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SEMICONDUCTOR TECHNICAL DATA
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The MC74LCX16240 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
MC74LCX16240 inputs to be safely driven from 5V devices. The
LCX16240 is suitable for memory address driving and all TTL level bus
oriented transceiver applications.
LOW–VOLTAGE
CMOS 16–BIT BUFFER
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 VCC Operation
5V Tolerant — Interface Capability With 5V TTL Logic
Supports Live Insertion and Withdrawal
DT SUFFIX
PLASTIC TSSOP PACKAGE
CASE 1201–01
IOFF Specification Guarantees High Impedance When VCC = 0V
LVTTL Compatible
LVCMOS Compatible
24mA Balanced Output Sink and Source Capability
Near Zero Static Supply Current in All Three Logic States (10µA)
Substantially Reduces System Power Requirements
• Latchup Performance Exceeds 500mA
• ESD Performance: Human Body Model >2000V; Machine Model >200V
The MC74LCX16240 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.
PIN NAMES
Pins
Function
OEn
D0–D15
O0–O15
Output Enable Inputs
Inputs
Outputs
This document contains information on a product under development. Motorola reserves the right to
change or discontinue this product without notice.
9/95
Motorola, Inc. 1995
1
REV 0.2
MC74LCX16240
OE1 1
48 OE2
O0 2
47 D0
O1 3
46 D1
GND 4
LOGIC DIAGRAM
45 GND
O2 5
44 D2
O3 6
43 D3
VCC 7
OE1
OE2
1
OE3
48
OE4
25
24
42 VCC
O4 8
41 D4
O5 9
40 D5
GND 10
D0:3
O0:3
D8:11
O8:11
D4:7
O4:7
D12:15
O12:15
39 GND
O6 11
38 D6
O7 12
37 D7
O8 13
36 D8
O9 14
35 D9
GND 15
34 GND
O10 16
33 D10
O11 17
32 D11
VCC 18
31 VCC
O12 19
30 D12
O13 20
29 D13
GND 21
28 GND
O14 22
27 D14
O15 23
26 D15
OE4 24
25 OE3
One of Four
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 Voltage Level; Z = High Impedance State; X = High or Low Voltage Level and Transitions Are Acceptable, for ICC
reasons, DO NOT FLOAT Inputs
MOTOROLA
2
LCX DATA
BR1339 — REV 2
MC74LCX16240
ABSOLUTE MAXIMUM RATINGS*
Symbol
Parameter
VCC
DC Supply Voltage
VI
DC Input Voltage
VO
DC Output Voltage
Value
Condition
Unit
–0.5 to +7.0
V
–0.5 ≤ VI ≤ +7.0
V
–0.5 ≤ VO ≤ +7.0
Output in 3–State
V
–0.5 ≤ VO ≤ VCC + 0.51
Output in HIGH or LOW State
V
IIK
DC Input Diode Current
–50
VI < GND
mA
IOK
DC Output Diode Current
–50
VO < GND
mA
+50
VO > VCC
mA
IO
DC Output Source/Sink Current
±50
mA
ICC
DC Supply Current Per Supply Pin
±100
mA
IGND
DC Ground Current Per Ground Pin
±100
mA
TSTG
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. IO absolute maximum rating must be observed.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Operating
Data Retention Only
Min
Typ
Max
Unit
2.0
1.5
3.3
3.3
3.6
3.6
V
0
5.5
V
0
0
VCC
5.5
V
VCC
Supply Voltage
VI
Input Voltage
VO
Output Voltage
IOH
HIGH Level Output Current, VCC = 3.0V – 3.6V
–24
mA
IOL
LOW Level Output Current, VCC = 3.0V – 3.6V
24
mA
IOH
HIGH Level Output Current, VCC = 2.7V – 3.0V
–12
mA
IOL
LOW Level Output Current, VCC = 2.7V – 3.0V
12
mA
TA
Operating Free–Air Temperature
∆t/∆V
Input Transition Rise or Fall Rate, VIN from 0.8V to 2.0V,
VCC = 3.0V
(HIGH or LOW State)
(3–State)
–40
+85
°C
0
10
ns/V
DC ELECTRICAL CHARACTERISTICS
TA = –40°C to +85°C
Symbol
Characteristic
VIH
HIGH Level Input Voltage (Note 1)
VIL
LOW Level Input Voltage (Note 1)
VOH
HIGH Level Output Voltage
VOL
LOW Level Output Voltage
Condition
Min
2.7V ≤ VCC ≤ 3.6V
2.0
2.7V ≤ VCC ≤ 3.6V
Max
V
0.8
2.7V ≤ VCC ≤ 3.6V; IOH = –100µA
VCC – 0.2
VCC = 2.7V; IOH = –12mA
2.2
VCC = 3.0V; IOH = –18mA
2.4
VCC = 3.0V; IOH = –24mA
2.2
Unit
V
V
2.7V ≤ VCC ≤ 3.6V; IOL = 100µA
0.2
VCC = 2.7V; IOL= 12mA
0.4
VCC = 3.0V; IOL = 16mA
0.4
V
VCC = 3.0V; IOL = 24mA
0.55
1. These values of VI are used to test DC electrical characteristics only. Functional test should use VIH ≥ 2.4V, VIL ≤ 0.5V.
LCX DATA
BR1339 — REV 2
3
MOTOROLA
MC74LCX16240
DC ELECTRICAL CHARACTERISTICS (continued)
TA = –40°C to +85°C
Symbol
Characteristic
Condition
Min
Max
Unit
II
Input Leakage Current
2.7V ≤ VCC ≤ 3.6V; 0V ≤ VI ≤ 5.5V
±5.0
µA
IOZ
3–State Output Current
2.7 ≤ VCC ≤ 3.6V; 0V ≤ VO ≤ 5.5V;
VI = VIH or V IL
±5.0
µA
IOFF
Power–Off Leakage Current
VCC = 0V; VI or VO = 5.5V
10
µA
ICC
Quiescent Supply Current
2.7 ≤ VCC ≤ 3.6V; VI = GND or VCC
20
µA
2.7 ≤ VCC ≤ 3.6V; 3.6 ≤ VI or VO ≤ 5.5V
±20
µA
2.7 ≤ VCC ≤ 3.6V; VIH = VCC – 0.6V
500
µA
∆ICC
Increase in ICC per Input
AC CHARACTERISTICS1 (tR = tF = 2.5ns; CL = 50pF; RL = 500Ω)
Limits
TA = –40°C to +85°C
VCC = 3.0V to 3.6V
Symbol
Parameter
VCC = 2.7V
Waveform
Min
Max
Max
Unit
tPLH
tPHL
Propagation Delay
Input to Output
1
1.5
1.5
4.5
4.5
5.3
5.3
ns
tPZH
tPZL
Output Enable Time to
High and Low Level
2
1.5
1.5
5.4
5.4
6.0
6.0
ns
tPHZ
tPLZ
Output Disable Time From
High and Low Level
2
1.5
1.5
5.3
5.3
5.4
5.4
ns
tOSHL
tOSLH
Output–to–Output Skew
(Note 2)
1.0
1.0
ns
1. These AC parameters are preliminary and may be modified prior to release.
2. 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 (tOSHL) or LOW–to–HIGH (tOSLH); parameter
guaranteed by design.
DYNAMIC SWITCHING CHARACTERISTICS
TA = +25°C
Symbol
Characteristic
Condition
Min
Typ
Max
Unit
VOLP
Dynamic LOW Peak Voltage1
VCC = 3.3V, CL = 50pF, VIH = 3.3V, VIL = 0V
0.8
V
VOLV
Dynamic LOW Valley Voltage1
VCC = 3.3V, CL = 50pF, VIH = 3.3V, VIL = 0V
0.8
V
1. 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
10MHz, VCC = 3.3V, VI = 0V or VCC
20
pF
CPD
Power Dissipation Capacitance
CIN
Input Capacitance
VCC = 3.3V, VI = 0V or VCC
7
pF
COUT
Output Capacitance
VCC = 3.3V, VI = 0V or VCC
8
pF
MOTOROLA
4
LCX DATA
BR1339 — REV 2
MC74LCX16240
2.7V
Dn
1.5V
1.5V
0V
tPHL
tPLH
VOH
1.5V
On
1.5V
VOL
WAVEFORM 1 – PROPAGATION DELAYS
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns
2.7V
1.5V
OEn
0V
tPZH
tPHZ
VCC
VOH – 0.3V
1.5V
On
≈ 0V
tPZL
tPLZ
≈ 3.0V
1.5V
On
VOL + 0.3V
GND
WAVEFORM 2 – OUTPUT ENABLE AND DISABLE TIMES
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns
Figure 1. AC Waveforms
VCC
PULSE
GENERATOR
R1
DUT
CL
RT
TEST
6V
OPEN
GND
RL
SWITCH
tPLH, tPHL
Open
tPZL, tPLZ
6V
Open Collector/Drain tPLH and tPHL
6V
tPZH, tPHZ
GND
CL = 50pF or equivalent (Includes jig and probe capacitance)
RL = R1 = 500Ω or equivalent
RT = ZOUT of pulse generator (typically 50Ω)
Figure 2. Test Circuit
LCX DATA
BR1339 — REV 2
5
MOTOROLA
MC74LCX16240
OUTLINE DIMENSIONS
DT SUFFIX
PLASTIC TSSOP PACKAGE
CASE 1201–01
ISSUE A
48X
K
K1
K REF
0.12 (0.005)
M
T U
S
V
ÉÉÉ
ÇÇÇ
ÇÇÇ
ÉÉÉ
S
T U
S
J J1
48
25
SECTION N–N
M
0.254 (0.010)
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 DATUM PLANE –W–.
B
–U–
L
N
1
24
A
–V–
PIN 1
IDENT.
N
F
DETAIL E
D
C
M
0.25 (0.010)
–W–
0.076 (0.003)
–T– SEATING
DETAIL E
PLANE
G
DIM
A
B
C
D
F
G
H
J
J1
K
K1
L
M
MILLIMETERS
MIN
MAX
12.40
12.60
6.00
6.20
–––
1.10
0.05
0.15
0.50
0.75
0.50 BSC
0.37
–––
0.09
0.20
0.09
0.16
0.17
0.27
0.17
0.23
7.95
8.25
0_
8_
INCHES
MIN
MAX
0.488
0.496
0.236
0.244
–––
0.043
0.002
0.006
0.020
0.030
0.0197 BSC
0.015
–––
0.004
0.008
0.004
0.006
0.007
0.011
0.007
0.009
0.313
0.325
0_
8_
H
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. “Typical” parameters can and do vary in different
applications. 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 Motorola was negligent regarding the design or manufacture of the part.
Motorola and
are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer.
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◊
MOTOROLA
CODELINE
6
*MC74LCX16240/D*
MC74LCX16240/D
LCX DATA
BR1339 — REV 2