The LCXZ16240 contains sixteen inverting buffers with 3-
STATE standard outputs. The device is nibble (4 bits) con-
trolled with each nibble functioning identically, but indepen-
dent of the other. The control pins may 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
www.fairchildsemi.com
2
Preliminary
74LCXZ16240
Absolute Maximum Ratings
(Note 1)
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
−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
±50
±100
±100
−65
to
+150
(Note 3)
Min
Operating
HIGH or LOW State
3-STATE or V
CC
=
OFF
I
OH
/I
OL
T
A
∆t/∆V
Output Current
Free-Air Operating Temperature
Input Edge Rate, V
IN
=
0.8V–2.0V, V
CC
=
3.0V
V
CC
=
3.0V
−
3.6V
V
CC
=
2.7V
−
3.0V
−40
0
2.7
0
0
0
Max
3.6
5.5
V
CC
5.5
±24
±12
85
10
Units
V
V
V
mA
°C
ns/V
Output in 3-STATE or V
CC
=
0–1.5V
Output in HIGH or LOW State (Note 2)
V
I
<
GND
V
O
<
GND
V
O
>
V
CC
Conditions
Units
V
V
V
mA
mA
mA
mA
mA
°C
Recommended Operating Conditions
Symbol
V
CC
V
I
V
O
Supply Voltage
Input Voltage
Output Voltage
Parameter
Note 1:
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 2:
I
O
Absolute Maximum Rating must be observed.
Note 3:
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
= −100 µA
I
OH
= −12
mA
I
OH
= −18
mA
I
OH
= −24
mA
V
OL
LOW Level Output Voltage
I
OL
=
100
µA
I
OL
=
12 mA
I
OL
=
16 mA
I
OL
=
24 mA
I
I
I
OZ
I
OFF
I
PU/PD
I
CC
∆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
0
≤
V
I
≤
5.5V
0
≤
V
O
≤
5.5V
V
I
=
V
IH
or V
IL
V
I
or V
O
=
5.5V
V
O
=
0.5V to V
CC
V
I
=
GND or V
CC
V
I
=
V
CC
or GND
3.6V
≤
V
I
, V
O
≤
5.5V (Note 4)
V
IH
=
V
CC
−0.6V
Note 4:
Outputs disabled or 3-STATE only.
Conditions
V
CC
(V)
2.7
−
3.6
2.7
−
3.6
2.7
−
3.6
2.7
3.0
3.0
2.7
−
3.6
2.7
3.0
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
T
A
= −40°C
to
+85°C
Min
2.0
0.8
V
CC
−
0.2
2.2
2.4
2.2
0.2
0.4
0.4
0.55
±5.0
±5.0
10
±5.0
225
±225
500
Max
Units
V
V
V
V
µA
µA
µA
µA
µA
µA
3
www.fairchildsemi.com
Preliminary
74LCXZ16240
AC Electrical Characteristics
T
A
= −40°C
to
+85°C,
R
L
=
500
Ω
Symbol
Parameter
V
CC
=
3.3V
±
0.3V
C
L
=
50 pF
Min
t
PHL
t
PLH
t
PZL
t
PZH
t
PLZ
t
PHZ
t
OSHL
t
OSLH
Output to Output Skew (Note 5)
Output Disable Time
Propagation Delay
Data to Output
Output Enable Time
1.5
1.5
1.5
1.5
1.5
1.5
Max
4.5
4.5
5.4
5.4
5.3
5.3
1.0
1.0
V
CC
=
2.7V
C
L
=
50 pF
Min
1.5
1.5
1.5
1.5
1.5
1.5
Max
5.3
5.3
6.0
6.0
5.4
5.4
ns
ns
ns
ns
Units
Note 5:
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
).
Dynamic Switching Characteristics
Symbol
V
OLP
V
OLV
Parameter
Quiet Output Dynamic Peak V
OL
Quiet Output Dynamic Valley V
OL
Conditions
C
L
=
50 pF, V
IH
=
3.3V, V
IL
=
0V
C
L
=
50 pF, V
IH
=
3.3V, V
IL
=
0V
V
CC
(V)
3.3
3.3
T
A
=
25°C
Typical
0.8
−0.8
V
V
Unit
Capacitance
Symbol
C
IN
C
OUT
C
PD
Input Capacitance
Output Capacitance
Power Dissipation Capacitance
Parameter
Conditions
V
CC
=
Open, V
I
=
0V or V
CC
V
CC
=
3.3V, V
I
=
0V or V
CC
V
CC
=
3.3V, V
I
=
0V or V
CC
, f
=
10 MHz
Typical
7
8
20
Units
pF
pF
pF
www.fairchildsemi.com
4
Preliminary
74LCXZ16240
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
V
CC
* 2 for V
CC
=
2.5V
C
L
50 pF
30 pF
Waveform for Inverting and Non-Inverting Functions
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