Page 1
SEMICONDUCTOR TECHNICAL DATA
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The MC74LCX16373 is a high performance, non–inverting 16–bit
transparent latch operating from a 2.7 to 3.6V supply. The device is byte
controlled. Each byte has separate Output Enable and Latch Enable
inputs. These control pins 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
MC74LCX16373 inputs to be safely driven from 5V devices.
The MC74LCX16373 contains 16 D–type latches with 3–state
5V–tolerant outputs. When the Latch Enable (LEn) inputs are HIGH, data
on the Dn inputs enters the latches. In this condition, the latches are
transparent, i.e., a latch output will change state each time its D input
changes. When LE is LOW, the latches store the information that was
present on the D inputs a setup time preceding the HIGH–to–LOW
transition of LE. The 3–state outputs are controlled by the Output Enable
(OEn
) inputs. When OE is LOW, the outputs are enabled. When OE is
HIGH, the standard outputs are in the high impedance state, but this does
not interfere with new data entering into the latches.
• Designed for 2.7 to 3.6V V
• 5.4ns Maximum t
pd
• 5V T olerant — Interface Capability With 5V TTL Logic
• Supports Live Insertion and Withdrawal
• I
Specification Guarantees High Impedance When VCC = 0V
OFF
• 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
Operation
CC
LOW–VOLTAGE
CMOS 16–BIT
TRANSPARENT LATCH
PLASTIC TSSOP PACKAGE
PIN NAMES
Pins
OEn
LEn
D0–D15
O0–O15
DT SUFFIX
CASE 1201–01
Function
Output Enable Inputs
Latch Enable Inputs
Inputs
Outputs
11/96
Motorola, Inc. 1996
1
REV 1
Page 2
MC74LCX16373
V
CC
GND
V
CC
O15
LOGIC DIAGRAM
1
LE1OE1
481
D0O0
472
D1O1
463
GNDGND
454
D2O2
445
D3O3
436
V
427
CC
D4O4
418
D5O5
409
GND
3910
D6O6
3811
D7O7
3712
D8O8
3613
D9O9
3514
GNDGND
3415
D10O10
3316
D11O11
3217
V
3118
CC
D12O12
3019
D13O13
2920
GNDGND
2821
D14O14
2722
D15
2623
LE2OE2
2524
OE1
LE1
D0
D1
D2
D3
D4
D5
D6
D7
48
47
46
44
43
41
40
38
37
nLE
D
nLE
D
nLE
D
nLE
D
nLE
D
nLE
D
nLE
D
nLE
D
2
3
5
6
8
9
11
12
O0
O1
O2
O3
O4
O5
O6
O7
Q
Q
Q
Q
Q
Q
Q
Q
OE2
LE2
D8
D9
D10
D11
D12
D13
D14
D15
24
25
36
35
33
32
30
29
27
26
nLE
D
nLE
D
nLE
D
nLE
D
nLE
D
nLE
D
nLE
D
nLE
D
13
14
16
17
19
20
22
23
O8
O9
O10
O11
O12
O13
O14
O15
Q
Q
Q
Q
Q
Q
Q
Q
Inputs Outputs Inputs Outputs
LE1 OE1 D0:7 O0:7 LE2 OE2 D8:15 O8:15
X H X Z X H X Z
H L L L H L L L
H L H H H L H H
L L X O0 L L X O0
H = High V oltage Level; L = Low V oltage Level; Z = High Impedance State; X = High or Low Voltage Level and T ransitions Are Acceptable, for I
reasons, DO NOT FLOAT Inputs
MOTOROLA LCX DATA
2
BR1339 — REV 3
CC
Page 3
MC74LCX16373
ABSOLUTE MAXIMUM RATINGS*
Symbol Parameter Value Condition Unit
V
CC
V
I
V
O
I
IK
I
OK
I
O
I
CC
I
GND
T
STG
* 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
V
I
V
O
I
OH
I
OL
I
OH
I
OL
T
A
∆t/∆V Input Transition Rise or Fall Rate, VIN from 0.8V to 2.0V ,
DC Supply Voltage –0.5 to +7.0 V
DC Input Voltage –0.5 ≤ VI ≤ +7.0 V
DC Output Voltage –0.5 ≤ VO ≤ +7.0 Output in 3–State V
–0.5 ≤ VO ≤ VCC + 0.5 Note 1. V
DC Input Diode Current –50 VI < GND mA
DC Output Diode Current –50 VO < GND mA
+50 VO > V
DC Output Source/Sink Current ±50 mA
DC Supply Current Per Supply Pin ±100 mA
DC Ground Current Per Ground Pin ±100 mA
Storage Temperature Range –65 to +150 °C
Supply Voltage Operating
Data Retention Only
Input Voltage 0 5.5 V
Output Voltage (HIGH or LOW State)
(3–State)
HIGH Level Output Current, VCC = 3.0V – 3.6V –24 mA
LOW Level Output Current, VCC = 3.0V – 3.6V 24 mA
HIGH Level Output Current, VCC = 2.7V – 3.0V –12 mA
LOW Level Output Current, VCC = 2.7V – 3.0V 12 mA
Operating Free–Air Temperature –40 +85 °C
VCC = 3.0V
2.0
1.5
0
0
0 10 ns/V
3.3
3.3
CC
V
3.6
3.6
CC
5.5
mA
V
V
DC ELECTRICAL CHARACTERISTICS
TA = –40°C to +85°C
Symbol Characteristic Condition Min Max Unit
V
IH
V
IL
V
OH
V
OL
2. These values of VI are used to test DC electrical characteristics only.
LCX DATA
BR1339 — REV 3
HIGH Level Input Voltage (Note 2.) 2.7V ≤ VCC ≤ 3.6V 2.0 V
LOW Level Input Voltage (Note 2.) 2.7V ≤ VCC ≤ 3.6V 0.8 V
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
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
3 MOTOROLA
Page 4
MC74LCX16373
DC ELECTRICAL CHARACTERISTICS (continued)
TA = –40°C to +85°C
Symbol Characteristic Condition Min Max Unit
I
I
I
OZ
I
OFF
I
CC
∆I
CC
AC CHARACTERISTICS (tR = tF = 2.5ns; CL = 50pF; RL = 500Ω)
Symbol Parameter W aveform Min Max Min Max Unit
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
s
t
h
t
w
t
OSHL
t
OSLH
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
guaranteed by design.
Input Leakage Current 2.7V ≤ VCC ≤ 3.6V; 0V ≤ VI ≤ 5.5V ±5.0 µA
3–State Output Current 2.7 ≤ VCC ≤ 3.6V; 0V ≤ VO ≤ 5.5V;
Power–Off Leakage Current VCC = 0V; VI or VO = 5.5V 10 µA
Quiescent Supply Current
Increase in ICC per Input 2.7 ≤ VCC ≤ 3.6V; VIH = VCC – 0.6V 500 µA
Propagation Delay
Dn to O
n
Propagation Delay
LE to O
n
Output Enable Time to HIGH and
LOW Level
Output Disable Time from HIGH and
LOW Level
Setup TIme, HIGH or LOW Dn to LE 3 2.5 2.5 ns
Hold TIme, HIGH or LOW Dn to LE 3 1.5 1.5 ns
LE Pulse Width, HIGH 3 3.0 3.0 ns
Output–to–Output Skew
(Note 3.)
2.7 ≤ VCC ≤ 3.6V; VI = GND or V
2.7 ≤ VCC ≤ 3.6V; 3.6 ≤ VI or VO ≤ 5.5V ± 20 µA
1 1.5
3 1.5
2 1.5
2 1.5
VI = VIH or V
VCC = 3.0V to 3.6V VCC = 2.7V
1.5
1.5
1.5
1.5
IL
CC
Limits
TA = –40°C to +85°C
5.4
5.4
5.5
5.5
6.1
6.1
6.0
6.0
1.0
1.0
) or LOW–to–HIGH (t
OSHL
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
±5.0 µA
20 µA
5.9
5.9
6.4
6.4
6.5
6.5
6.3
6.3
); parameter
OSLH
ns
ns
ns
ns
ns
DYNAMIC SWITCHING CHARACTERISTICS
TA = +25°C
Symbol Characteristic Condition Min Typ Max Unit
V
OLP
V
OLV
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.
Dynamic LOW Peak Voltage (Note 4.) VCC = 3.3V, CL = 50pF, VIH = 3.3V, VIL = 0V 0.8 V
Dynamic LOW Valley Voltage (Note 4.) VCC = 3.3V, CL = 50pF, VIH = 3.3V, VIL = 0V 0.8 V
CAPACITIVE CHARACTERISTICS
Symbol Parameter Condition Typical Unit
C
IN
C
OUT
C
PD
MOTOROLA LCX DATA
Input Capacitance VCC = 3.3V, VI = 0V or V
Output Capacitance VCC = 3.3V, VI = 0V or V
Power Dissipation Capacitance 10MHz, VCC = 3.3V, VI = 0V or V
4
CC
CC
CC
7 pF
8 pF
20 pF
BR1339 — REV 3
Page 5
Dn
On
1.5V1.5V
t
PLH
1.5V 1.5V
WAVEFORM 1 – PROPAGATION DELAYS
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns
t
PHL
2.7V
0V
V
OH
V
OL
MC74LCX16373
OEn
On
On
1.5V
t
PZH
1.5V
t
PZL
1.5V
WAVEFORM 2 – OUTPUT ENABLE AND DISABLE TIMES
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns
t
PHZ
t
PLZ
1.5V
Figure 1. AC Waveforms
PULSE
GENERATOR
R
T
2.7V
0V
V
CC
VOH – 0.3V
≈
0V
≈
3.0V
VOL + 0.3V
GND
V
CC
DUT
2.7V
Dn
t
s
LEn
On
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns except when noted
1.5V
WAVEFORM 3 – LE to On PROPAGATION DELAYS, LE MINIMUM
PULSE WIDTH, Dn to LE SETUP AND HOLD TIMES
R
C
R
L
L
t
w
t
, t
PLH
PHL
1.5V
6V
1
OPEN
GND
1.5V
t
1.5V
0V
h
2.7V
0V
V
V
OH
OL
LCX DATA
BR1339 — REV 3
TEST SWITCH
t
, t
PLH
PHL
t
, t
PZL
PLZ
Open Collector/Drain t
t
, t
PZH
PHZ
CL = 50pF or equivalent (Includes jig and probe capacitance)
RL = R1 = 500Ω or equivalent
RT = Z
of pulse generator (typically 50Ω)
OUT
PLH
and t
PHL
Open
6V
6V
GND
Figure 2. T est Circuit
5 MOTOROLA
Page 6
MC74LCX16373
OUTLINE DIMENSIONS
0.076 (0.003)
–T–
SEATING
PLANE
S
U
M
0.254 (0.010) T
PIN 1
IDENT.
PLASTIC TSSOP PACKAGE
DT SUFFIX
CASE 1201–01
ISSUE A
K
48X REF
0.12 (0.005) V
M
S
U
T
S
J
2548
L
B
–U–
N
124
A
–V–
N
DETAIL E
D
C
DETAIL E
G
H
K
K1
J1
SECTION N–N
F
0.25 (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–.
DIM MIN MAX MIN MAX
A 12.40 12.60 0.488 0.496
B 6.00 6.20 0.236 0.244
M
–W–
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
____
INCHESMILLIMETERS
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
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 LCX DATA
6
◊
MC74LCX16373/D
BR1339 — REV 3
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