The LCXZ162244 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 (OE
n
)
input for each nibble. When OE
n
is LOW, the outputs are in
2-state mode. When OE
n
is HIGH, the outputs are in the
high impedance mode, but this does not interfere with
entering new data into the inputs.
Logic Diagram
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2
74LCXZ162244
Absolute Maximum Ratings
(Note 2)
Symbol
V
CC
V
I
V
O
I
IK
I
OK
I
O
I
CC
I
GND
T
STG
Parameter
Supply Voltage
DC Input Voltage
DC Output Voltage
DC Input Diode Current
DC Output Diode Current
DC Output Source/Sink Current
DC Supply Current per Supply Pin
DC Ground Current per Ground Pin
Storage Temperature
Value
Conditions
Units
V
V
Output in 3-STATE or V
CC
V
I
GND
V
O
GND
V
O
!
V
CC
0–1.5V
Output in HIGH or LOW State (Note 3)
V
mA
mA
mA
mA
mA
0.5 to
7.0
0.5 to
7.0
0.5 to
7.0
0.5 to V
CC
0.5
50
50
50
r
50
r
100
r
100
65 to
150
q
C
Recommended Operating Conditions
(Note 4)
Symbol
V
CC
V
I
V
O
I
OH
/I
OL
T
A
Supply Voltage
Input Voltage
Output Voltage
Output Current
Free-Air Operating Temperature
Input Edge Rate, V
IN
0.8V–2.0V, V
CC
3.0V
HIGH or LOW State
3-STATE
V
CC
V
CC
3.0V
3.6V
2.7V
3.0V
Parameter
Operating
Min
2.7
0
0
0
Max
3.6
5.5
V
CC
5.5
Units
V
V
V
mA
r
12
r
8
40
0
85
10
q
C
ns/V
'
t/
'
V
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 parametric values defined in the Electrical Characteristics tables are not guaranteed at the Absolute Maximum Ratings. The “Recom-
mended Operating Conditions” table will define the conditions for actual device operation.
Note 3:
I
O
Absolute Maximum Rating must be observed.
Note 4:
Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
Symbol
V
IH
V
IL
V
OH
Parameter
HIGH Level Input Voltage
LOW Level Input Voltage
HIGH Level Output Voltage
I
OH
I
OH
I
OH
I
OH
I
OH
V
OL
LOW Level Output Voltage
I
OL
I
OL
I
OL
I
OL
I
OL
I
I
I
OZ
I
OFF
I
PU/PD
I
CC
Input Leakage Current
3-STATE Output Leakage
Power-Off Leakage Current
Power Up/Down
3-STATE Output Current
Quiescent Supply Current
Increase in I
CC
per Input
Conditions
V
CC
(V)
2.7
3.6
2.7
3.6
T
A
40
q
C to
85
q
C
Max
Units
V
Min
2.0
0.8
V
CC
0.2
2.2
2.4
2.0
0.2
0.4
0.55
0.6
0.8
V
100
P
A
4 mA
6 mA
8 mA
12 mA
100
P
A
4 mA
6 mA
8 mA
12 mA
2.7
3.6
2.7
3.0
2.7
3.0
2.7
3.6
2.7
3.0
2.7
3.0
2.7
3.6
2.7
3.6
0
0
1.5
2.7
3.6
2.7
3.6
2.7
3.6
V
V
0
d
V
I
d
5.5V
0
d
V
O
d
5.5V
V
I
V
O
V
I
V
I
V
IH
V
IH
or V
IL
5.5V
0.5V to V
CC
GND or V
CC
V
CC
or GND
V
CC
0.6V
V
I
or V
O
r
5.0
r
5.0
10
P
A
P
A
P
A
P
A
P
A
P
A
r
5.0
225
3.6V
d
V
I
, V
O
d
5.5V (Note 5)
r
225
500
'
I
CC
3
www.fairchildsemi.com
74LCXZ162244
DC Electrical Characteristics
Note 5:
Outputs disabled or 3-STATE only.
(Continued)
AC Electrical Characteristics
T
A
Symbol
Parameter
V
CC
C
L
Min
t
PHL
t
PLH
t
PZL
t
PZH
t
PLZ
t
PHZ
t
OSHL
t
OSLH
Output to Output Skew (Note 6)
Output Disable Time
Propagation Delay
Data to Output
Output Enable Time
1.0
1.0
1.0
1.0
1.0
1.0
40
q
C to
85
q
C, R
L
50 pF
Max
5.3
5.3
6.3
6.3
5.4
5.4
1.0
1.0
C
L
Min
1.0
1.0
1.0
1.0
1.0
1.0
500
:
2.7V
50 pF
Max
6.0
6.0
7.1
7.1
5.7
5.7
ns
ns
ns
ns
Units
3.3V
r
0.3V
V
CC
Note 6:
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
Symbol
V
OLP
V
OLV
Parameter
Quiet Output Dynamic Peak V
OL
Quiet Output Dynamic Valley V
OL
C
L
C
L
50 pF, V
IH
50 pF, V
IH
Conditions
3.3V, V
IL
3.3V, V
IL
0V
0V
V
CC
(V)
3.3
3.3
T
A
25
q
C
0.8
Units
V
V
Typical
0.8
Capacitance
Symbol
C
IN
C
OUT
C
PD
Input Capacitance
Output Capacitance
Power Dissipation Capacitance
Parameter
V
CC
V
CC
V
CC
Open, V
I
3.3V, V
I
3.3V, V
I
Conditions
0V or V
CC
0V or V
CC
0V or V
CC
, f
10 MHz
Typical
7
8
20
Units
pF
pF
pF
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4
74LCXZ162244
AC LOADING and WAVEFORMS
Generic for LCX Family
FIGURE 1. AC Test Circuit (C
L
includes probe and jig capacitance)
V
I
6V for V
CC
3.3V, 2.7V
2.5V
V
CC
* 2 for V
CC
C
L
50 pF
30 pF
Waveform for Inverting and Non-Inverting Functions
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