Unused bus terminals during HIGH Z State must be held HIGH or LOW.
T/R
L
H
X
Bus B
0
– B
7
Data to Bus A
0
– A
7
Bus A
0
– A
7
Data to Bus B
0
– B
7
HIGH Z State on A
0
– A
7
, B
0
– B
7
(Note 2)
Logic Diagram
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2
74LCXZ245
Absolute Maximum Ratings
(Note 3)
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
Output in HIGH or LOW State (Note 4)
V
I
GND
V
O
GND
V
O
!
V
CC
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 5)
Symbol
V
CC
V
I
V
O
I
OH
/I
OL
Supply Voltage
Input Voltage
Output Voltage
Output Current
HIGH or LOW State
3-STATE
V
CC
V
CC
V
CC
T
A
Free-Air Operating Temperature
Input Edge Rate, V
IN
0.8V
2.0V, V
CC
3.0V
3.0V
3.6V
2.7V - 3.0V
2.3V - 2.7V
Parameter
Operating
Min
2.7
0
0
0
Max
3.6
5.5
V
CC
5.5
Units
V
V
V
r
24
r
12
r
8
40
0
85
10
mA
q
C
ns/V
'
t/
'
V
Note 3:
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 4:
I
O
Absolute Maximum Rating must be observed.
Note 5:
Unused inputs or I/O pins 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
Input Leakage Current
3-STATE I/O Leakage
Power-Off Leakage Current
Power Up/ Power Down
3-STATE Output Current
Conditions
V
CC
(V)
2.3
2.7
2.7
3.6
2.3
2.7
2.7 - 3.6
T
A
40
q
C to
85
q
C
Max
Min
1.7
2.0
Units
V
0.7
0.8
V
CC
0.2
1.8
2.2
2.4
2.2
0.2
0.6
0.4
0.4
0.55
V
100
P
A
8 mA
12 mA
18 mA
24 mA
100
P
A
8mA
12 mA
16 mA
24 mA
2.3 - 3.6
2.3
2.7
3.0
3.0
2.3
3.6
2.3
2.7
3.0
3.0
2.3
3.6
2.3
3.6
0
0
1.5
V
V
0
d
V
I
d
5.5V
0
d
V
O
d
5.5V
V
I
V
O
V
I
V
IH
or V
IL
5.5V
to V
CC
V
CC
or GND
V
I
or V
O
r
5.0
r
5.0
10
P
A
P
A
P
A
P
A
r
5.0
3
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74LCXZ245
DC Electrical Characteristics
Symbol
I
CC
Parameter
Quiescent Supply Current
Increase in I
CC
per Input
V
I
V
IH
(Continued)
V
CC
(V)
V
CC
or GND
V
CC
0.6V
2.3
3.6
2.3
3.6
2.3
3.6
T
A
Conditions
40
q
C to
85
q
C
Max
225
Units
Min
3.6V
d
V
I
, V
O
d
5.5V (Note 6)
r
225
500
P
A
P
A
'
I
CC
Note 6:
Outputs disabled or 3-STATE only.
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 7)
Output Disable Time
Propagation Delay
A
n
to B
n
or B
n
to A
n
Output Enable Time
1.5
1.5
1.5
1.5
1.5
1.5
40
q
C to
85
q
C, R
L
50 pF
Max
7.0
7.0
8.5
8.5
7.5
7.5
1.0
1.0
C
L
Min
1.5
1.5
1.5
1.5
1.5
1.5
500
:
2.7V
50 pF
Max
8.0
8.0
9.5
9.5
8.5
8.5
ns
ns
ns
ns
Units
3.3V
r
0.3V
V
CC
Note 7:
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
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