 0.16 0.004 0.006
K 0.17 0.27 0.007 0.011
K1 0.17 0.23 0.007 0.009
L 7.95 8.25 0.313 0.325
M 0 8 0 8
____
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD FLASH, PROTRUSIONS OR GATE
BURRS. MOLD FLASH OR GATE BURRS
SHALL NOT EXCEED 0.15 (0.006) PER SIDE.
4. DIMENSION K DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.08 (0.003) TOTAL IN
EXCESS OF THE K DIMENSION AT MAXIMUM
MATERIAL CONDITION.
5. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
6. DIMENSIONS A AND B ARE TO BE
DETERMINED AT DA TUM PLANE –W–.
C
G
H
–W–
DETAIL E
J
K1
K
J1
SECTION N–N
M
0.25 (0.010)
F
DETAIL E
N
N
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty , representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola 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 consequential or incidental damages. “T ypical” parameters which may be provided in Motorola
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. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
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
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Opportunity/Affirmative Action Employer.
How to reach us:
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MC74LCX16240A/D
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